{"volume":4,"page":"230-234","oa":1,"OA_place":"repository","publication_identifier":{"eissn":["1748-3395"],"issn":["1748-3387"]},"external_id":{"arxiv":["0901.1139"],"pmid":["19350032"]},"quality_controlled":"1","month":"04","scopus_import":"1","_id":"18031","title":"Mechanically controlled binary conductance switching of a single-molecule junction","publication":"Nature Nanotechnology","arxiv":1,"type":"journal_article","date_updated":"2025-01-03T10:42:35Z","date_created":"2024-09-09T13:53:36Z","day":"01","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_type":"letter_note","publication_status":"published","issue":"4","abstract":[{"lang":"eng","text":"Molecular-scale components are expected to be central to the realization of nanoscale electronic devices1,2,3. Although molecular-scale switching has been reported in atomic quantum point contacts4,5,6, single-molecule junctions provide the additional flexibility of tuning the on/off conductance states through molecular design. To date, switching in single-molecule junctions has been attributed to changes in the conformation or charge state of the molecule7,8,9,10,11,12. Here, we demonstrate reversible binary switching in a single-molecule junction by mechanical control of the metal–molecule contact geometry. We show that 4,4'-bipyridine–gold single-molecule junctions can be reversibly switched between two conductance states through repeated junction elongation and compression. Using first-principles calculations, we attribute the different measured conductance states to distinct contact geometries at the flexible but stable nitrogen–gold bond: conductance is low when the N–Au bond is perpendicular to the conducting π-system, and high otherwise. This switching mechanism, inherent to the pyridine–gold link, could form the basis of a new class of mechanically activated single-molecule switches."}],"oa_version":"Preprint","doi":"10.1038/nnano.2009.10","article_processing_charge":"No","publisher":"Springer Nature","status":"public","language":[{"iso":"eng"}],"citation":{"chicago":"Quek, Su Ying, Maria Kamenetska, Michael L. Steigerwald, Hyoung Joon Choi, Steven G. Louie, Mark S. Hybertsen, J. B. Neaton, and Latha Venkataraman. “Mechanically Controlled Binary Conductance Switching of a Single-Molecule Junction.” <i>Nature Nanotechnology</i>. Springer Nature, 2009. <a href=\"https://doi.org/10.1038/nnano.2009.10\">https://doi.org/10.1038/nnano.2009.10</a>.","ista":"Quek SY, Kamenetska M, Steigerwald ML, Choi HJ, Louie SG, Hybertsen MS, Neaton JB, Venkataraman L. 2009. Mechanically controlled binary conductance switching of a single-molecule junction. Nature Nanotechnology. 4(4), 230–234.","short":"S.Y. Quek, M. Kamenetska, M.L. Steigerwald, H.J. Choi, S.G. Louie, M.S. Hybertsen, J.B. Neaton, L. Venkataraman, Nature Nanotechnology 4 (2009) 230–234.","mla":"Quek, Su Ying, et al. “Mechanically Controlled Binary Conductance Switching of a Single-Molecule Junction.” <i>Nature Nanotechnology</i>, vol. 4, no. 4, Springer Nature, 2009, pp. 230–34, doi:<a href=\"https://doi.org/10.1038/nnano.2009.10\">10.1038/nnano.2009.10</a>.","apa":"Quek, S. Y., Kamenetska, M., Steigerwald, M. L., Choi, H. J., Louie, S. G., Hybertsen, M. S., … Venkataraman, L. (2009). Mechanically controlled binary conductance switching of a single-molecule junction. <i>Nature Nanotechnology</i>. Springer Nature. <a href=\"https://doi.org/10.1038/nnano.2009.10\">https://doi.org/10.1038/nnano.2009.10</a>","ieee":"S. Y. Quek <i>et al.</i>, “Mechanically controlled binary conductance switching of a single-molecule junction,” <i>Nature Nanotechnology</i>, vol. 4, no. 4. Springer Nature, pp. 230–234, 2009.","ama":"Quek SY, Kamenetska M, Steigerwald ML, et al. Mechanically controlled binary conductance switching of a single-molecule junction. <i>Nature Nanotechnology</i>. 2009;4(4):230-234. doi:<a href=\"https://doi.org/10.1038/nnano.2009.10\">10.1038/nnano.2009.10</a>"},"author":[{"full_name":"Quek, Su Ying","last_name":"Quek","first_name":"Su Ying"},{"first_name":"Maria","full_name":"Kamenetska, Maria","last_name":"Kamenetska"},{"last_name":"Steigerwald","full_name":"Steigerwald, Michael L.","first_name":"Michael L."},{"first_name":"Hyoung Joon","last_name":"Choi","full_name":"Choi, Hyoung Joon"},{"last_name":"Louie","full_name":"Louie, Steven G.","first_name":"Steven G."},{"full_name":"Hybertsen, Mark S.","last_name":"Hybertsen","first_name":"Mark S."},{"last_name":"Neaton","full_name":"Neaton, J. B.","first_name":"J. B."},{"orcid":"0000-0002-6957-6089","first_name":"Latha","last_name":"Venkataraman","full_name":"Venkataraman, Latha","id":"9ebb78a5-cc0d-11ee-8322-fae086a32caf"}],"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/0901.1139"}],"extern":"1","intvolume":"         4","date_published":"2009-04-01T00:00:00Z","year":"2009","OA_type":"green","pmid":1}