화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals, Vol.495, 686-699, 2008
Effect of Different Dopants on Polymer Cholesteric Liquid Crystal Flakes
Two types of dopants are incorporated into polymer cholesteric liquid crystal (PCLC) materials to change their dielectric properties. Conductive dopants consisting of either carbon-based or metallic particles show large increases in composite conductivity with percolation thresholds of from 0.4 vol% to 30 vol%, depending on the size and shape of the dopant particles. Inorganic insulating dopants change the dielectric constant from 2 (neat PCLC) to <10 at dopant levels of similar to 30vol%, accompanied by an increase in density. These composites offer opportunities for use of PCLC's as particles or flakes in reflective displays.