[{"status":"public","article_processing_charge":"No","date_created":"2022-08-25T11:10:15Z","publication":"Nature Communications","title":"Dichloromethylation of enones by carbon nitride photocatalysis","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://doi.org/10.1038/s41467-020-15131-0","open_access":"1"}],"article_number":"1387","scopus_import":"1","extern":"1","publisher":"Springer Nature","date_published":"2020-03-13T00:00:00Z","abstract":[{"text":"Small organic radicals are ubiquitous intermediates in photocatalysis and are used in organic synthesis to install functional groups and to tune electronic properties and pharmacokinetic parameters of the final molecule. Development of new methods to generate small organic radicals with added functionality can further extend the utility of photocatalysis for synthetic needs. Herein, we present a method to generate dichloromethyl radicals from chloroform using a heterogeneous potassium poly(heptazine imide) (K-PHI) photocatalyst under visible light irradiation for C1-extension of the enone backbone. The method is applied on 15 enones, with γ,γ-dichloroketones yields of 18–89%. Due to negative zeta-potential (−40 mV) and small particle size (100 nm) K-PHI suspension is used in quasi-homogeneous flow-photoreactor increasing the productivity by 19 times compared to the batch approach. The resulting γ,γ-dichloroketones, are used as bifunctional building blocks to access value-added organic compounds such as substituted furans and pyrroles.","lang":"eng"}],"type":"journal_article","oa":1,"publication_status":"published","publication_identifier":{"eissn":["2041-1723"]},"author":[{"full_name":"Mazzanti, Stefano","last_name":"Mazzanti","first_name":"Stefano"},{"first_name":"Bogdan","last_name":"Kurpil","full_name":"Kurpil, Bogdan"},{"full_name":"Pieber, Bartholomäus","orcid":"0000-0001-8689-388X","last_name":"Pieber","first_name":"Bartholomäus","id":"93e5e5b2-0da6-11ed-8a41-af589a024726"},{"last_name":"Antonietti","full_name":"Antonietti, Markus","first_name":"Markus"},{"full_name":"Savateev, Aleksandr","last_name":"Savateev","first_name":"Aleksandr"}],"quality_controlled":"1","oa_version":"Published Version","doi":"10.1038/s41467-020-15131-0","volume":11,"month":"03","intvolume":"        11","_id":"11980","article_type":"original","year":"2020","citation":{"short":"S. Mazzanti, B. Kurpil, B. Pieber, M. Antonietti, A. Savateev, Nature Communications 11 (2020).","ista":"Mazzanti S, Kurpil B, Pieber B, Antonietti M, Savateev A. 2020. Dichloromethylation of enones by carbon nitride photocatalysis. Nature Communications. 11, 1387.","chicago":"Mazzanti, Stefano, Bogdan Kurpil, Bartholomäus Pieber, Markus Antonietti, and Aleksandr Savateev. “Dichloromethylation of Enones by Carbon Nitride Photocatalysis.” <i>Nature Communications</i>. Springer Nature, 2020. <a href=\"https://doi.org/10.1038/s41467-020-15131-0\">https://doi.org/10.1038/s41467-020-15131-0</a>.","ieee":"S. Mazzanti, B. Kurpil, B. Pieber, M. Antonietti, and A. Savateev, “Dichloromethylation of enones by carbon nitride photocatalysis,” <i>Nature Communications</i>, vol. 11. Springer Nature, 2020.","ama":"Mazzanti S, Kurpil B, Pieber B, Antonietti M, Savateev A. Dichloromethylation of enones by carbon nitride photocatalysis. <i>Nature Communications</i>. 2020;11. doi:<a href=\"https://doi.org/10.1038/s41467-020-15131-0\">10.1038/s41467-020-15131-0</a>","mla":"Mazzanti, Stefano, et al. “Dichloromethylation of Enones by Carbon Nitride Photocatalysis.” <i>Nature Communications</i>, vol. 11, 1387, Springer Nature, 2020, doi:<a href=\"https://doi.org/10.1038/s41467-020-15131-0\">10.1038/s41467-020-15131-0</a>.","apa":"Mazzanti, S., Kurpil, B., Pieber, B., Antonietti, M., &#38; Savateev, A. (2020). Dichloromethylation of enones by carbon nitride photocatalysis. <i>Nature Communications</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41467-020-15131-0\">https://doi.org/10.1038/s41467-020-15131-0</a>"},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","day":"13","date_updated":"2023-02-21T10:10:14Z"},{"language":[{"iso":"eng"}],"title":"An oscillatory plug flow photoreactor facilitates semi-heterogeneous dual nickel/carbon nitride photocatalytic C–N couplings","publication":"Reaction Chemistry and Engineering","date_created":"2022-08-25T11:45:02Z","article_processing_charge":"No","status":"public","page":"597-604","author":[{"last_name":"Rosso","full_name":"Rosso, Cristian","first_name":"Cristian"},{"last_name":"Gisbertz","full_name":"Gisbertz, Sebastian","first_name":"Sebastian"},{"first_name":"Jason D.","full_name":"Williams, Jason D.","last_name":"Williams"},{"first_name":"Hannes P. L.","full_name":"Gemoets, Hannes P. L.","last_name":"Gemoets"},{"first_name":"Wouter","last_name":"Debrouwer","full_name":"Debrouwer, Wouter"},{"id":"93e5e5b2-0da6-11ed-8a41-af589a024726","first_name":"Bartholomäus","full_name":"Pieber, Bartholomäus","orcid":"0000-0001-8689-388X","last_name":"Pieber"},{"first_name":"C. Oliver","full_name":"Kappe, C. Oliver","last_name":"Kappe"}],"publication_status":"published","publication_identifier":{"eissn":["2058-9883"]},"oa":1,"abstract":[{"lang":"eng","text":"Carbon nitride materials have emerged as an efficient and sustainable class of heterogeneous photocatalysts, particularly when paired with nickel in dual catalytic cross-coupling reactions. Performing these transformations on larger scales using a continuous process is difficult due to the problems associated with handling solids in flow. By combining an oscillatory pump with a microstructured plug flow photoreactor, a stable suspension of the photocatalyst can be maintained, circumventing clogging of the reactor channels. Through careful tuning of the oscillator properties, the residence time distribution (RTD) was optimized, whilst maintaining a stable catalyst suspension. Short residence times (20 min) were achieved using optimized conditions and the recyclability of the photocatalyst was demonstrated over 10 cycles with no loss of activity. During a stable 4.5 hour scale-out demonstration, the model substrate could be isolated on 12 g scale (90% yield, 2.67 g h−1). Moreover, the method was applied for the gram scale synthesis of an intermediate of the active pharmaceutical ingredient tetracaine."}],"type":"journal_article","date_published":"2020-03-01T00:00:00Z","scopus_import":"1","extern":"1","publisher":"Royal Society of Chemistry","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1039/D0RE00036A"}],"month":"03","volume":5,"doi":"10.1039/d0re00036a","oa_version":"Published Version","quality_controlled":"1","issue":"3","date_updated":"2024-10-14T12:06:11Z","day":"01","citation":{"ieee":"C. Rosso <i>et al.</i>, “An oscillatory plug flow photoreactor facilitates semi-heterogeneous dual nickel/carbon nitride photocatalytic C–N couplings,” <i>Reaction Chemistry and Engineering</i>, vol. 5, no. 3. Royal Society of Chemistry, pp. 597–604, 2020.","ama":"Rosso C, Gisbertz S, Williams JD, et al. An oscillatory plug flow photoreactor facilitates semi-heterogeneous dual nickel/carbon nitride photocatalytic C–N couplings. <i>Reaction Chemistry and Engineering</i>. 2020;5(3):597-604. doi:<a href=\"https://doi.org/10.1039/d0re00036a\">10.1039/d0re00036a</a>","ista":"Rosso C, Gisbertz S, Williams JD, Gemoets HPL, Debrouwer W, Pieber B, Kappe CO. 2020. An oscillatory plug flow photoreactor facilitates semi-heterogeneous dual nickel/carbon nitride photocatalytic C–N couplings. Reaction Chemistry and Engineering. 5(3), 597–604.","chicago":"Rosso, Cristian, Sebastian Gisbertz, Jason D. Williams, Hannes P. L. Gemoets, Wouter Debrouwer, Bartholomäus Pieber, and C. Oliver Kappe. “An Oscillatory Plug Flow Photoreactor Facilitates Semi-Heterogeneous Dual Nickel/Carbon Nitride Photocatalytic C–N Couplings.” <i>Reaction Chemistry and Engineering</i>. Royal Society of Chemistry, 2020. <a href=\"https://doi.org/10.1039/d0re00036a\">https://doi.org/10.1039/d0re00036a</a>.","short":"C. Rosso, S. Gisbertz, J.D. Williams, H.P.L. Gemoets, W. Debrouwer, B. Pieber, C.O. Kappe, Reaction Chemistry and Engineering 5 (2020) 597–604.","apa":"Rosso, C., Gisbertz, S., Williams, J. D., Gemoets, H. P. L., Debrouwer, W., Pieber, B., &#38; Kappe, C. O. (2020). An oscillatory plug flow photoreactor facilitates semi-heterogeneous dual nickel/carbon nitride photocatalytic C–N couplings. <i>Reaction Chemistry and Engineering</i>. Royal Society of Chemistry. <a href=\"https://doi.org/10.1039/d0re00036a\">https://doi.org/10.1039/d0re00036a</a>","mla":"Rosso, Cristian, et al. “An Oscillatory Plug Flow Photoreactor Facilitates Semi-Heterogeneous Dual Nickel/Carbon Nitride Photocatalytic C–N Couplings.” <i>Reaction Chemistry and Engineering</i>, vol. 5, no. 3, Royal Society of Chemistry, 2020, pp. 597–604, doi:<a href=\"https://doi.org/10.1039/d0re00036a\">10.1039/d0re00036a</a>."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"2020","article_type":"original","_id":"11986","intvolume":"         5"},{"month":"05","volume":117,"acknowledgement":"We would like to thank Scott Berry for help with ICU-GFP nuclear localization microscopy, Hao Yu and Lisha Shen for assistance with 6mA DNA methylation analysis, Donna Gibson for graphic design assistance, and members of the C.D. and Howard laboratories for helpful discussions. This work was funded by the European Research Council grants to “MEXTIM” (to C.D.) and “SexMeth” (to X. Feng), by the Biotechnological and Biological Sciences Research Council (BBSRC) Institute Strategic Programmes GRO (BB/J004588/1), GEN (BB/P013511/1), BBSRC grant (to X. Feng) (BB/S009620/1), and the Marie Sklodowska–Curie Postdoctoral Fellowships “UNRAVEL” (to R.H.B.) and \"WISDOM\" (to X. Fang). Additional funding via the Wellcome Trust through a Senior Research Fellowship (to J.R.) (103139) and a multiuser equipment grant (108504). The Wellcome Centre for Cell Biology is supported by core funding from the Wellcome Trust (203149).","doi":"10.1073/pnas.1920621117","quality_controlled":"1","oa_version":"Published Version","has_accepted_license":"1","issue":"28","day":"22","date_updated":"2023-05-08T10:53:55Z","keyword":["Multidisciplinary"],"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"citation":{"apa":"Bloomer, R. H., Hutchison, C. E., Bäurle, I., Walker, J., Fang, X., Perera, P., … Dean, C. (2020). The  Arabidopsis epigenetic regulator ICU11 as an accessory protein of polycomb repressive complex 2. <i>Proceedings of the National Academy of Sciences</i>. Proceedings of the National Academy of Sciences. <a href=\"https://doi.org/10.1073/pnas.1920621117\">https://doi.org/10.1073/pnas.1920621117</a>","mla":"Bloomer, Rebecca H., et al. “The  Arabidopsis Epigenetic Regulator ICU11 as an Accessory Protein of Polycomb Repressive Complex 2.” <i>Proceedings of the National Academy of Sciences</i>, vol. 117, no. 28, Proceedings of the National Academy of Sciences, 2020, pp. 16660–66, doi:<a href=\"https://doi.org/10.1073/pnas.1920621117\">10.1073/pnas.1920621117</a>.","ama":"Bloomer RH, Hutchison CE, Bäurle I, et al. The  Arabidopsis epigenetic regulator ICU11 as an accessory protein of polycomb repressive complex 2. <i>Proceedings of the National Academy of Sciences</i>. 2020;117(28):16660-16666. doi:<a href=\"https://doi.org/10.1073/pnas.1920621117\">10.1073/pnas.1920621117</a>","ieee":"R. H. Bloomer <i>et al.</i>, “The  Arabidopsis epigenetic regulator ICU11 as an accessory protein of polycomb repressive complex 2,” <i>Proceedings of the National Academy of Sciences</i>, vol. 117, no. 28. Proceedings of the National Academy of Sciences, pp. 16660–16666, 2020.","ista":"Bloomer RH, Hutchison CE, Bäurle I, Walker J, Fang X, Perera P, Velanis CN, Gümüs S, Spanos C, Rappsilber J, Feng X, Goodrich J, Dean C. 2020. The  Arabidopsis epigenetic regulator ICU11 as an accessory protein of polycomb repressive complex 2. Proceedings of the National Academy of Sciences. 117(28), 16660–16666.","chicago":"Bloomer, Rebecca H., Claire E. Hutchison, Isabel Bäurle, James Walker, Xiaofeng Fang, Pumi Perera, Christos N. Velanis, et al. “The  Arabidopsis Epigenetic Regulator ICU11 as an Accessory Protein of Polycomb Repressive Complex 2.” <i>Proceedings of the National Academy of Sciences</i>. Proceedings of the National Academy of Sciences, 2020. <a href=\"https://doi.org/10.1073/pnas.1920621117\">https://doi.org/10.1073/pnas.1920621117</a>.","short":"R.H. Bloomer, C.E. Hutchison, I. Bäurle, J. Walker, X. Fang, P. Perera, C.N. Velanis, S. Gümüs, C. Spanos, J. Rappsilber, X. Feng, J. Goodrich, C. Dean, Proceedings of the National Academy of Sciences 117 (2020) 16660–16666."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"2020","article_type":"original","_id":"12188","license":"https://creativecommons.org/licenses/by/4.0/","intvolume":"       117","language":[{"iso":"eng"}],"title":"The  Arabidopsis epigenetic regulator ICU11 as an accessory protein of polycomb repressive complex 2","publication":"Proceedings of the National Academy of Sciences","status":"public","pmid":1,"article_processing_charge":"No","date_created":"2023-01-16T09:15:44Z","page":"16660-16666","author":[{"last_name":"Bloomer","full_name":"Bloomer, Rebecca H.","first_name":"Rebecca H."