Irradiation‐Wavelength Directing Circularly Polarized Luminescence in Self‐Organized Helical Superstructures Enabled by Hydrogen‐Bonded Chiral Fluorescent Molecular Switches
作者:Yanrong He、Shu Zhang、Hari Krishna Bisoyi、Jinghui Qiao、Hong Chen、JingJing Gao、Jinbao Guo、Quan Li
DOI:10.1002/anie.202111344
日期:2021.12.20
turning-off and the polarization inversion of circularlypolarizedluminescence signals is obtained in the corresponding photostationary state of the same helical cholesteric superstructure constructed from the light-driven hydrogen bonded chiral fluorescent molecular switch, which derives from the different conversion ratio of Z/E photoisomerization of the switch upon different light irradiations.
Effects of terminal chain length in hydrogen-bonded chiral switches on phototunable behavior of chiral nematic liquid crystals: helicity inversion and phase transition
作者:Dengwei Fu、Juntao Li、Jie Wei、Jinbao Guo
DOI:10.1039/c5sm00128e
日期:——
series of photoresponsive chiralswitches are fabricated by a facile hydrogen-bonded (H-bonded) assembly method, in which the binaphthyl azobenzene molecule is used as the proton acceptor, and binaphthyl acids with opposite chiral configuration are proton donors. We find that the helicaltwistedpower of H-bonded chiralswitches and the helical handedness of induced chiral nematic liquid crystals (N*-LCs)