Photoluminescence intensity and polarization modulation of a light emitting liquid crystal via reversible isomerization of an α-cyanostilbenic derivative
摘要:
We found reversible photo thermal isomerization of the alpha-cyanostilbenic derivative (Z)-2-(4-aminophenyl)-3-(4-dodecyloxy)phenyl)-acrylonitrile, (Z)-CN-APHP, which is accompanied by a large decrease in compatibility when mixed with a nematic liquid crystal. Moreover, a novel optical switch using a CN-APHP doped liquid crystal that emits partially linearly polarized light is investigated. By controlling the trans-cis isomerization of CN-APHP, it is possibly to modulate not only photoluminescence intensity but also its polarization. This could open possibilities to design improved optical devices. (C) 2016 Elsevier Ltd. All rights reserved.