Synthesis of chiral compounds bearing photoresponsive diarylethene moieties crosslinked with axially chiral binaphthyl moieties and construction of asymmetric liquid crystal field using the chiral compound as a chiral dopant.

Abstract

It is well known that N*-LC can be prepared by adding a chiral compound into N-LC. In this study, we synthesized various types of axially chiral binaphthyl derivatives crosslinked with the diarylethene moieties and used them as chiral dopants to prepare photoresponsive N*-LCs. We investigated the photochemical switching behavior and fatigue resistance of the N*-LCs through measurements of polarized optical microscope (POM), circular dichroism (CD) spectra and ultraviolet-visible absorption (UV-Vis) spectra.