},{"first_name":"Claire E.","full_name":"Hutchison, Claire E.","last_name":"Hutchison"},{"first_name":"Isabel","last_name":"Bäurle","full_name":"Bäurle, Isabel"},{"last_name":"Walker","full_name":"Walker, James","first_name":"James"},{"full_name":"Fang, Xiaofeng","last_name":"Fang","first_name":"Xiaofeng"},{"full_name":"Perera, Pumi","last_name":"Perera","first_name":"Pumi"},{"full_name":"Velanis, Christos N.","last_name":"Velanis","first_name":"Christos N."},{"last_name":"Gümüs","full_name":"Gümüs, Serin","first_name":"Serin"},{"last_name":"Spanos","full_name":"Spanos, Christos","first_name":"Christos"},{"first_name":"Juri","last_name":"Rappsilber","full_name":"Rappsilber, Juri"},{"first_name":"Xiaoqi","id":"e0164712-22ee-11ed-b12a-d80fcdf35958","full_name":"Feng, Xiaoqi","last_name":"Feng","orcid":"0000-0002-4008-1234"},{"full_name":"Goodrich, Justin","last_name":"Goodrich","first_name":"Justin"},{"first_name":"Caroline","full_name":"Dean, Caroline","last_name":"Dean"}],"oa":1,"file_date_updated":"2023-02-07T11:29:55Z","publication_identifier":{"issn":["0027-8424","1091-6490"]},"publication_status":"published","department":[{"_id":"XiFe"}],"ddc":["580"],"scopus_import":"1","extern":"1","publisher":"Proceedings of the National Academy of Sciences","type":"journal_article","abstract":[{"text":"Molecular mechanisms enabling the switching and maintenance of epigenetic states are not fully understood. Distinct histone modifications are often associated with ON/OFF epigenetic states, but how these states are stably maintained through DNA replication, yet in certain situations switch from one to another remains unclear. Here, we address this problem through identification of Arabidopsis INCURVATA11 (ICU11) as a Polycomb Repressive Complex 2 accessory protein. ICU11 robustly immunoprecipitated in vivo with PRC2 core components and the accessory proteins, EMBRYONIC FLOWER 1 (EMF1), LIKE HETEROCHROMATIN PROTEIN1 (LHP1), and TELOMERE_REPEAT_BINDING FACTORS (TRBs). ICU11 encodes a 2-oxoglutarate-dependent dioxygenase, an activity associated with histone demethylation in other organisms, and mutant plants show defects in multiple aspects of the Arabidopsis epigenome. To investigate its primary molecular function we identified the Arabidopsis FLOWERING LOCUS C (FLC) as a direct target and found icu11 disrupted the cold-induced, Polycomb-mediated silencing underlying vernalization. icu11 prevented reduction in H3K36me3 levels normally seen during the early cold phase, supporting a role for ICU11 in H3K36me3 demethylation. This was coincident with an attenuation of H3K27me3 at the internal nucleation site in FLC, and reduction in H3K27me3 levels across the body of the gene after plants were returned to the warm. Thus, ICU11 is required for the cold-induced epigenetic switching between the mutually exclusive chromatin states at FLC, from the active H3K36me3 state to the silenced H3K27me3 state. These data support the importance of physical coupling of histone modification activities to promote epigenetic switching between opposing chromatin states.","lang":"eng"}],"date_published":"2020-05-22T00:00:00Z","external_id":{"pmid":["32601198"]},"main_file_link":[{"url":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7368280/","open_access":"1"}],"file":[{"file_id":"12526","file_name":"2020_PNAS_Bloomer.pdf","access_level":"open_access","file_size":1105414,"relation":"main_file","date_created":"2023-02-07T11:29:55Z","creator":"alisjak","date_updated":"2023-02-07T11:29:55Z","success":1,"checksum":"cedee184cb12f454f2fba4158ff47db9","content_type":"application/pdf"}]},{"article_type":"original","year":"2020","_id":"12189","intvolume":"        16","keyword":["Cancer Research","Genetics (clinical)","Genetics","Molecular Biology","Ecology","Evolution","Behavior and Systematics"],"day":"29","date_updated":"2023-05-08T10:54:39Z","citation":{"short":"N. Christophorou, W. She, J. Long, A. Hurel, S. Beaubiat, Y. Idir, M. Tagliaro-Jahns, A. Chambon, V. Solier, D. Vezon, M. Grelon, X. Feng, N. Bouché, C. Mézard, PLOS Genetics 16 (2020).","ista":"Christophorou N, She W, Long J, Hurel A, Beaubiat S, Idir Y, Tagliaro-Jahns M, Chambon A, Solier V, Vezon D, Grelon M, Feng X, Bouché N, Mézard C. 2020. AXR1 affects DNA methylation independently of its role in regulating meiotic crossover localization. PLOS Genetics. 16(6), e1008894.","ieee":"N. Christophorou <i>et al.</i>, “AXR1 affects DNA methylation independently of its role in regulating meiotic crossover localization,” <i>PLOS Genetics</i>, vol. 16, no. 6. Public Library of Science (PLoS), 2020.","chicago":"Christophorou, Nicolas, Wenjing She, Jincheng Long, Aurélie Hurel, Sébastien Beaubiat, Yassir Idir, Marina Tagliaro-Jahns, et al. “AXR1 Affects DNA Methylation Independently of Its Role in Regulating Meiotic Crossover Localization.” <i>PLOS Genetics</i>. Public Library of Science (PLoS), 2020. <a href=\"https://doi.org/10.1371/journal.pgen.1008894\">https://doi.org/10.1371/journal.pgen.1008894</a>.","ama":"Christophorou N, She W, Long J, et al. AXR1 affects DNA methylation independently of its role in regulating meiotic crossover localization. <i>PLOS Genetics</i>. 2020;16(6). doi:<a href=\"https://doi.org/10.1371/journal.pgen.1008894\">10.1371/journal.pgen.1008894</a>","mla":"Christophorou, Nicolas, et al. “AXR1 Affects DNA Methylation Independently of Its Role in Regulating Meiotic Crossover Localization.” <i>PLOS Genetics</i>, vol. 16, no. 6, e1008894, Public Library of Science (PLoS), 2020, doi:<a href=\"https://doi.org/10.1371/journal.pgen.1008894\">10.1371/journal.pgen.1008894</a>.","apa":"Christophorou, N., She, W., Long, J., Hurel, A., Beaubiat, S., Idir, Y., … Mézard, C. (2020). AXR1 affects DNA methylation independently of its role in regulating meiotic crossover localization. <i>PLOS Genetics</i>. Public Library of Science (PLoS). <a href=\"https://doi.org/10.1371/journal.pgen.1008894\">https://doi.org/10.1371/journal.pgen.1008894</a>"},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","doi":"10.1371/journal.pgen.1008894","oa_version":"Published Version","quality_controlled":"1","issue":"6","month":"06","volume":16,"acknowledgement":"The authors wish to thank Cécile Raynaud, Eric Jenczewski, Rajeev Kumar, Raphaël Mercier and Jean Molinier for critical reading of the manuscript.","article_number":"e1008894","external_id":{"pmid":["32598340"]},"main_file_link":[{"url":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7351236/","open_access":"1"}],"author":[{"first_name":"Nicolas","full_name":"Christophorou, Nicolas","last_name":"Christophorou"},{"first_name":"Wenjing","last_name":"She","full_name":"She, Wenjing"},{"first_name":"Jincheng","full_name":"Long, Jincheng","last_name":"Long"},{"first_name":"Aurélie","full_name":"Hurel, Aurélie","last_name":"Hurel"},{"first_name":"Sébastien","last_name":"Beaubiat","full_name":"Beaubiat, Sébastien"},{"full_name":"Idir, Yassir","last_name":"Idir","first_name":"Yassir"},{"last_name":"Tagliaro-Jahns","full_name":"Tagliaro-Jahns, Marina","first_name":"Marina"},{"first_name":"Aurélie","last_name":"Chambon","full_name":"Chambon, Aurélie"},{"first_name":"Victor","last_name":"Solier","full_name":"Solier, Victor"},{"full_name":"Vezon, Daniel","last_name":"Vezon","first_name":"Daniel"},{"first_name":"Mathilde","full_name":"Grelon, Mathilde","last_name":"Grelon"},{"last_name":"Feng","orcid":"0000-0002-4008-1234","full_name":"Feng, Xiaoqi","id":"e0164712-22ee-11ed-b12a-d80fcdf35958","first_name":"Xiaoqi"},{"first_name":"Nicolas","last_name":"Bouché","full_name":"Bouché, Nicolas"},{"first_name":"Christine","last_name":"Mézard","full_name":"Mézard, Christine"}],"department":[{"_id":"XiFe"}],"publication_status":"published","publication_identifier":{"issn":["1553-7404"]},"oa":1,"date_published":"2020-06-29T00:00:00Z","type":"journal_article","abstract":[{"text":"Meiotic crossovers (COs) are important for reshuffling genetic information between homologous chromosomes and they are essential for their correct segregation. COs are unevenly distributed along chromosomes and the underlying mechanisms controlling CO localization are not well understood. We previously showed that meiotic COs are mis-localized in the absence of AXR1, an enzyme involved in the neddylation/rubylation protein modification pathway in Arabidopsis thaliana. Here, we report that in axr1-/-, male meiocytes show a strong defect in chromosome pairing whereas the formation of the telomere bouquet is not affected. COs are also redistributed towards subtelomeric chromosomal ends where they frequently form clusters, in contrast to large central regions depleted in recombination. The CO suppressed regions correlate with DNA hypermethylation of transposable elements (TEs) in the CHH context in axr1-/- meiocytes. Through examining somatic methylomes, we found axr1-/- affects DNA methylation in a plant, causing hypermethylation in all sequence contexts (CG, CHG and CHH) in TEs. Impairment of the main pathways involved in DNA methylation is epistatic over axr1-/- for DNA methylation in somatic cells but does not restore regular chromosome segregation during meiosis. Collectively, our findings reveal that the neddylation pathway not only regulates hormonal perception and CO distribution but is also, directly or indirectly, a major limiting pathway of TE DNA methylation in somatic cells.","lang":"eng"}],"extern":"1","publisher":"Public Library of Science (PLoS)","scopus_import":"1","title":"AXR1 affects DNA methylation independently of its role in regulating meiotic crossover localization","publication":"PLOS Genetics","article_processing_charge":"No","date_created":"2023-01-16T09:16:10Z","pmid":1,"status":"public","language":[{"iso":"eng"}]},{"publication":"Accounts of Chemical Research","title":"Molecular photoswitching in confined spaces","page":"2600-2610","status":"public","pmid":1,"article_processing_charge":"No","date_created":"2023-08-01T09:35:50Z","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://doi.org/10.1021/acs.accounts.0c00434","open_access":"1"}],"external_id":{"pmid":["32969638"]},"oa":1,"publication_status":"published","publication_identifier":{"eissn":["1520-4898"],"issn":["0001-4842"]},"author":[{"first_name":"Angela B.","last_name":"Grommet","full_name":"Grommet, Angela B."},{"first_name":"Lucia M.","full_name":"Lee, Lucia M.","last_name":"Lee"},{"full_name":"Klajn, Rafal","last_name":"Klajn","first_name":"Rafal","id":"8e84690e-1e48-11ed-a02b-a1e6fb8bb53b"}],"scopus_import":"1","publisher":"American Chemical Society","extern":"1","abstract":[{"lang":"eng","text":"In nature, light is harvested by photoactive proteins to drive a range of biological processes, including photosynthesis, phototaxis, vision, and ultimately life. Bacteriorhodopsin, for example, is a protein embedded within archaeal cell membranes that binds the chromophore retinal within its hydrophobic pocket. Exposure to light triggers regioselective photoisomerization of the confined retinal, which in turn initiates a cascade of conformational changes within the protein, triggering proton flux against the concentration gradient, providing the microorganisms with the energy to live. We are inspired by these functions in nature to harness light energy using synthetic photoswitches under confinement. Like retinal, synthetic photoswitches require some degree of conformational flexibility to isomerize. In nature, the conformational change associated with retinal isomerization is accommodated by the structural flexibility of the opsin host, yet it results in steric communication between the chromophore and the protein. Similarly, we strive to design systems wherein isomerization of confined photoswitches results in steric communication between a photoswitch and its confining environment. To achieve this aim, a balance must be struck between molecular crowding and conformational freedom under confinement: too much crowding prevents switching, whereas too much freedom resembles switching of isolated molecules in solution, preventing communication.\r\n\r\nIn this Account, we discuss five classes of synthetic light-switchable compounds—diarylethenes, anthracenes, azobenzenes, spiropyrans, and donor–acceptor Stenhouse adducts—comparing their behaviors under confinement and in solution. The environments employed to confine these photoswitches are diverse, ranging from planar surfaces to nanosized cavities within coordination cages, nanoporous frameworks, and nanoparticle aggregates. The trends that emerge are primarily dependent on the nature of the photoswitch and not on the material used for confinement. In general, we find that photoswitches requiring less conformational freedom for switching are, as expected, more straightforward to isomerize reversibly under confinement. Because these compounds undergo only small structural changes upon isomerization, however, switching does not propagate into communication with their environment. Conversely, photoswitches that require more conformational freedom are more challenging to switch under confinement but also can influence system-wide behavior.