Photoresponsive behavior of dye-doped alchoxy-cyanobiphenyl LCs

Abstract

Dye-doped liquid crystals (LCs) exhibit significantly enhanced photoinduced reorientationcompared to undoped LCs. Although the reorientation behavior has been interpreted as a phenomenonbased on interaction between the dye molecules and the electric field of light, the effect of themolecular structure on the photoinduced reorientation and details of the reorientational mechanism arenot clear. Recently, we reported that several coumarin derivatives with long molecular length functionas efficient triggers for photoinduced reorientation of LCs. In this study, we investigatedphotoresponsive behavior of dye-doped alchoxy-cyanobiphenyl LCs.