A Study of Photosensitive Chiral Compounds for Cholesteric Liquid Crystal

Abstract

We have investigated manufacturing the color filter for liquid crystal display using cholesteric liquid crystal with photosensitive chiral compounds. We selected the (E)-cinnamates of isosorbide or isomannide as photosensitive chiral compounds because the HTPs(Helical Twisting Power) before photo-irradiation were similarly high. On the other hand, after photo-irradiation, the HTP of isosorbide derivative was lower than the HTP of isomannide derivative. We synthesized all geometric isomers of these compounds and obtained HTPs.