\r\n\r\nAlthough we are primarily interested in the effects of geometric constraints on photoswitching under confinement, additional effects inevitably emerge when a compound is removed from solution and placed within a new, more crowded environment. For instance, we have found that compounds that convert to zwitterionic isomers upon light irradiation often experience stabilization of these forms under confinement. This effect results from the mutual stabilization of zwitterions that are brought into close proximity on surfaces or within cavities. Furthermore, photoswitches can experience preorganization under confinement, influencing the selectivity and efficiency of their photoreactions. Because intermolecular interactions arising from confinement cannot be considered independently from the effects of geometric constraints, we describe all confinement effects concurrently throughout this Account."}],"date_published":"2020-11-17T00:00:00Z","type":"journal_article","quality_controlled":"1","oa_version":"Published Version","doi":"10.1021/acs.accounts.0c00434","issue":"11","volume":53,"month":"11","year":"2020","article_type":"original","intvolume":"        53","_id":"13361","date_updated":"2024-10-14T12:12:31Z","day":"17","keyword":["General Medicine","General Chemistry"],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"short":"A.B. Grommet, L.M. Lee, R. Klajn, Accounts of Chemical Research 53 (2020) 2600–2610.","ama":"Grommet AB, Lee LM, Klajn R. Molecular photoswitching in confined spaces. <i>Accounts of Chemical Research</i>. 2020;53(11):2600-2610. doi:<a href=\"https://doi.org/10.1021/acs.accounts.0c00434\">10.1021/acs.accounts.0c00434</a>","ieee":"A. B. Grommet, L. M. Lee, and R. Klajn, “Molecular photoswitching in confined spaces,” <i>Accounts of Chemical Research</i>, vol. 53, no. 11. American Chemical Society, pp. 2600–2610, 2020.","ista":"Grommet AB, Lee LM, Klajn R. 2020. Molecular photoswitching in confined spaces. Accounts of Chemical Research. 53(11), 2600–2610.","chicago":"Grommet, Angela B., Lucia M. Lee, and Rafal Klajn. “Molecular Photoswitching in Confined Spaces.” <i>Accounts of Chemical Research</i>. American Chemical Society, 2020. <a href=\"https://doi.org/10.1021/acs.accounts.0c00434\">https://doi.org/10.1021/acs.accounts.0c00434</a>.","mla":"Grommet, Angela B., et al. “Molecular Photoswitching in Confined Spaces.” <i>Accounts of Chemical Research</i>, vol. 53, no. 11, American Chemical Society, 2020, pp. 2600–10, doi:<a href=\"https://doi.org/10.1021/acs.accounts.0c00434\">10.1021/acs.accounts.0c00434</a>.","apa":"Grommet, A. B., Lee, L. M., &#38; Klajn, R. (2020). Molecular photoswitching in confined spaces. <i>Accounts of Chemical Research</i>. American Chemical Society. <a href=\"https://doi.org/10.1021/acs.accounts.0c00434\">https://doi.org/10.1021/acs.accounts.0c00434</a>"}},{"year":"2020","article_type":"original","_id":"13362","intvolume":"       142","day":"04","date_updated":"2024-10-14T12:12:41Z","keyword":["Colloid and Surface Chemistry","Biochemistry","General Chemistry","Catalysis"],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"short":"J. Gemen, J. Ahrens, L.J.W. Shimon, R. Klajn, Journal of the American Chemical Society 142 (2020) 17721–17729.","ieee":"J. Gemen, J. Ahrens, L. J. W. Shimon, and R. Klajn, “Modulating the optical properties of BODIPY dyes by noncovalent dimerization within a flexible coordination cage,” <i>Journal of the American Chemical Society</i>, vol. 142, no. 41. American Chemical Society, pp. 17721–17729, 2020.","ista":"Gemen J, Ahrens J, Shimon LJW, Klajn R. 2020. Modulating the optical properties of BODIPY dyes by noncovalent dimerization within a flexible coordination cage. Journal of the American Chemical Society. 142(41), 17721–17729.","ama":"Gemen J, Ahrens J, Shimon LJW, Klajn R. Modulating the optical properties of BODIPY dyes by noncovalent dimerization within a flexible coordination cage. <i>Journal of the American Chemical Society</i>. 2020;142(41):17721-17729. doi:<a href=\"https://doi.org/10.1021/jacs.0c08589\">10.1021/jacs.0c08589</a>","chicago":"Gemen, Julius, Johannes Ahrens, Linda J. W. Shimon, and Rafal Klajn. “Modulating the Optical Properties of BODIPY Dyes by Noncovalent Dimerization within a Flexible Coordination Cage.” <i>Journal of the American Chemical Society</i>. American Chemical Society, 2020. <a href=\"https://doi.org/10.1021/jacs.0c08589\">https://doi.org/10.1021/jacs.0c08589</a>.","mla":"Gemen, Julius, et al. “Modulating the Optical Properties of BODIPY Dyes by Noncovalent Dimerization within a Flexible Coordination Cage.” <i>Journal of the American Chemical Society</i>, vol. 142, no. 41, American Chemical Society, 2020, pp. 17721–29, doi:<a href=\"https://doi.org/10.1021/jacs.0c08589\">10.1021/jacs.0c08589</a>.","apa":"Gemen, J., Ahrens, J., Shimon, L. J. W., &#38; Klajn, R. (2020). Modulating the optical properties of BODIPY dyes by noncovalent dimerization within a flexible coordination cage. <i>Journal of the American Chemical Society</i>. American Chemical Society. <a href=\"https://doi.org/10.1021/jacs.0c08589\">https://doi.org/10.1021/jacs.0c08589</a>"},"doi":"10.1021/jacs.0c08589","quality_controlled":"1","oa_version":"Published Version","issue":"41","month":"10","volume":142,"external_id":{"pmid":["33006898"]},"main_file_link":[{"url":"https://doi.org/10.1021/jacs.0c08589","open_access":"1"}],"author":[{"last_name":"Gemen","full_name":"Gemen, Julius","first_name":"Julius"},{"last_name":"Ahrens","full_name":"Ahrens, Johannes","first_name":"Johannes"},{"full_name":"Shimon, Linda J. W.","last_name":"Shimon","first_name":"Linda J. W."},{"full_name":"Klajn, Rafal","last_name":"Klajn","id":"8e84690e-1e48-11ed-a02b-a1e6fb8bb53b","first_name":"Rafal"}],"oa":1,"publication_identifier":{"issn":["0002-7863"],"eissn":["1520-5126"]},"publication_status":"published","extern":"1","publisher":"American Chemical Society","scopus_import":"1","date_published":"2020-10-04T00:00:00Z","type":"journal_article","abstract":[{"lang":"eng","text":"Aggregation of organic molecules can drastically affect their physicochemical properties. For instance, the optical properties of BODIPY dyes are inherently related to the degree of aggregation and the mutual orientation of BODIPY units within these aggregates. Whereas the noncovalent aggregation of various BODIPY dyes has been studied in diverse media, the ill-defined nature of these aggregates has made it difficult to elucidate the structure–property relationships. Here, we studied the encapsulation of three structurally simple BODIPY derivatives within the hydrophobic cavity of a water-soluble, flexible PdII6L4 coordination cage. The cavity size allowed for the selective encapsulation of two dye molecules, irrespective of the substitution pattern on the BODIPY core. Working with a model, a pentamethyl-substituted derivative, we found that the mutual orientation of two BODIPY units in the cage’s cavity was remarkably similar to that in the crystalline state of the free dye, allowing us to isolate and characterize the smallest possible noncovalent H-type BODIPY aggregate, namely, an H-dimer. Interestingly, a CF3-substituted BODIPY, known for forming J-type aggregates, was also encapsulated as an H-dimer. Taking advantage of the dynamic nature of encapsulation, we developed a system in which reversible switching between H- and J-aggregates can be induced for multiple cycles simply by addition and subsequent destruction of the cage. We expect that the ability to rapidly and reversibly manipulate the optical properties of supramolecular inclusion complexes in aqueous media will open up avenues for developing detection systems that operate within biological environments."}],"title":"Modulating the optical properties of BODIPY dyes by noncovalent dimerization within a flexible coordination cage","publication":"Journal of the American Chemical Society","pmid":1,"status":"public","date_created":"2023-08-01T09:36:10Z","article_processing_charge":"No","page":"17721-17729","language":[{"iso":"eng"}]},{"issue":"37","doi":"10.1002/smll.202002135","quality_controlled":"1","oa_version":"Published Version","month":"08","volume":16,"_id":"13363","intvolume":"        16","year":"2020","article_type":"original","citation":{"ama":"Moreno S, Sharan P, Engelke J, et al. Light‐driven proton transfer for cyclic and temporal switching of enzymatic nanoreactors. <i>Small</i>. 2020;16(37). doi:<a href=\"https://doi.org/10.1002/smll.202002135\">10.1002/smll.202002135</a>","chicago":"Moreno, Silvia, Priyanka Sharan, Johanna Engelke, Hannes Gumz, Susanne Boye, Ulrich Oertel, Peng Wang, et al. “Light‐driven Proton Transfer for Cyclic and Temporal Switching of Enzymatic Nanoreactors.” <i>Small</i>. Wiley, 2020. <a href=\"https://doi.org/10.1002/smll.202002135\">https://doi.org/10.1002/smll.202002135</a>.","ista":"Moreno S, Sharan P, Engelke J, Gumz H, Boye S, Oertel U, Wang P, Banerjee S, Klajn R, Voit B, Lederer A, Appelhans D. 2020. Light‐driven proton transfer for cyclic and temporal switching of enzymatic nanoreactors. Small. 16(37), 2002135.","ieee":"S. Moreno <i>et al.</i>, “Light‐driven proton transfer for cyclic and temporal switching of enzymatic nanoreactors,” <i>Small</i>, vol. 16, no. 37. Wiley, 2020.","short":"S. Moreno, P. Sharan, J. Engelke, H. Gumz, S. Boye, U. Oertel, P. Wang, S. Banerjee, R. Klajn, B. Voit, A. Lederer, D. Appelhans, Small 16 (2020).","apa":"Moreno, S., Sharan, P., Engelke, J., Gumz, H., Boye, S., Oertel, U., … Appelhans, D. (2020). Light‐driven proton transfer for cyclic and temporal switching of enzymatic nanoreactors. <i>Small</i>. Wiley. <a href=\"https://doi.org/10.1002/smll.202002135\">https://doi.org/10.1002/smll.202002135</a>","mla":"Moreno, Silvia, et al. “Light‐driven Proton Transfer for Cyclic and Temporal Switching of Enzymatic Nanoreactors.” <i>Small</i>, vol. 16, no. 37, 2002135, Wiley, 2020, doi:<a href=\"https://doi.org/10.1002/smll.202002135\">10.1002/smll.202002135</a>."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","day":"11","date_updated":"2023-08-07T10:11:41Z","keyword":["Biomaterials","Biotechnology","General Materials Science","General Chemistry"],"status":"public","pmid":1,"article_processing_charge":"No","date_created":"2023-08-01T09:36:48Z","title":"Light‐driven proton transfer for cyclic and temporal switching of enzymatic nanoreactors","publication":"Small","language":[{"iso":"eng"}],"external_id":{"pmid":["32783385"]},"article_number":"2002135","main_file_link":[{"url":"https://doi.org/10.1002/smll.202002135","open_access":"1"}],"publisher":"Wiley","scopus_import":"1","extern":"1","type":"journal_article","abstract":[{"lang":"eng","text":"Temporal activation of biological processes by visible light and subsequent return to an inactive state in the absence of light is an essential characteristic of photoreceptor cells. Inspired by these phenomena, light-responsive materials are very attractive due to the high spatiotemporal control of light irradiation, with light being able to precisely orchestrate processes repeatedly over many cycles. Herein, it is reported that light-driven proton transfer triggered by a merocyanine-based photoacid can be used to modulate the permeability of pH-responsive polymersomes through cyclic, temporally controlled protonation and deprotonation of the polymersome membrane. The membranes can undergo repeated light-driven swelling–contraction cycles without losing functional effectiveness. When applied to enzyme loaded-nanoreactors, this membrane responsiveness is used for the reversible control of enzymatic reactions. This combination of the merocyanine-based photoacid and pH-switchable nanoreactors results in rapidly responding and versatile supramolecular systems successfully used to switch enzymatic reactions ON and OFF on demand."}],"date_published":"2020-08-11T00:00:00Z","author":[{"first_name":"Silvia","full_name":"Moreno, Silvia","last_name":"Moreno"},{"last_name":"Sharan","full_name":"Sharan, Priyanka","first_name":"Priyanka"},{"full_name":"Engelke, Johanna","last_name":"Engelke","first_name":"Johanna"},{"full_name":"Gumz, Hannes","last_name":"Gumz","first_name":"Hannes"},{"last_name":"Boye","full_name":"Boye, Susanne","first_name":"Susanne"},{"last_name":"Oertel","full_name":"Oertel, Ulrich","first_name":"Ulrich"},{"first_name":"Peng","full_name":"Wang, Peng","last_name":"Wang"},{"last_name":"Banerjee","full_name":"Banerjee, Susanta","first_name":"Susanta"},{"last_name":"Klajn","full_name":"Klajn, Rafal","first_name":"Rafal","id":"8e84690e-1e48-11ed-a02b-a1e6fb8bb53b"},{"last_name":"Voit","full_name":"Voit, Brigitte","first_name":"Brigitte"},{"first_name":"Albena","last_name":"Lederer","full_name":"Lederer, Albena"},{"first_name":"Dietmar","last_name":"Appelhans","full_name":"Appelhans, Dietmar"}],"oa":1,"publication_status":"published","publication_identifier":{"issn":["1613-6810"],"eissn":["1613-6829"]}},{"oa":1,"publication_status":"published","publication_identifier":{"eissn":["1520-5126"],"issn":["0002-7863"]},"author":[{"first_name":"Martina","last_name":"Canton","full_name":"Canton, Martina"},{"full_name":"Grommet, Angela B.","last_name":"Grommet","first_name":"Angela B."},{"first_name":"Luca","last_name":"Pesce","full_name":"Pesce, Luca"},{"first_name":"Julius","last_name":"Gemen","full_name":"Gemen, Julius"},{"full_name":"Li, Shiming","last_name":"Li","first_name":"Shiming"},{"first_name":"Yael","last_name":"Diskin-Posner","full_name":"Diskin-Posner, Yael"},{"first_name":"Alberto","full_name":"Credi, Alberto","last_name":"Credi"},{"last_name":"Pavan","full_name":"Pavan, Giovanni M.","first_name":"Giovanni M."