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Unraveling a Chemically Enhanced Photoswitch: Bridged Azobenzene
Author(s) -
Böckmann Marcus,
Doltsinis Nikos L.,
Marx Dominik
Publication year - 2010
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200907039
Subject(s) - photoswitch , azobenzene , ab initio , quantum yield , excited state , quantum , molecular dynamics , materials science , chemical physics , chemistry , computational chemistry , nanotechnology , photochemistry , molecule , physics , quantum mechanics , organic chemistry , fluorescence
Counterintuitively improved photoswitching properties of bridged azobenzene compared to the unbridged counterpart (see picture) were demonstrated recently. Mechanistic insights obtained from nonadiabatic ab initio molecular dynamics reveal that the bridge suitably preorients the phenyl rings and thus enhances the E → Z quantum yield and shortens the lifetime of the first excited state.