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Photodynamic Chiral Molecular Switches with Thermal Stability: From Reflection Wavelength Tuning to Handedness Inversion of Self‐Organized Helical Superstructures
Author(s) -
Li Yannian,
Xue Chenming,
Wang Mengfei,
Urbas Augustine,
Li Quan
Publication year - 2013
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.201306396
Subject(s) - dihedral angle , dopant , materials science , wavelength , inversion (geology) , liquid crystal , crystallography , axial symmetry , thermal stability , chirality (physics) , thermal , point reflection , optics , molecular physics , optoelectronics , doping , chemistry , condensed matter physics , chiral symmetry breaking , molecule , physics , symmetry breaking , organic chemistry , paleontology , hydrogen bond , structural basin , quantum mechanics , meteorology , nambu–jona lasinio model , biology
A good turn : Three compounds that bear two axially chiral bridged binaphthyl units were developed as photodynamic chiral dopants for nematic liquid crystals. For compounds with suitable bridge lengths, a change in the dihedral angle induced a switch of the binaphthyl units from the cisoid to the transoid form upon UV irradiation, which led to an inversion of the handedness of the helices.