},{"full_name":"Andréasson, Joakim","last_name":"Andréasson","first_name":"Joakim"},{"last_name":"Klajn","full_name":"Klajn, Rafal","first_name":"Rafal","id":"8e84690e-1e48-11ed-a02b-a1e6fb8bb53b"}],"scopus_import":"1","publisher":"American Chemical Society","extern":"1","date_published":"2020-08-14T00:00:00Z","abstract":[{"text":"Photochromic molecules undergo reversible isomerization upon irradiation with light at different wavelengths, a process that can alter their physical and chemical properties. For instance, dihydropyrene (DHP) is a deep-colored compound that isomerizes to light-brown cyclophanediene (CPD) upon irradiation with visible light. CPD can then isomerize back to DHP upon irradiation with UV light or thermally in the dark. Conversion between DHP and CPD is thought to proceed via a biradical intermediate; bimolecular events involving this unstable intermediate thus result in rapid decomposition and poor cycling performance. Here, we show that the reversible isomerization of DHP can be stabilized upon confinement within a PdII6L4 coordination cage. By protecting this reactive intermediate using the cage, each isomerization reaction proceeds to higher yield, which significantly decreases the fatigue experienced by the system upon repeated photocycling. Although molecular confinement is known to help stabilize reactive species, this effect is not typically employed to protect reactive intermediates and thus improve reaction yields. We envisage that performing reactions under confinement will not only improve the cyclic performance of photochromic molecules, but may also increase the amount of product obtainable from traditionally low-yielding organic reactions.","lang":"eng"}],"type":"journal_article","main_file_link":[{"url":"https://doi.org/10.1021/jacs.0c06146","open_access":"1"}],"external_id":{"pmid":["32791832"]},"language":[{"iso":"eng"}],"publication":"Journal of the American Chemical Society","title":"Improving fatigue resistance of dihydropyrene by encapsulation within a coordination cage","page":"14557-14565","status":"public","pmid":1,"article_processing_charge":"No","date_created":"2023-08-01T09:36:59Z","date_updated":"2023-08-07T10:15:38Z","day":"14","keyword":["Colloid and Surface Chemistry","Biochemistry","General Chemistry","Catalysis"],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"mla":"Canton, Martina, et al. “Improving Fatigue Resistance of Dihydropyrene by Encapsulation within a Coordination Cage.” <i>Journal of the American Chemical Society</i>, vol. 142, no. 34, American Chemical Society, 2020, pp. 14557–65, doi:<a href=\"https://doi.org/10.1021/jacs.0c06146\">10.1021/jacs.0c06146</a>.","apa":"Canton, M., Grommet, A. B., Pesce, L., Gemen, J., Li, S., Diskin-Posner, Y., … Klajn, R. (2020). Improving fatigue resistance of dihydropyrene by encapsulation within a coordination cage. <i>Journal of the American Chemical Society</i>. American Chemical Society. <a href=\"https://doi.org/10.1021/jacs.0c06146\">https://doi.org/10.1021/jacs.0c06146</a>","short":"M. Canton, A.B. Grommet, L. Pesce, J. Gemen, S. Li, Y. Diskin-Posner, A. Credi, G.M. Pavan, J. Andréasson, R. Klajn, Journal of the American Chemical Society 142 (2020) 14557–14565.","chicago":"Canton, Martina, Angela B. Grommet, Luca Pesce, Julius Gemen, Shiming Li, Yael Diskin-Posner, Alberto Credi, Giovanni M. Pavan, Joakim Andréasson, and Rafal Klajn. “Improving Fatigue Resistance of Dihydropyrene by Encapsulation within a Coordination Cage.” <i>Journal of the American Chemical Society</i>. American Chemical Society, 2020. <a href=\"https://doi.org/10.1021/jacs.0c06146\">https://doi.org/10.1021/jacs.0c06146</a>.","ista":"Canton M, Grommet AB, Pesce L, Gemen J, Li S, Diskin-Posner Y, Credi A, Pavan GM, Andréasson J, Klajn R. 2020. Improving fatigue resistance of dihydropyrene by encapsulation within a coordination cage. Journal of the American Chemical Society. 142(34), 14557–14565.","ama":"Canton M, Grommet AB, Pesce L, et al. Improving fatigue resistance of dihydropyrene by encapsulation within a coordination cage. <i>Journal of the American Chemical Society</i>. 2020;142(34):14557-14565. doi:<a href=\"https://doi.org/10.1021/jacs.0c06146\">10.1021/jacs.0c06146</a>","ieee":"M. Canton <i>et al.</i>, “Improving fatigue resistance of dihydropyrene by encapsulation within a coordination cage,” <i>Journal of the American Chemical Society</i>, vol. 142, no. 34. American Chemical Society, pp. 14557–14565, 2020."},"year":"2020","article_type":"original","intvolume":"       142","_id":"13364","volume":142,"month":"08","quality_controlled":"1","oa_version":"Published Version","doi":"10.1021/jacs.0c06146","issue":"34"},{"issue":"21","oa_version":"Published Version","quality_controlled":"1","doi":"10.1021/jacs.0c03444","volume":142,"month":"04","intvolume":"       142","_id":"13365","year":"2020","article_type":"original","citation":{"short":"L. Pesce, C. Perego, A.B. Grommet, R. Klajn, G.M. Pavan, Journal of the American Chemical Society 142 (2020) 9792–9802.","ieee":"L. Pesce, C. Perego, A. B. Grommet, R. Klajn, and G. M. Pavan, “Molecular factors controlling the isomerization of Azobenzenes in the cavity of a flexible coordination cage,” <i>Journal of the American Chemical Society</i>, vol. 142, no. 21. American Chemical Society, pp. 9792–9802, 2020.","chicago":"Pesce, Luca, Claudio Perego, Angela B. Grommet, Rafal Klajn, and Giovanni M. Pavan. “Molecular Factors Controlling the Isomerization of Azobenzenes in the Cavity of a Flexible Coordination Cage.” <i>Journal of the American Chemical Society</i>. American Chemical Society, 2020. <a href=\"https://doi.org/10.1021/jacs.0c03444\">https://doi.org/10.1021/jacs.0c03444</a>.","ama":"Pesce L, Perego C, Grommet AB, Klajn R, Pavan GM. Molecular factors controlling the isomerization of Azobenzenes in the cavity of a flexible coordination cage. <i>Journal of the American Chemical Society</i>. 2020;142(21):9792-9802. doi:<a href=\"https://doi.org/10.1021/jacs.0c03444\">10.1021/jacs.0c03444</a>","ista":"Pesce L, Perego C, Grommet AB, Klajn R, Pavan GM. 2020. Molecular factors controlling the isomerization of Azobenzenes in the cavity of a flexible coordination cage. Journal of the American Chemical Society. 142(21), 9792–9802.","mla":"Pesce, Luca, et al. “Molecular Factors Controlling the Isomerization of Azobenzenes in the Cavity of a Flexible Coordination Cage.” <i>Journal of the American Chemical Society</i>, vol. 142, no. 21, American Chemical Society, 2020, pp. 9792–802, doi:<a href=\"https://doi.org/10.1021/jacs.0c03444\">10.1021/jacs.0c03444</a>.","apa":"Pesce, L., Perego, C., Grommet, A. B., Klajn, R., &#38; Pavan, G. M. (2020). Molecular factors controlling the isomerization of Azobenzenes in the cavity of a flexible coordination cage. <i>Journal of the American Chemical Society</i>. American Chemical Society. <a href=\"https://doi.org/10.1021/jacs.0c03444\">https://doi.org/10.1021/jacs.0c03444</a>"},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","keyword":["Colloid and Surface Chemistry","Biochemistry","General Chemistry","Catalysis"],"date_updated":"2023-08-07T10:18:53Z","day":"30","page":"9792-9802","article_processing_charge":"No","date_created":"2023-08-01T09:37:12Z","status":"public","pmid":1,"publication":"Journal of the American Chemical Society","title":"Molecular factors controlling the isomerization of Azobenzenes in the cavity of a flexible coordination cage","language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":"https://doi.org/10.1021/jacs.0c03444"}],"external_id":{"pmid":["32353237"]},"date_published":"2020-04-30T00:00:00Z","type":"journal_article","abstract":[{"text":"Photoswitchable molecules are employed for many applications, from the development of active materials to the design of stimuli-responsive molecular systems and light-powered molecular machines. To fully exploit their potential, we must learn ways to control the mechanism and kinetics of their photoinduced isomerization. One possible strategy involves confinement of photoresponsive switches such as azobenzenes or spiropyrans within crowded molecular environments, which may allow control over their light-induced conversion. However, the molecular factors that influence and control the switching process under realistic conditions and within dynamic molecular regimes often remain difficult to ascertain. As a case study, here we have employed molecular models to probe the isomerization of azobenzene guests within a Pd(II)-based coordination cage host in water. Atomistic molecular dynamics and metadynamics simulations allow us to characterize the flexibility of the cage in the solvent, the (rare) guest encapsulation and release events, and the relative probability/kinetics of light-induced isomerization of azobenzene analogues in these host–guest systems. In this way, we can reconstruct the mechanism of azobenzene switching inside the cage cavity and explore key molecular factors that may control this event. We obtain a molecular-level insight on the effects of crowding and host–guest interactions on azobenzene isomerization. The detailed picture elucidated by this study may enable the rational design of photoswitchable systems whose reactivity can be controlled via host–guest interactions.","lang":"eng"}],"extern":"1","publisher":"American Chemical Society","scopus_import":"1","publication_status":"published","publication_identifier":{"eissn":["1520-5126"],"issn":["0002-7863"]},"oa":1,"author":[{"last_name":"Pesce","full_name":"Pesce, Luca","first_name":"Luca"},{"full_name":"Perego, Claudio","last_name":"Perego","first_name":"Claudio"},{"last_name":"Grommet","full_name":"Grommet, Angela B.","first_name":"Angela B."},{"full_name":"Klajn, Rafal","last_name":"Klajn","first_name":"Rafal","id":"8e84690e-1e48-11ed-a02b-a1e6fb8bb53b"},{"last_name":"Pavan","full_name":"Pavan, Giovanni M.","first_name":"Giovanni M."}]},{"doi":"10.1038/s41565-020-0652-2","oa_version":"None","quality_controlled":"1","month":"04","volume":15,"year":"2020","article_type":"original","_id":"13367","intvolume":"        15","keyword":["Electrical and Electronic Engineering","Condensed Matter Physics","General Materials Science","Biomedical Engineering","Atomic and Molecular Physics","and Optics","Bioengineering"],"date_updated":"2024-10-14T12:13:35Z","day":"17","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"chicago":"Grommet, Angela B., Moran Feller, and Rafal Klajn. “Chemical Reactivity under Nanoconfinement.” <i>Nature Nanotechnology</i>. Springer Nature, 2020. <a href=\"https://doi.org/10.1038/s41565-020-0652-2\">https://doi.org/10.1038/s41565-020-0652-2</a>.","ama":"Grommet AB, Feller M, Klajn R. Chemical reactivity under nanoconfinement. <i>Nature Nanotechnology</i>. 2020;15:256-271. doi:<a href=\"https://doi.org/10.1038/s41565-020-0652-2\">10.1038/s41565-020-0652-2</a>","ieee":"A. B. Grommet, M. Feller, and R. Klajn, “Chemical reactivity under nanoconfinement,” <i>Nature Nanotechnology</i>, vol. 15. Springer Nature, pp. 256–271, 2020.","ista":"Grommet AB, Feller M, Klajn R. 2020. Chemical reactivity under nanoconfinement. Nature Nanotechnology. 15, 256–271.","short":"A.B. Grommet, M. Feller, R. Klajn, Nature Nanotechnology 15 (2020) 256–271.","apa":"Grommet, A. B., Feller, M., &#38; Klajn, R. (2020). Chemical reactivity under nanoconfinement. <i>Nature Nanotechnology</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41565-020-0652-2\">https://doi.org/10.1038/s41565-020-0652-2</a>","mla":"Grommet, Angela B., et al. “Chemical Reactivity under Nanoconfinement.” <i>Nature Nanotechnology</i>, vol. 15, Springer Nature, 2020, pp. 256–71, doi:<a href=\"https://doi.org/10.1038/s41565-020-0652-2\">10.1038/s41565-020-0652-2</a>."},"title":"Chemical reactivity under nanoconfinement","publication":"Nature Nanotechnology","date_created":"2023-08-01T09:37:39Z","article_processing_charge":"No","pmid":1,"status":"public","page":"256-271","language":[{"iso":"eng"}],"external_id":{"pmid":["32303705"]},"author":[{"last_name":"Grommet","full_name":"Grommet, Angela B.","first_name":"Angela B."