[{"year":"2023","type":"journal_article","month":"10","publisher":"Elsevier","day":"01","OA_type":"free access","language":[{"iso":"eng"}],"date_updated":"2026-05-18T09:19:40Z","ddc":["540"],"status":"public","article_number":"114964","publication":"Journal of Photochemistry and Photobiology A: Chemistry","article_processing_charge":"No","intvolume":"       444","publication_identifier":{"issn":["1010-6030"],"eissn":["1873-2666"]},"volume":444,"article_type":"original","_id":"21821","OA_place":"publisher","scopus_import":"1","author":[{"last_name":"Sandlass","first_name":"Sara","full_name":"Sandlass, Sara"},{"full_name":"Stricker, Friedrich J","id":"7aca2cfc-46cf-11f0-abd3-8c96b5186745","first_name":"Friedrich J","last_name":"Stricker"},{"first_name":"Daniel","last_name":"Fragoso","full_name":"Fragoso, Daniel"},{"full_name":"de Alaniz, Javier Read","first_name":"Javier Read","last_name":"de Alaniz"},{"full_name":"Gordon, Michael J.","first_name":"Michael J.","last_name":"Gordon"}],"date_created":"2026-05-06T10:57:28Z","extern":"1","doi":"10.1016/j.jphotochem.2023.114964","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","oa":1,"date_published":"2023-10-01T00:00:00Z","citation":{"ieee":"S. Sandlass, F. J. Stricker, D. Fragoso, J. R. de Alaniz, and M. J. Gordon, “Effect of polymer host matrix on multi-stage isomerization kinetics of DASA photochromes,” <i>Journal of Photochemistry and Photobiology A: Chemistry</i>, vol. 444. Elsevier, 2023.","ista":"Sandlass S, Stricker FJ, Fragoso D, de Alaniz JR, Gordon MJ. 2023. Effect of polymer host matrix on multi-stage isomerization kinetics of DASA photochromes. Journal of Photochemistry and Photobiology A: Chemistry. 444, 114964.","apa":"Sandlass, S., Stricker, F. J., Fragoso, D., de Alaniz, J. R., &#38; Gordon, M. J. (2023). Effect of polymer host matrix on multi-stage isomerization kinetics of DASA photochromes. <i>Journal of Photochemistry and Photobiology A: Chemistry</i>. Elsevier. <a href=\"https://doi.org/10.1016/j.jphotochem.2023.114964\">https://doi.org/10.1016/j.jphotochem.2023.114964</a>","chicago":"Sandlass, Sara, Friedrich J Stricker, Daniel Fragoso, Javier Read de Alaniz, and Michael J. Gordon. “Effect of Polymer Host Matrix on Multi-Stage Isomerization Kinetics of DASA Photochromes.” <i>Journal of Photochemistry and Photobiology A: Chemistry</i>. Elsevier, 2023. <a href=\"https://doi.org/10.1016/j.jphotochem.2023.114964\">https://doi.org/10.1016/j.jphotochem.2023.114964</a>.","mla":"Sandlass, Sara, et al. “Effect of Polymer Host Matrix on Multi-Stage Isomerization Kinetics of DASA Photochromes.” <i>Journal of Photochemistry and Photobiology A: Chemistry</i>, vol. 444, 114964, Elsevier, 2023, doi:<a href=\"https://doi.org/10.1016/j.jphotochem.2023.114964\">10.1016/j.jphotochem.2023.114964</a>.","short":"S. Sandlass, F.J. Stricker, D. Fragoso, J.R. de Alaniz, M.J. Gordon, Journal of Photochemistry and Photobiology A: Chemistry 444 (2023).","ama":"Sandlass S, Stricker FJ, Fragoso D, de Alaniz JR, Gordon MJ. Effect of polymer host matrix on multi-stage isomerization kinetics of DASA photochromes. <i>Journal of Photochemistry and Photobiology A: Chemistry</i>. 2023;444. doi:<a href=\"https://doi.org/10.1016/j.jphotochem.2023.114964\">10.1016/j.jphotochem.2023.114964</a>"},"abstract":[{"lang":"eng","text":"Molecular photoswitches provide a means for imparting synthetic structures with intrinsically logical and highly\r\ntunable photoresponsive properties. One variety of organic photoswitches known as Donor-Acceptor Stenhouse\r\nAdducts, or DASAs, are promising candidates for next generation light responsive materials because of their\r\nunique ability to stabilize three photochemically distinct isomeric states in solution, while their counterparts are\r\nstrictly limited to binary state behavior. In this work, we show how polymethacrylate host matrices shift the\r\nenergetic landscape of DASA relative to solution, prohibiting accumulation of an intermediate third isomeric\r\nstate by decelerating critical steps in the photoswitching mechanism. Specifically, we employ a dual-wavelength,\r\nphase locked detection scheme to probe thermal isomerizations in the switching process that occur at fast (~ms)\r\ntime scales that are inaccessible by standard UV–Vis spectroscopic techniques. The results of this study provide\r\nvaluable insight into the mechanism of multistate DASA reactivity and establish the foundation necessary to\r\nguide future efforts in offsetting kinetic matrix effects to enable dynamic, three state photoswitching in polymeric\r\nhosts. "}],"oa_version":"Published Version","title":"Effect of polymer host matrix on multi-stage isomerization kinetics of DASA photochromes","publication_status":"published","main_file_link":[{"url":"https://doi.org/10.1016/j.jphotochem.2023.114964","open_access":"1"}],"quality_controlled":"1"}]