Reversible Photomechanical Switching of Individual Engineered Molecules at a Metallic Surface Export

@article{citeulike:4949223, abstract = {We have observed reversible light-induced mechanical switching for individual organic molecules bound to a metal surface. Scanning tunneling microscopy (STM) was used to image the features of individual azobenzene molecules on Au(111) before and after reversibly cycling their mechanical structure between trans and cis states using light. Azobenzene molecules were engineered to increase their surface photomechanical activity by attaching varying numbers of tert-butyl (TB) ligands (\“legs\”) to the azobenzene phenyl rings. STM images show that increasing the number of TB legs \“lifts\” the azobenzene molecules from the substrate, thereby increasing molecular photomechanical activity by decreasing molecule-surface coupling.}, author = {Comstock, Matthew J. and Levy, Niv and Kirakosian, Armen and Cho, Jongweon and Lauterwasser, Frank and Harvey, Jessica H. and Strubbe, David A. and Fr\'{e}chet, Jean M. J. and Trauner, Dirk and Louie, Steven G. and Crommie, Michael F.}, citeulike-article-id = {4949223}, citeulike-linkout-0 = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000099000003038301000001&idtype=cvips&gifs=yes}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRL/v99/e038301}, citeulike-linkout-2 = {http://dx.doi.org/10.1103/PhysRevLett.99.038301}, doi = {10.1103/PhysRevLett.99.038301}, journal = {Physical Review Letters}, keywords = {motors, photoswitchable, surface}, number = {3}, pages = {038301+}, posted-at = {2009-06-25 01:21:50}, priority = {2}, publisher = {APS}, title = {Reversible Photomechanical Switching of Individual Engineered Molecules at a Metallic Surface}, url = {http://dx.doi.org/10.1103/PhysRevLett.99.038301}, volume = {99}, year = {2007} }

TY - JOUR ID - citeulike:4949223 L3 - citeulike-article-id:4949223 N2 - We have observed reversible light-induced mechanical switching for individual organic molecules bound to a metal surface. Scanning tunneling microscopy (STM) was used to image the features of individual azobenzene molecules on Au(111) before and after reversibly cycling their mechanical structure between trans and cis states using light. Azobenzene molecules were engineered to increase their surface photomechanical activity by attaching varying numbers of tert-butyl (TB) ligands (“legs”) to the azobenzene phenyl rings. STM images show that increasing the number of TB legs “lifts” the azobenzene molecules from the substrate, thereby increasing molecular photomechanical activity by decreasing molecule-surface coupling. IS - 3 JF - Physical Review Letters TI - Reversible Photomechanical Switching of Individual Engineered Molecules at a Metallic Surface PB - APS VL - 99 SP - 038301 KW - motors KW - photoswitchable KW - surface AU - Comstock, Matthew AU - Levy, Niv AU - Kirakosian, Armen AU - Cho, Jongweon AU - Lauterwasser, Frank AU - Harvey, Jessica AU - Strubbe, David AU - Fr\'{e}chet, Jean AU - Trauner, Dirk AU - Louie, Steven AU - Crommie, Michael PY - 2007/// UR - http://dx.doi.org/10.1103/PhysRevLett.99.038301 ER -