},{"first_name":"Moran","last_name":"Feller","full_name":"Feller, Moran"},{"full_name":"Klajn, Rafal","last_name":"Klajn","first_name":"Rafal","id":"8e84690e-1e48-11ed-a02b-a1e6fb8bb53b"}],"publication_identifier":{"issn":["1748-3387"],"eissn":["1748-3395"]},"publication_status":"published","date_published":"2020-04-17T00:00:00Z","abstract":[{"text":"Confining molecules can fundamentally change their chemical and physical properties. Confinement effects are considered instrumental at various stages of the origins of life, and life continues to rely on layers of compartmentalization to maintain an out-of-equilibrium state and efficiently synthesize complex biomolecules under mild conditions. As interest in synthetic confined systems grows, we are realizing that the principles governing reactivity under confinement are the same in abiological systems as they are in nature. In this Review, we categorize the ways in which nanoconfinement effects impact chemical reactivity in synthetic systems. Under nanoconfinement, chemical properties can be modulated to increase reaction rates, enhance selectivity and stabilize reactive species. Confinement effects also lead to changes in physical properties. The fluorescence of light emitters, the colours of dyes and electronic communication between electroactive species can all be tuned under confinement. Within each of these categories, we elucidate design principles and strategies that are widely applicable across a range of confined systems, specifically highlighting examples of different nanocompartments that influence reactivity in similar ways.","lang":"eng"}],"type":"journal_article","scopus_import":"1","extern":"1","publisher":"Springer Nature"},{"oa_version":"Preprint","quality_controlled":"1","doi":"10.1039/c9nr08578e","issue":"5","volume":12,"month":"01","year":"2020","article_type":"original","intvolume":"        12","_id":"13368","keyword":["General Materials Science"],"date_updated":"2023-08-07T10:32:15Z","day":"10","citation":{"apa":"Anahory, Y., Naren, H. R., Lachman, E. O., Buhbut Sinai, S., Uri, A., Embon, L., … Zeldov, E. (2020). SQUID-on-tip with single-electron spin sensitivity for high-field and ultra-low temperature nanomagnetic imaging. <i>Nanoscale</i>. Royal Society of Chemistry. <a href=\"https://doi.org/10.1039/c9nr08578e\">https://doi.org/10.1039/c9nr08578e</a>","mla":"Anahory, Y., et al. “SQUID-on-Tip with Single-Electron Spin Sensitivity for High-Field and Ultra-Low Temperature Nanomagnetic Imaging.” <i>Nanoscale</i>, vol. 12, no. 5, Royal Society of Chemistry, 2020, pp. 3174–82, doi:<a href=\"https://doi.org/10.1039/c9nr08578e\">10.1039/c9nr08578e</a>.","ista":"Anahory Y, Naren HR, Lachman EO, Buhbut Sinai S, Uri A, Embon L, Yaakobi E, Myasoedov Y, Huber ME, Klajn R, Zeldov E. 2020. SQUID-on-tip with single-electron spin sensitivity for high-field and ultra-low temperature nanomagnetic imaging. Nanoscale. 12(5), 3174–3182.","chicago":"Anahory, Y., H. R. Naren, E. O. Lachman, S. Buhbut Sinai, A. Uri, L. Embon, E. Yaakobi, et al. “SQUID-on-Tip with Single-Electron Spin Sensitivity for High-Field and Ultra-Low Temperature Nanomagnetic Imaging.” <i>Nanoscale</i>. Royal Society of Chemistry, 2020. <a href=\"https://doi.org/10.1039/c9nr08578e\">https://doi.org/10.1039/c9nr08578e</a>.","ama":"Anahory Y, Naren HR, Lachman EO, et al. SQUID-on-tip with single-electron spin sensitivity for high-field and ultra-low temperature nanomagnetic imaging. <i>Nanoscale</i>. 2020;12(5):3174-3182. doi:<a href=\"https://doi.org/10.1039/c9nr08578e\">10.1039/c9nr08578e</a>","ieee":"Y. Anahory <i>et al.</i>, “SQUID-on-tip with single-electron spin sensitivity for high-field and ultra-low temperature nanomagnetic imaging,” <i>Nanoscale</i>, vol. 12, no. 5. Royal Society of Chemistry, pp. 3174–3182, 2020.","short":"Y. Anahory, H.R. Naren, E.O. Lachman, S. Buhbut Sinai, A. Uri, L. Embon, E. Yaakobi, Y. Myasoedov, M.E. Huber, R. Klajn, E. Zeldov, Nanoscale 12 (2020) 3174–3182."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication":"Nanoscale","title":"SQUID-on-tip with single-electron spin sensitivity for high-field and ultra-low temperature nanomagnetic imaging","page":"3174-3182","date_created":"2023-08-01T09:37:53Z","article_processing_charge":"No","status":"public","pmid":1,"language":[{"iso":"eng"}],"arxiv":1,"main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2001.03342"}],"external_id":{"arxiv":["2001.03342"],"pmid":["31967152"]},"publication_identifier":{"issn":["2040-3364"],"eissn":["2040-3372"]},"publication_status":"published","author":[{"first_name":"Y.","full_name":"Anahory, Y.","last_name":"Anahory"},{"first_name":"H. R.","last_name":"Naren","full_name":"Naren, H. R."},{"first_name":"E. O.","full_name":"Lachman, E. O.","last_name":"Lachman"},{"first_name":"S.","full_name":"Buhbut Sinai, S.","last_name":"Buhbut Sinai"},{"last_name":"Uri","full_name":"Uri, A.","first_name":"A."},{"first_name":"L.","full_name":"Embon, L.","last_name":"Embon"},{"first_name":"E.","last_name":"Yaakobi","full_name":"Yaakobi, E."},{"last_name":"Myasoedov","full_name":"Myasoedov, Y.","first_name":"Y."},{"last_name":"Huber","full_name":"Huber, M. E.","first_name":"M. E."},{"first_name":"Rafal","id":"8e84690e-1e48-11ed-a02b-a1e6fb8bb53b","full_name":"Klajn, Rafal","last_name":"Klajn"},{"full_name":"Zeldov, E.","last_name":"Zeldov","first_name":"E."}],"type":"journal_article","date_published":"2020-01-10T00:00:00Z","abstract":[{"lang":"eng","text":"Scanning nanoscale superconducting quantum interference devices (nanoSQUIDs) are of growing interest for highly sensitive quantitative imaging of magnetic, spintronic, and transport properties of low-dimensional systems. Utilizing specifically designed grooved quartz capillaries pulled into a sharp pipette, we have fabricated the smallest SQUID-on-tip (SOT) devices with effective diameters down to 39 nm. Integration of a resistive shunt in close proximity to the pipette apex combined with self-aligned deposition of In and Sn, has resulted in SOTs with a flux noise of 42 nΦ0 Hz−1/2, yielding a record low spin noise of 0.29 μB Hz−1/2. In addition, the new SOTs function at sub-Kelvin temperatures and in high magnetic fields of over 2.5 T. Integrating the SOTs into a scanning probe microscope allowed us to image the stray field of a single Fe3O4 nanocube at 300 mK. Our results show that the easy magnetization axis direction undergoes a transition from the 〈111〉 direction at room temperature to an in-plane orientation, which could be attributed to the Verwey phase transition in Fe3O4."}],"extern":"1","scopus_import":"1","publisher":"Royal Society of Chemistry"},{"doi":"10.3847/1538-4357/abbda5","quality_controlled":"1","oa_version":"Preprint","issue":"1","month":"11","volume":904,"year":"2020","article_type":"original","_id":"13460","intvolume":"       904","date_updated":"2024-10-14T12:23:03Z","day":"20","keyword":["Space and Planetary Science","Astronomy and Astrophysics"],"citation":{"apa":"Götberg, Y. L. L., Korol, V., Lamberts, A., Kupfer, T., Breivik, K., Ludwig, B., &#38; Drout, M. R. (2020). Stars stripped in binaries: The living gravitational-wave sources. <i>The Astrophysical Journal</i>. American Astronomical Society. <a href=\"https://doi.org/10.3847/1538-4357/abbda5\">https://doi.org/10.3847/1538-4357/abbda5</a>","mla":"Götberg, Ylva Louise Linsdotter, et al. “Stars Stripped in Binaries: The Living Gravitational-Wave Sources.” <i>The Astrophysical Journal</i>, vol. 904, no. 1, 56, American Astronomical Society, 2020, doi:<a href=\"https://doi.org/10.3847/1538-4357/abbda5\">10.3847/1538-4357/abbda5</a>.","ista":"Götberg YLL, Korol V, Lamberts A, Kupfer T, Breivik K, Ludwig B, Drout MR. 2020. Stars stripped in binaries: The living gravitational-wave sources. The Astrophysical Journal. 904(1), 56.","ama":"Götberg YLL, Korol V, Lamberts A, et al. Stars stripped in binaries: The living gravitational-wave sources. <i>The Astrophysical Journal</i>. 2020;904(1). doi:<a href=\"https://doi.org/10.3847/1538-4357/abbda5\">10.3847/1538-4357/abbda5</a>","chicago":"Götberg, Ylva Louise Linsdotter, V. Korol, A. Lamberts, T. Kupfer, K. Breivik, B. Ludwig, and M. R. Drout. “Stars Stripped in Binaries: The Living Gravitational-Wave Sources.” <i>The Astrophysical Journal</i>. American Astronomical Society, 2020. <a href=\"https://doi.org/10.3847/1538-4357/abbda5\">https://doi.org/10.3847/1538-4357/abbda5</a>.","ieee":"Y. L. L. Götberg <i>et al.</i>, “Stars stripped in binaries: The living gravitational-wave sources,” <i>The Astrophysical Journal</i>, vol. 904, no. 1. American Astronomical Society, 2020.","short":"Y.L.L. Götberg, V. Korol, A. Lamberts, T. Kupfer, K. Breivik, B. Ludwig, M.R. Drout, The Astrophysical Journal 904 (2020)."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"Stars stripped in binaries: The living gravitational-wave sources","publication":"The Astrophysical Journal","status":"public","article_processing_charge":"No","date_created":"2023-08-03T10:12:07Z","arxiv":1,"language":[{"iso":"eng"}],"external_id":{"arxiv":["2006.07382"]},"article_number":"56","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2006.07382"}],"author":[{"orcid":"0000-0002-6960-6911","last_name":"Götberg","full_name":"Götberg, Ylva Louise Linsdotter","id":"d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d","first_name":"Ylva Louise Linsdotter"},{"first_name":"V.","last_name":"Korol","full_name":"Korol, V."},{"last_name":"Lamberts","full_name":"Lamberts, A.","first_name":"A."},{"last_name":"Kupfer","full_name":"Kupfer, T.","first_name":"T."},{"full_name":"Breivik, K.","last_name":"Breivik","first_name":"K."},{"first_name":"B.","last_name":"Ludwig","full_name":"Ludwig, B."},{"first_name":"M. R.","last_name":"Drout","full_name":"Drout, M. R."}],"oa":1,"publication_identifier":{"issn":["0004-637X"],"eissn":["1538-4357"]},"publication_status":"published","extern":"1","scopus_import":"1","publisher":"American Astronomical Society","date_published":"2020-11-20T00:00:00Z","abstract":[{"text":"Binary interaction can cause stellar envelopes to be stripped, which significantly reduces the radius of the star. The orbit of a binary composed of a stripped star and a compact object can therefore be so tight that the gravitational radiation the system produces reaches frequencies accessible to the Laser Interferometer Space Antenna (LISA). Two such stripped stars in tight orbits with white dwarfs are known so far (ZTF J2130+4420 and CD−30°11223), but many more are expected to exist. These binaries provide important constraints for binary evolution models and may be used as LISA verification sources. We develop a Monte Carlo code that uses detailed evolutionary models to simulate the Galactic population of stripped stars in tight orbits with either neutron star or white dwarf companions. We predict 0–100 stripped star + white dwarf binaries and 0–4 stripped star + neutron star binaries with a signal-to-noise ratio >5 after 10 yr of observations with LISA. More than 90% of these binaries are expected to show large radial velocity shifts of ≳200 $\\,\\mathrm{km}\\,{{\\rm{s}}}^{-1}$, which are spectroscopically detectable. Photometric variability due to tidal deformation of the stripped star is also expected and has been observed in ZTF J2130+4420 and CD−30°11223. In addition, the stripped star + neutron star binaries are expected to be X-ray bright with LX ≳ 1033–1036 $\\,\\mathrm{erg}\\,{{\\rm{s}}}^{-1}$. Our results show that stripped star binaries are promising multimessenger sources for the upcoming electromagnetic and gravitational wave facilities.","lang":"eng"}],"type":"journal_article"},{"type":"journal_article","abstract":[{"lang":"eng","text":"High-resolution numerical simulations including feedback and aimed at calculating the escape fraction (fesc) of hydrogen-ionizing photons often assume stellar radiation based on single-stellar population synthesis models. However, strong evidence suggests the binary fraction of massive stars is ≳70%. Moreover, simulations so far have yielded values of fesc falling only on the lower end of the ∼10%–20% range, the amount presumed necessary to reionize the universe. Analyzing a high-resolution (4 pc) cosmological radiation-hydrodynamic simulation, we study how fesc changes when we include two different products of binary stellar evolution—stars stripped of their hydrogen envelopes and massive blue stragglers. Both produce significant amounts of ionizing photons 10–200 Myr after each starburst. We find the relative importance of these photons to be amplified with respect to escaped ionizing photons, because peaks in star formation rates (SFRs) and fesc are often out of phase by this 10–200 Myr. Additionally, low-mass, bursty galaxies emit Lyman continuum radiation primarily from binary products when SFRs are low. Observations of these galaxies by the James Webb Space Telescope could provide crucial information on the evolution of binary stars as a function of redshift. Overall, including stripped stars and massive blue stragglers increases our photon-weighted mean escape fraction ($\\langle {f}_{\\mathrm{esc}}\\rangle $) by ∼13% and ∼10%, respectively, resulting in $\\langle {f}_{\\mathrm{esc}}\\rangle =17 \\% $. Our results emphasize that using updated stellar population synthesis models with binary stellar evolution provides a more sound physical basis for stellar reionization."}],"date_published":"2020-09-23T00:00:00Z","scopus_import":"1","publisher":"American Astronomical Society","extern":"1","publication_identifier":{"eissn":["1538-4357"],"issn":["0004-637X"]},"publication_status":"published","oa":1,"author":[{"full_name":"Secunda, Amy","last_name":"Secunda","first_name":"Amy"},{"full_name":"Cen, Renyue","last_name":"Cen","first_name":"Renyue"},{"last_name":"Kimm","full_name":"Kimm, Taysun","first_name":"Taysun"},{"full_name":"Götberg, Ylva Louise Linsdotter","last_name":"Götberg","orcid":"0000-0002-6960-6911","id":"d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d","first_name":"Ylva Louise Linsdotter"},{"full_name":"de Mink, Selma E.","last_name":"de Mink","first_name":"Selma E."}],"main_file_link":[{"open_access":"1","url":"https://doi.org/10.3847/1538-4357/abaefa"}],"external_id":{"arxiv":["2007.15012"]},"article_number":"72","language":[{"iso":"eng"}],"arxiv":1,"article_processing_charge":"No","date_created":"2023-08-03T10:12:16Z","status":"public","publication":"The Astrophysical Journal","title":"Delayed photons from binary evolution help reionize the universe","citation":{"apa":"Secunda, A., Cen, R., Kimm, T., Götberg, Y. L. L., &#38; de Mink, S. E. (2020). Delayed photons from binary evolution help reionize the universe. <i>The Astrophysical Journal</i>. American Astronomical Society. <a href=\"https://doi.org/10.3847/1538-4357/abaefa\">https://doi.org/10.3847/1538-4357/abaefa</a>","mla":"Secunda, Amy, et al. “Delayed Photons from Binary Evolution Help Reionize the Universe.” <i>The Astrophysical Journal</i>, vol. 901, no. 1, 72, American Astronomical Society, 2020, doi:<a href=\"https://doi.org/10.3847/1538-4357/abaefa\">10.3847/1538-4357/abaefa</a>.","ama":"Secunda A, Cen R, Kimm T, Götberg YLL, de Mink SE. Delayed photons from binary evolution help reionize the universe. <i>The Astrophysical Journal</i>. 2020;901(1). doi:<a href=\"https://doi.org/10.3847/1538-4357/abaefa\">10.3847/1538-4357/abaefa</a>","chicago":"Secunda, Amy, Renyue Cen, Taysun Kimm, Ylva Louise Linsdotter Götberg, and Selma E. de Mink. “Delayed Photons from Binary Evolution Help Reionize the Universe.” <i>The Astrophysical Journal</i>. American Astronomical Society, 2020. <a href=\"https://doi.org/10.3847/1538-4357/abaefa\">https://doi.org/10.3847/1538-4357/abaefa</a>.","ista":"Secunda A, Cen R, Kimm T, Götberg YLL, de Mink SE. 2020. Delayed photons from binary evolution help reionize the universe. The Astrophysical Journal. 901(1), 72.","ieee":"A. Secunda, R. Cen, T. Kimm, Y. L. L. Götberg, and S. E. de Mink, “Delayed photons from binary evolution help reionize the universe,” <i>The Astrophysical Journal</i>, vol. 901, no. 1. American Astronomical Society, 2020.","short":"A. Secunda, R. Cen, T. Kimm, Y.L.L. Götberg, S.E. de Mink, The Astrophysical Journal 901 (2020)."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","keyword":["Space and Planetary Science","Astronomy and Astrophysics"],"date_updated":"2023-08-09T13:01:45Z","day":"23","intvolume":"       901","_id":"13461","year":"2020","article_type":"original","volume":901,"month":"09","issue":"1","oa_version":"Published Version","quality_controlled":"1","doi":"10.3847/1538-4357/abaefa"},{"external_id":{"arxiv":["2002.05077"]},"article_number":"A56","main_file_link":[{"url":"https://doi.org/10.1051/0004-6361/202037710","open_access":"1"}],"author":[{"first_name":"M.","last_name":"Renzo","full_name":"Renzo, M."},{"last_name":"Farmer","full_name":"Farmer, R.","first_name":"R."},{"last_name":"Justham","full_name":"Justham, S.","first_name":"S."},{"first_name":"Ylva Louise Linsdotter","id":"d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d","full_name":"Götberg, Ylva Louise Linsdotter","last_name":"Götberg","orcid":"0000-0002-6960-6911"},{"first_name":"S. E.","full_name":"de Mink, S. E.","last_name":"de Mink"},{"full_name":"Zapartas, E.","last_name":"Zapartas","first_name":"E."},{"first_name":"P.","full_name":"Marchant, P.","last_name":"Marchant"},{"first_name":"N.","last_name":"Smith","full_name":"Smith, N."}],"oa":1,"publication_status":"published","publication_identifier":{"issn":["0004-6361"],"eissn":["1432-0746"]},"scopus_import":"1","publisher":"EDP Sciences","extern":"1","abstract":[{"text":"Present and upcoming time-domain astronomy efforts, in part driven by gravitational-wave follow-up campaigns, will unveil a variety of rare explosive transients in the sky. Here, we focus on pulsational pair-instability evolution, which can result in signatures that are observable with electromagnetic and gravitational waves. We simulated grids of bare helium stars to characterize the resulting black hole (BH) masses together with the ejecta composition, velocity, and thermal state. We find that the stars do not react “elastically” to the thermonuclear ignition in the core: there is not a one-to-one correspondence between pair-instability driven ignition and mass ejections, which causes ambiguity as to what is an observable pulse. In agreement with previous studies, we find that for initial helium core masses of 37.5 M⊙ ≲ MHe, init ≲ 41 M⊙, corresponding to carbon-oxygen core masses 27.5 M⊙ ≲ MCO ≲ 30.1 M⊙, the explosions are not strong enough to affect the surface. With increasing initial helium core mass, they become progressively stronger causing first large radial expansion (41 M⊙ ≲ MHe, init ≲ 42 M⊙, corresponding to 30.1 M⊙ ≲ MCO ≲ 30.8 M⊙) and, finally, also mass ejection episodes (for MHe, init ≳ 42 M⊙, or MCO ≳ 30.8 M⊙). The lowest mass helium core to be fully disrupted in a pair-instability supernova is MHe, init ≃ 80 M⊙, corresponding to MCO ≃ 55 M⊙. Models with MHe, init ≳ 200 M⊙ (MCO ≳ 114 M⊙) reach the photodisintegration regime, resulting in BHs with masses of MBH ≳ 125 M⊙. Although this is currently considered unlikely, if BHs from these models form via (weak) explosions, the previously-ejected material might be hit by the blast wave and convert kinetic energy into observable electromagnetic radiation. We characterize the hydrogen-free circumstellar material from the pulsational pair-instability of helium cores by simply assuming that the ejecta maintain a constant velocity after ejection. We find that our models produce helium-rich ejecta with mass of 10−3 M⊙ ≲ MCSM ≲ 40 M⊙, the larger values corresponding to the more massive progenitor stars. These ejecta are typically launched at a few thousand km s−1 and reach distances of ∼1012 − 1015 cm before the core-collapse of the star. The delays between mass ejection events and the final collapse span a wide and mass-dependent range (from subhour to 104 years), and the shells ejected can also collide with each other, powering supernova impostor events before the final core-collapse. The range of properties we find suggests a possible connection with (some) type Ibn supernovae.","lang":"eng"}],"date_published":"2020-08-12T00:00:00Z","type":"journal_article","title":"Predictions for the hydrogen-free ejecta of pulsational pair-instability supernovae","publication":"Astronomy & Astrophysics","status":"public","date_created":"2023-08-03T10:12:58Z","article_processing_charge":"No","arxiv":1,"language":[{"iso":"eng"}],"article_type":"original","year":"2020","_id":"13463","intvolume":"       640","date_updated":"2023-08-09T12:58:41Z","day":"12","keyword":["Space and Planetary Science","Astronomy and Astrophysics"],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"short":"M. Renzo, R. Farmer, S. Justham, Y.L.L. Götberg, S.E. de Mink, E. Zapartas, P. Marchant, N. Smith, Astronomy &#38; Astrophysics 640 (2020).","ama":"Renzo M, Farmer R, Justham S, et al. Predictions for the hydrogen-free ejecta of pulsational pair-instability supernovae. <i>Astronomy &#38; Astrophysics</i>. 2020;640. doi:<a href=\"https://doi.org/10.1051/0004-6361/202037710\">10.1051/0004-6361/202037710</a>","ista":"Renzo M, Farmer R, Justham S, Götberg YLL, de Mink SE, Zapartas E, Marchant P, Smith N. 2020. Predictions for the hydrogen-free ejecta of pulsational pair-instability supernovae. Astronomy &#38; Astrophysics. 640, A56.","ieee":"M. Renzo <i>et al.</i>, “Predictions for the hydrogen-free ejecta of pulsational pair-instability supernovae,” <i>Astronomy &#38; Astrophysics</i>, vol. 640. EDP Sciences, 2020.","chicago":"Renzo, M., R. Farmer, S. Justham, Ylva Louise Linsdotter Götberg, S. E. de Mink, E. Zapartas, P. Marchant, and N. Smith. “Predictions for the Hydrogen-Free Ejecta of Pulsational Pair-Instability Supernovae.” <i>Astronomy &#38; Astrophysics</i>. EDP Sciences, 2020. <a href=\"https://doi.org/10.1051/0004-6361/202037710\">https://doi.org/10.1051/0004-6361/202037710</a>.","mla":"Renzo, M., et al. “Predictions for the Hydrogen-Free Ejecta of Pulsational Pair-Instability Supernovae.” <i>Astronomy &#38; Astrophysics</i>, vol. 640, A56, EDP Sciences, 2020, doi:<a href=\"https://doi.org/10.1051/0004-6361/202037710\">10.1051/0004-6361/202037710</a>.","apa":"Renzo, M., Farmer, R., Justham, S., Götberg, Y. L. L., de Mink, S. E., Zapartas, E., … Smith, N. (2020). Predictions for the hydrogen-free ejecta of pulsational pair-instability supernovae. <i>Astronomy &#38; Astrophysics</i>. EDP Sciences. <a href=\"https://doi.org/10.1051/0004-6361/202037710\">https://doi.org/10.1051/0004-6361/202037710</a>"},"doi":"10.1051/0004-6361/202037710","quality_controlled":"1","oa_version":"Published Version","month":"08","volume":640},{"external_id":{"arxiv":["2003.01120"]},"article_number":"A6","main_file_link":[{"url":"https://doi.org/10.1051/0004-6361/201937300","open_access":"1"}],"extern":"1","publisher":"EDP Sciences","scopus_import":"1","abstract":[{"text":"Massive binaries that merge as compact objects are the progenitors of gravitational-wave sources. Most of these binaries experience one or more phases of mass transfer, during which one of the stars loses all or part of its outer envelope and becomes a stripped-envelope star. The evolution of the size of these stripped stars is crucial in determining whether they experience further interactions and understanding their ultimate fate. We present new calculations of stripped-envelope stars based on binary evolution models computed with MESA. We use these to investigate their radius evolution as a function of mass and metallicity. We further discuss their pre-supernova observable characteristics and potential consequences of their evolution on the properties of supernovae from stripped stars. At high metallicity, we find that practically all of the hydrogen-rich envelope is removed, which is in agreement with earlier findings. Only progenitors with initial masses below 10 M⊙ expand to large radii (up to 100 R⊙), while more massive progenitors remain compact. At low metallicity, a substantial amount of hydrogen remains and the progenitors can, in principle, expand to giant sizes (> 400 R⊙) for all masses we consider. This implies that they can fill their Roche lobe anew. We show that the prescriptions commonly used in population synthesis models underestimate the stellar radii by up to two orders of magnitude. We expect that this has consequences for the predictions for gravitational-wave sources from double neutron star mergers, particularly with regard to their metallicity dependence.","lang":"eng"}],"date_published":"2020-05-01T00:00:00Z","type":"journal_article","author":[{"last_name":"Laplace","full_name":"Laplace, E.","first_name":"E."},{"last_name":"Götberg","orcid":"0000-0002-6960-6911","full_name":"Götberg, Ylva Louise Linsdotter","id":"d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d","first_name":"Ylva Louise Linsdotter"},{"last_name":"de Mink","full_name":"de Mink, S. E.","first_name":"S. E."},{"first_name":"S.","full_name":"Justham, S.","last_name":"Justham"},{"full_name":"Farmer, R.","last_name":"Farmer","first_name":"R."}],"oa":1,"publication_status":"published","publication_identifier":{"eissn":["1432-0746"],"issn":["0004-6361"]},"status":"public","article_processing_charge":"No","date_created":"2023-08-03T10:13:10Z","title":"The expansion of stripped-envelope stars: Consequences for supernovae and gravitational-wave progenitors","publication":"Astronomy & Astrophysics","arxiv":1,"language":[{"iso":"eng"}],"_id":"13464","intvolume":"       637","year":"2020","article_type":"original","citation":{"mla":"Laplace, E., et al. “The Expansion of Stripped-Envelope Stars: Consequences for Supernovae and Gravitational-Wave Progenitors.” <i>Astronomy &#38; Astrophysics</i>, vol. 637, A6, EDP Sciences, 2020, doi:<a href=\"https://doi.org/10.1051/0004-6361/201937300\">10.1051/0004-6361/201937300</a>.","apa":"Laplace, E., Götberg, Y. L. L., de Mink, S. E., Justham, S., &#38; Farmer, R. (2020). The expansion of stripped-envelope stars: Consequences for supernovae and gravitational-wave progenitors. <i>Astronomy &#38; Astrophysics</i>. EDP Sciences. <a href=\"https://doi.org/10.1051/0004-6361/201937300\">https://doi.org/10.1051/0004-6361/201937300</a>","short":"E. Laplace, Y.L.L. Götberg, S.E. de Mink, S. Justham, R. Farmer, Astronomy &#38; Astrophysics 637 (2020).","ieee":"E. Laplace, Y. L. L. Götberg, S. E. de Mink, S. Justham, and R. Farmer, “The expansion of stripped-envelope stars: Consequences for supernovae and gravitational-wave progenitors,” <i>Astronomy &#38; Astrophysics</i>, vol. 637. EDP Sciences, 2020.","ama":"Laplace E, Götberg YLL, de Mink SE, Justham S, Farmer R. The expansion of stripped-envelope stars: Consequences for supernovae and gravitational-wave progenitors. <i>Astronomy &#38; Astrophysics</i>. 2020;637. doi:<a href=\"https://doi.org/10.1051/0004-6361/201937300\">10.1051/0004-6361/201937300</a>","ista":"Laplace E, Götberg YLL, de Mink SE, Justham S, Farmer R. 2020. The expansion of stripped-envelope stars: Consequences for supernovae and gravitational-wave progenitors. Astronomy &#38; Astrophysics. 637, A6.","chicago":"Laplace, E., Ylva Louise Linsdotter Götberg, S. E. de Mink, S. Justham, and R. Farmer. “The Expansion of Stripped-Envelope Stars: Consequences for Supernovae and Gravitational-Wave Progenitors.” <i>Astronomy &#38; Astrophysics</i>. EDP Sciences, 2020. <a href=\"https://doi.org/10.1051/0004-6361/201937300\">https://doi.org/10.1051/0004-6361/201937300</a>."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_updated":"2023-08-09T12:56:32Z","day":"01","keyword":["Space and Planetary Science","Astronomy and Astrophysics"],"doi":"10.1051/0004-6361/201937300","quality_controlled":"1","oa_version":"Published Version","month":"05","volume":637},{"publisher":"Oxford University Press","scopus_import":"1","extern":"1","date_published":"2020-04-04T00:00:00Z","type":"journal_article","abstract":[{"lang":"eng","text":"Gravitational-wave detections are now probing the black hole (BH) mass distribution, including the predicted pair-instability mass gap. These data require robust quantitative predictions, which are challenging to obtain. The most massive BH progenitors experience episodic mass ejections on time-scales shorter than the convective turnover time-scale. This invalidates the steady-state assumption on which the classic mixing length theory relies. We compare the final BH masses computed with two different versions of the stellar evolutionary code MESA\r\n⁠: (i) using the default implementation of Paxton et al. (2018) and (ii) solving an additional equation accounting for the time-scale for convective deceleration. In the second grid, where stronger convection develops during the pulses and carries part of the energy, we find weaker pulses. This leads to lower amounts of mass being ejected and thus higher final BH masses of up to ∼5M⊙\r\n⁠. The differences are much smaller for the progenitors that determine the maximum mass of BHs below the gap. This prediction is robust at MBH,max≃48M⊙\r\n⁠, at least within the idealized context of this study. This is an encouraging indication that current models are robust enough for comparison with the present-day gravitational-wave detections. However, the large differences between individual models emphasize the importance of improving the treatment of convection in stellar models, especially in the light of the data anticipated from the third generation of gravitational-wave detectors."}],"oa":1,"publication_identifier":{"issn":["0035-8711"],"eissn":["1365-2966"]},"publication_status":"published","author":[{"first_name":"M","last_name":"Renzo","full_name":"Renzo, M"},{"last_name":"Farmer","full_name":"Farmer, R J","first_name":"R J"},{"last_name":"Justham","full_name":"Justham, S","first_name":"S"},{"first_name":"S E","last_name":"de Mink","full_name":"de Mink, S E"},{"first_name":"Ylva Louise Linsdotter","id":"d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d","orcid":"0000-0002-6960-6911","last_name":"Götberg","full_name":"Götberg, Ylva Louise Linsdotter"},{"last_name":"Marchant","full_name":"Marchant, P","first_name":"P"}],"main_file_link":[{"url":"https://doi.org/10.1093/mnras/staa549","open_access":"1"}],"external_id":{"arxiv":["2002.08200"]},"language":[{"iso":"eng"}],"arxiv":1,"page":"4333-4341","status":"public","date_created":"2023-08-03T10:13:20Z","article_processing_charge":"No","publication":"Monthly Notices of the Royal Astronomical Society","title":"Sensitivity of the lower edge of the pair-instability black hole mass gap to the treatment of time-dependent convection","citation":{"mla":"Renzo, M., et al. “Sensitivity of the Lower Edge of the Pair-Instability Black Hole Mass Gap to the Treatment of Time-Dependent Convection.” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 493, no. 3, Oxford University Press, 2020, pp. 4333–41, doi:<a href=\"https://doi.org/10.1093/mnras/staa549\">10.1093/mnras/staa549</a>.","apa":"Renzo, M., Farmer, R. J., Justham, S., de Mink, S. E., Götberg, Y. L. L., &#38; Marchant, P. (2020). Sensitivity of the lower edge of the pair-instability black hole mass gap to the treatment of time-dependent convection. <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University Press. <a href=\"https://doi.org/10.1093/mnras/staa549\">https://doi.org/10.1093/mnras/staa549</a>","short":"M. Renzo, R.J. Farmer, S. Justham, S.E. de Mink, Y.L.L. Götberg, P. Marchant, Monthly Notices of the Royal Astronomical Society 493 (2020) 4333–4341.","ieee":"M. Renzo, R. J. Farmer, S. Justham, S. E. de Mink, Y. L. L. Götberg, and P. Marchant, “Sensitivity of the lower edge of the pair-instability black hole mass gap to the treatment of time-dependent convection,” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 493, no. 3. Oxford University Press, pp. 4333–4341, 2020.","chicago":"Renzo, M, R J Farmer, S Justham, S E de Mink, Ylva Louise Linsdotter Götberg, and P Marchant. “Sensitivity of the Lower Edge of the Pair-Instability Black Hole Mass Gap to the Treatment of Time-Dependent Convection.” <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University Press, 2020. <a href=\"https://doi.org/10.1093/mnras/staa549\">https://doi.org/10.1093/mnras/staa549</a>.","ama":"Renzo M, Farmer RJ, Justham S, de Mink SE, Götberg YLL, Marchant P. Sensitivity of the lower edge of the pair-instability black hole mass gap to the treatment of time-dependent convection. <i>Monthly Notices of the Royal Astronomical Society</i>. 2020;493(3):4333-4341. doi:<a href=\"https://doi.org/10.1093/mnras/staa549\">10.1093/mnras/staa549</a>","ista":"Renzo M, Farmer RJ, Justham S, de Mink SE, Götberg YLL, Marchant P. 2020. Sensitivity of the lower edge of the pair-instability black hole mass gap to the treatment of time-dependent convection. Monthly Notices of the Royal Astronomical Society. 493(3), 4333–4341."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","day":"04","date_updated":"2023-08-09T12:53:37Z","keyword":["Space and Planetary Science","Astronomy and Astrophysics"],"intvolume":"       493","_id":"13465","year":"2020","article_type":"original","volume":493,"month":"04","issue":"3","quality_controlled":"1","oa_version":"Published Version","doi":"10.1093/mnras/staa549"},{"publication_identifier":{"eissn":["1432-0746"],"issn":["0004-6361"]},"publication_status":"published","oa":1,"author":[{"last_name":"Bodensteiner","full_name":"Bodensteiner, J.","first_name":"J."},{"first_name":"H.","last_name":"Sana","full_name":"Sana, H."},{"full_name":"Mahy, L.","last_name":"Mahy","first_name":"L."},{"last_name":"Patrick","full_name":"Patrick, L. R.","first_name":"L. R."},{"first_name":"A.","last_name":"de Koter","full_name":"de Koter, A."},{"first_name":"S. E.","full_name":"de Mink, S. E.","last_name":"de Mink"},{"first_name":"C. J.","last_name":"Evans","full_name":"Evans, C. J."},{"first_name":"Ylva Louise Linsdotter","id":"d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d","orcid":"0000-0002-6960-6911","last_name":"Götberg","full_name":"Götberg, Ylva Louise Linsdotter"},{"first_name":"N.","full_name":"Langer, N.","last_name":"Langer"},{"last_name":"Lennon","full_name":"Lennon, D. J.","first_name":"D. J."},{"last_name":"Schneider","full_name":"Schneider, F. R. N.","first_name":"F. R. N."},{"last_name":"Tramper","full_name":"Tramper, F.","first_name":"F."}],"type":"journal_article","date_published":"2020-02-05T00:00:00Z","abstract":[{"text":"Context. A majority of massive stars are part of binary systems, a large fraction of which will inevitably interact during their lives. Binary-interaction products (BiPs), that is, stars affected by such interaction, are expected to be commonly present in stellar populations. BiPs are thus a crucial ingredient in the understanding of stellar evolution.\r\nAims. We aim to identify and characterize a statistically significant sample of BiPs by studying clusters of 10 − 40 Myr, an age at which binary population models predict the abundance of BiPs to be highest. One example of such a cluster is NGC 330 in the Small Magellanic Cloud.\r\nMethods. Using MUSE WFM-AO observations of NGC 330, we resolved the dense cluster core for the first time and were able to extract spectra of its entire massive star population. We developed an automated spectral classification scheme based on the equivalent widths of spectral lines in the red part of the spectrum.\r\nResults. We characterize the massive star content of the core of NGC 330, which contains more than 200 B stars, 2 O stars, 6 A-type supergiants, and 11 red supergiants. We find a lower limit on the Be star fraction of 32 ± 3% in the whole sample. It increases to at least 46 ± 10% when we only consider stars brighter than V = 17 mag. We estimate an age of the cluster core between 35 and 40 Myr and a total cluster mass of 88−18+17 × 103 M⊙.\r\nConclusions. We find that the population in the cluster core is different than the population in the outskirts: while the stellar content in the core appears to be older than the stars in the outskirts, the Be star fraction and the observed binary fraction are significantly higher. Furthermore, we detect several BiP candidates that will be subject of future studies.","lang":"eng"}],"scopus_import":"1","publisher":"EDP Sciences","extern":"1","main_file_link":[{"url":"https://doi.org/10.1051/0004-6361/201936743","open_access":"1"}],"article_number":"A51","external_id":{"arxiv":["1911.03477"]},"language":[{"iso":"eng"}],"arxiv":1,"publication":"Astronomy & Astrophysics","title":"The young massive SMC cluster NGC 330 seen by MUSE","article_processing_charge":"No","date_created":"2023-08-03T10:13:29Z","status":"public","keyword":["stars: massive / stars: emission-line / Be / binaries: spectroscopic / blue stragglers / Magellanic Clouds"],"date_updated":"2023-08-09T12:50:01Z","day":"05","citation":{"apa":"Bodensteiner, J., Sana, H., Mahy, L., Patrick, L. R., de Koter, A., de Mink, S. E., … Tramper, F. (2020). The young massive SMC cluster NGC 330 seen by MUSE. <i>Astronomy &#38; Astrophysics</i>. EDP Sciences. <a href=\"https://doi.org/10.1051/0004-6361/201936743\">https://doi.org/10.1051/0004-6361/201936743</a>","mla":"Bodensteiner, J., et al. “The Young Massive SMC Cluster NGC 330 Seen by MUSE.” <i>Astronomy &#38; Astrophysics</i>, vol. 634, A51, EDP Sciences, 2020, doi:<a href=\"https://doi.org/10.1051/0004-6361/201936743\">10.1051/0004-6361/201936743</a>.","ista":"Bodensteiner J, Sana H, Mahy L, Patrick LR, de Koter A, de Mink SE, Evans CJ, Götberg YLL, Langer N, Lennon DJ, Schneider FRN, Tramper F. 2020. The young massive SMC cluster NGC 330 seen by MUSE. Astronomy &#38; Astrophysics. 634, A51.","chicago":"Bodensteiner, J., H. Sana, L. Mahy, L. R. Patrick, A. de Koter, S. E. de Mink, C. J. Evans, et al. “The Young Massive SMC Cluster NGC 330 Seen by MUSE.” <i>Astronomy &#38; Astrophysics</i>. EDP Sciences, 2020. <a href=\"https://doi.org/10.1051/0004-6361/201936743\">https://doi.org/10.1051/0004-6361/201936743</a>.","ieee":"J. Bodensteiner <i>et al.</i>, “The young massive SMC cluster NGC 330 seen by MUSE,” <i>Astronomy &#38; Astrophysics</i>, vol. 634. EDP Sciences, 2020.","ama":"Bodensteiner J, Sana H, Mahy L, et al. The young massive SMC cluster NGC 330 seen by MUSE. <i>Astronomy &#38; Astrophysics</i>. 2020;634. doi:<a href=\"https://doi.org/10.1051/0004-6361/201936743\">10.1051/0004-6361/201936743</a>","short":"J. Bodensteiner, H. Sana, L. Mahy, L.R. Patrick, A. de Koter, S.E. de Mink, C.J. Evans, Y.L.L. Götberg, N. Langer, D.J. Lennon, F.R.N. Schneider, F. Tramper, Astronomy &#38; Astrophysics 634 (2020)."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_type":"original","year":"2020","intvolume":"       634","_id":"13466","volume":634,"month":"02","oa_version":"Published Version","quality_controlled":"1","doi":"10.1051/0004-6361/201936743"},{"title":"Contribution from stars stripped in binaries to cosmic reionization of hydrogen and helium","publication":"Astronomy & Astrophysics","status":"public","date_created":"2023-08-03T10:13:43Z","article_processing_charge":"No","arxiv":1,"language":[{"iso":"eng"}],"external_id":{"arxiv":["1911.00543"]},"article_number":"A134","main_file_link":[{"url":"https://doi.org/10.1051/0004-6361/201936669","open_access":"1"}],"author":[{"first_name":"Ylva Louise Linsdotter","id":"d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d","orcid":"0000-0002-6960-6911","last_name":"Götberg","full_name":"Götberg, Ylva Louise Linsdotter"},{"first_name":"S. E.","last_name":"de Mink","full_name":"de Mink, S. E."},{"full_name":"McQuinn, M.","last_name":"McQuinn","first_name":"M."},{"full_name":"Zapartas, E.","last_name":"Zapartas","first_name":"E."},{"full_name":"Groh, J. H.","last_name":"Groh","first_name":"J. H."},{"full_name":"Norman, C.","last_name":"Norman","first_name":"C."}],"oa":1,"publication_identifier":{"issn":["0004-6361"],"eissn":["1432-0746"]},"publication_status":"published","publisher":"EDP Sciences","extern":"1","scopus_import":"1","date_published":"2020-02-25T00:00:00Z","abstract":[{"text":"Massive stars are often found in binary systems, and it has been argued that binary products boost the ionizing radiation of stellar populations. Accurate predictions for binary products are needed to understand and quantify their contribution to cosmic reionization. We investigate the contribution of stars stripped in binaries because (1) they are, arguably, the best-understood products of binary evolution, (2) we recently produced the first radiative transfer calculations for the atmospheres of these stripped stars that predict their ionizing spectra, and (3) they are very promising sources because they boost the ionizing emission of stellar populations at late times. This allows stellar feedback to clear the surroundings such that a higher fraction of their photons can escape and ionize the intergalactic medium. Combining our detailed predictions for the ionizing spectra with a simple cosmic reionization model, we estimate that stripped stars contributed tens of percent of the photons that caused cosmic reionization of hydrogen, depending on the assumed escape fractions. More importantly, stripped stars harden the ionizing emission. We estimate that the spectral index for the ionizing part of the spectrum can increase to −1 compared to ≲ − 2 for single stars. At high redshift, stripped stars and massive single stars combined dominate the He II-ionizing emission, but we expect that active galactic nuclei drive cosmic helium reionization. Further observational consequences we expect are (1) high ionization states for the intergalactic gas surrounding stellar systems, such as C IV and Si IV, and (2) additional heating of the intergalactic medium of up to a few thousand Kelvin. Quantifying these warrants the inclusion of accurate models for stripped stars and other binary products in full cosmological simulations.","lang":"eng"}],"type":"journal_article","doi":"10.1051/0004-6361/201936669","quality_controlled":"1","oa_version":"Published Version","month":"02","volume":634,"article_type":"original","year":"2020","_id":"13467","intvolume":"       634","day":"25","date_updated":"2024-10-14T12:22:53Z","keyword":["Space and Planetary Science","Astronomy and Astrophysics"],"citation":{"mla":"Götberg, Ylva Louise Linsdotter, et al. “Contribution from Stars Stripped in Binaries to Cosmic Reionization of Hydrogen and Helium.” <i>Astronomy &#38; Astrophysics</i>, vol. 634, A134, EDP Sciences, 2020, doi:<a href=\"https://doi.org/10.1051/0004-6361/201936669\">10.1051/0004-6361/201936669</a>.","apa":"Götberg, Y. L. L., de Mink, S. E., McQuinn, M., Zapartas, E., Groh, J. H., &#38; Norman, C. (2020). Contribution from stars stripped in binaries to cosmic reionization of hydrogen and helium. <i>Astronomy &#38; Astrophysics</i>. EDP Sciences. <a href=\"https://doi.org/10.1051/0004-6361/201936669\">https://doi.org/10.1051/0004-6361/201936669</a>","short":"Y.L.L. Götberg, S.E. de Mink, M. McQuinn, E. Zapartas, J.H. Groh, C. Norman, Astronomy &#38; Astrophysics 634 (2020).","ieee":"Y. L. L. Götberg, S. E. de Mink, M. McQuinn, E. Zapartas, J. H. Groh, and C. Norman, “Contribution from stars stripped in binaries to cosmic reionization of hydrogen and helium,” <i>Astronomy &#38; Astrophysics</i>, vol. 634. EDP Sciences, 2020.","ista":"Götberg YLL, de Mink SE, McQuinn M, Zapartas E, Groh JH, Norman C. 2020. Contribution from stars stripped in binaries to cosmic reionization of hydrogen and helium. Astronomy &#38; Astrophysics. 634, A134.","chicago":"Götberg, Ylva Louise Linsdotter, S. E. de Mink, M. McQuinn, E. Zapartas, J. H. Groh, and C. Norman. “Contribution from Stars Stripped in Binaries to Cosmic Reionization of Hydrogen and Helium.” <i>Astronomy &#38; Astrophysics</i>. EDP Sciences, 2020. <a href=\"https://doi.org/10.1051/0004-6361/201936669\">https://doi.org/10.1051/0004-6361/201936669</a>.","ama":"Götberg YLL, de Mink SE, McQuinn M, Zapartas E, Groh JH, Norman C. Contribution from stars stripped in binaries to cosmic reionization of hydrogen and helium. <i>Astronomy &#38; Astrophysics</i>. 2020;634. doi:<a href=\"https://doi.org/10.1051/0004-6361/201936669\">10.1051/0004-6361/201936669</a>"},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87"},{"year":"2020","article_type":"original","intvolume":"        53","_id":"13998","keyword":["Condensed Matter Physics","Atomic and Molecular Physics","and Optics"],"day":"17","date_updated":"2023-08-22T07:36:36Z","citation":{"short":"G. Vampa, J. Lu, Y.S. You, D.R. Baykusheva, M. Wu, H. Liu, K.J. Schafer, M.B. Gaarde, D.A. Reis, S. Ghimire, Journal of Physics B: Atomic, Molecular and Optical Physics 53 (2020).","chicago":"Vampa, Giulio, Jian Lu, Yong Sing You, Denitsa Rangelova Baykusheva, Mengxi Wu, Hanzhe Liu, Kenneth J Schafer, Mette B Gaarde, David A Reis, and Shambhu Ghimire. “Attosecond Synchronization of Extreme Ultraviolet High Harmonics from Crystals.” <i>Journal of Physics B: Atomic, Molecular and Optical Physics</i>. IOP Publishing, 2020. <a href=\"https://doi.org/10.1088/1361-6455/ab8e56\">https://doi.org/10.1088/1361-6455/ab8e56</a>.","ama":"Vampa G, Lu J, You YS, et al. Attosecond synchronization of extreme ultraviolet high harmonics from crystals. <i>Journal of Physics B: Atomic, Molecular and Optical Physics</i>. 2020;53(14). doi:<a href=\"https://doi.org/10.1088/1361-6455/ab8e56\">10.1088/1361-6455/ab8e56</a>","ieee":"G. Vampa <i>et al.</i>, “Attosecond synchronization of extreme ultraviolet high harmonics from crystals,” <i>Journal of Physics B: Atomic, Molecular and Optical Physics</i>, vol. 53, no. 14. IOP Publishing, 2020.","ista":"Vampa G, Lu J, You YS, Baykusheva DR, Wu M, Liu H, Schafer KJ, Gaarde MB, Reis DA, Ghimire S. 2020. Attosecond synchronization of extreme ultraviolet high harmonics from crystals. Journal of Physics B: Atomic, Molecular and Optical Physics. 53(14), 144003.","mla":"Vampa, Giulio, et al. “Attosecond Synchronization of Extreme Ultraviolet High Harmonics from Crystals.” <i>Journal of Physics B: Atomic, Molecular and Optical Physics</i>, vol. 53, no. 14, 144003, IOP Publishing, 2020, doi:<a href=\"https://doi.org/10.1088/1361-6455/ab8e56\">10.1088/1361-6455/ab8e56</a>.","apa":"Vampa, G., Lu, J., You, Y. S., Baykusheva, D. R., Wu, M., Liu, H., … Ghimire, S. (2020). Attosecond synchronization of extreme ultraviolet high harmonics from crystals. <i>Journal of Physics B: Atomic, Molecular and Optical Physics</i>. IOP Publishing. <a href=\"https://doi.org/10.1088/1361-6455/ab8e56\">https://doi.org/10.1088/1361-6455/ab8e56</a>"},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","oa_version":"Preprint","quality_controlled":"1","doi":"10.1088/1361-6455/ab8e56","issue":"14","volume":53,"month":"06","main_file_link":[{"url":"https://arxiv.org/abs/2001.09951","open_access":"1"}],"external_id":{"arxiv":["2001.09951"]},"article_number":"144003","publication_status":"published","publication_identifier":{"eissn":["1361-6455"],"issn":["0953-4075"]},"oa":1,"author":[{"last_name":"Vampa","full_name":"Vampa, Giulio","first_name":"Giulio"},{"full_name":"Lu, Jian","last_name":"Lu","first_name":"Jian"},{"full_name":"You, Yong Sing","last_name":"You","first_name":"Yong Sing"},{"first_name":"Denitsa Rangelova","id":"71b4d059-2a03-11ee-914d-dfa3beed6530","last_name":"Baykusheva","full_name":"Baykusheva, Denitsa Rangelova"},{"first_name":"Mengxi","full_name":"Wu, Mengxi","last_name":"Wu"},{"first_name":"Hanzhe","last_name":"Liu","full_name":"Liu, Hanzhe"},{"full_name":"Schafer, Kenneth J","last_name":"Schafer","first_name":"Kenneth J"},{"last_name":"Gaarde","full_name":"Gaarde, Mette B","first_name":"Mette B"},{"first_name":"David A","full_name":"Reis, David A","last_name":"Reis"},{"first_name":"Shambhu","full_name":"Ghimire, Shambhu","last_name":"Ghimire"}],"date_published":"2020-06-17T00:00:00Z","abstract":[{"lang":"eng","text":"The interaction of strong near-infrared (NIR) laser pulses with wide-bandgap dielectrics produces high harmonics in the extreme ultraviolet (XUV) wavelength range. These observations have opened up the possibility of attosecond metrology in solids, which would benefit from a precise measurement of the emission times of individual harmonics with respect to the NIR laser field. Here we show that, when high-harmonics are detected from the input surface of a magnesium oxide crystal, a bichromatic probing of the XUV emission shows a clear synchronization largely consistent with a semiclassical model of electron–hole recollisions in bulk solids. On the other hand, the bichromatic spectrogram of harmonics originating from the exit surface of the 200 μm-thick crystal is strongly modified, indicating the influence of laser field distortions during propagation. Our tracking of sub-cycle electron and hole re-collisions at XUV energies is relevant to the development of solid-state sources of attosecond pulses."}],"type":"journal_article","publisher":"IOP Publishing","extern":"1","scopus_import":"1","publication":"Journal of Physics B: Atomic, Molecular and Optical Physics","title":"Attosecond synchronization of extreme ultraviolet high harmonics from crystals","date_created":"2023-08-09T13:09:51Z","article_processing_charge":"No","status":"public","language":[{"iso":"eng"}],"arxiv":1},{"month":"07","volume":16,"issue":"7","doi":"10.1038/s41567-020-0887-8","quality_controlled":"1","oa_version":"None","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"chicago":"Biswas, Shubhadeep, Benjamin Förg, Lisa Ortmann, Johannes Schötz, Wolfgang Schweinberger, Tomáš Zimmermann, Liangwen Pi, et al. “Probing Molecular Environment through Photoemission Delays.” <i>Nature Physics</i>. Springer Nature, 2020. <a href=\"https://doi.org/10.1038/s41567-020-0887-8\">https://doi.org/10.1038/s41567-020-0887-8</a>.","ista":"Biswas S, Förg B, Ortmann L, Schötz J, Schweinberger W, Zimmermann T, Pi L, Baykusheva DR, Masood HA, Liontos I, Kamal AM, Kling NG, Alharbi AF, Alharbi M, Azzeer AM, Hartmann G, Wörner HJ, Landsman AS, Kling MF. 2020. Probing molecular environment through photoemission delays. Nature Physics. 16(7), 778–783.","ieee":"S. Biswas <i>et al.</i>, “Probing molecular environment through photoemission delays,” <i>Nature Physics</i>, vol. 16, no. 7. Springer Nature, pp. 778–783, 2020.","ama":"Biswas S, Förg B, Ortmann L, et al. Probing molecular environment through photoemission delays. <i>Nature Physics</i>. 2020;16(7):778-783. doi:<a href=\"https://doi.org/10.1038/s41567-020-0887-8\">10.1038/s41567-020-0887-8</a>","short":"S. Biswas, B. Förg, L. Ortmann, J. Schötz, W. Schweinberger, T. Zimmermann, L. Pi, D.R. Baykusheva, H.A. Masood, I. Liontos, A.M. Kamal, N.G. Kling, A.F. Alharbi, M. Alharbi, A.M. Azzeer, G. Hartmann, H.J. Wörner, A.S. Landsman, M.F. Kling, Nature Physics 16 (2020) 778–783.","apa":"Biswas, S., Förg, B., Ortmann, L., Schötz, J., Schweinberger, W., Zimmermann, T., … Kling, M. F. (2020). Probing molecular environment through photoemission delays. <i>Nature Physics</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41567-020-0887-8\">https://doi.org/10.1038/s41567-020-0887-8</a>","mla":"Biswas, Shubhadeep, et al. “Probing Molecular Environment through Photoemission Delays.” <i>Nature Physics</i>, vol. 16, no. 7, Springer Nature, 2020, pp. 778–83, doi:<a href=\"https://doi.org/10.1038/s41567-020-0887-8\">10.1038/s41567-020-0887-8</a>."},"date_updated":"2023-08-22T07:38:04Z","day":"01","keyword":["General Physics and Astronomy"],"_id":"13999","intvolume":"        16","year":"2020","article_type":"original","language":[{"iso":"eng"}],"status":"public","date_created":"2023-08-09T13:10:07Z","article_processing_charge":"No","page":"778-783","title":"Probing molecular environment through photoemission delays","publication":"Nature Physics","scopus_import":"1","extern":"1","publisher":"Springer Nature","type":"journal_article","date_published":"2020-07-01T00:00:00Z","abstract":[{"text":"Attosecond chronoscopy has revealed small but measurable delays in photoionization, characterized by the ejection of an electron on absorption of a single photon. Ionization-delay measurements in atomic targets provide a wealth of information about the timing of the photoelectric effect, resonances, electron correlations and transport. However, extending this approach to molecules presents challenges, such as identifying the correct ionization channels and the effect of the anisotropic molecular landscape on the measured delays. Here, we measure ionization delays from ethyl iodide around a giant dipole resonance. By using the theoretical value for the iodine atom as a reference, we disentangle the contribution from the functional ethyl group, which is responsible for the characteristic chemical reactivity of a molecule. We find a substantial additional delay caused by the presence of a functional group, which encodes the effect of the molecular potential on the departing electron. Such information is inaccessible to the conventional approach of measuring photoionization cross-sections. The results establish ionization-delay measurements as a valuable tool in investigating the electronic properties of molecules.","lang":"eng"}],"author":[{"full_name":"Biswas, Shubhadeep","last_name":"Biswas","first_name":"Shubhadeep"},{"first_name":"Benjamin","last_name":"Förg","full_name":"Förg, Benjamin"},{"last_name":"Ortmann","full_name":"Ortmann, Lisa","first_name":"Lisa"},{"first_name":"Johannes","last_name":"Schötz","full_name":"Schötz, Johannes"},{"first_name":"Wolfgang","full_name":"Schweinberger, Wolfgang","last_name":"Schweinberger"},{"first_name":"Tomáš","last_name":"Zimmermann","full_name":"Zimmermann, Tomáš"},{"first_name":"Liangwen","full_name":"Pi, Liangwen","last_name":"Pi"},{"last_name":"Baykusheva","full_name":"Baykusheva, Denitsa Rangelova","id":"71b4d059-2a03-11ee-914d-dfa3beed6530","first_name":"Denitsa Rangelova"},{"full_name":"Masood, Hafiz A.","last_name":"Masood","first_name":"Hafiz A."},{"first_name":"Ioannis","last_name":"Liontos","full_name":"Liontos, Ioannis"},{"last_name":"Kamal","full_name":"Kamal, Amgad M.","first_name":"Amgad M."},{"first_name":"Nora G.","last_name":"Kling","full_name":"Kling, Nora G."},{"last_name":"Alharbi","full_name":"Alharbi, Abdullah F.","first_name":"Abdullah F."},{"first_name":"Meshaal","full_name":"Alharbi, Meshaal","last_name":"Alharbi"},{"first_name":"Abdallah M.","full_name":"Azzeer, Abdallah M.","last_name":"Azzeer"},{"last_name":"Hartmann","full_name":"Hartmann, Gregor","first_name":"Gregor"},{"full_name":"Wörner, Hans J.","last_name":"Wörner","first_name":"Hans J."},{"first_name":"Alexandra S.","full_name":"Landsman, Alexandra S.","last_name":"Landsman"},{"full_name":"Kling, Matthias F.","last_name":"Kling","first_name":"Matthias F."}],"publication_identifier":{"eissn":["1745-2481"],"issn":["1745-2473"]},"publication_status":"published"}]