Synthesis and Phase Behavior Studies of Two New Chiral Liquid Crystals of Schiff Base——The Influence of Intramolecular Hydrogen Bond on the Phase Behavior
TIAN Yan-qing,XING Pei-xiang,ZHAO Ying-ying and TANG Xin-yi (Department of Chemistry,Jilin University,Changchun,130023)SU Feng-yu,ZHAO Xiao-guang and ZHOU En-le (Changchun Institute of Applied Chemistry,Chinese Academy of Science,Changchun,130022)
摘 要:
Two new chiral liquid crystals of schiff-base type have been synthesized.This series of compounds contain α-chloro acidic ester chain prepared from commercially available L-valine.Both of the compounds exhibit tilted smectic phases;their phase transitions were studied using DSC and polarized optical microscopy;the influence of intramolecular hydrogen bonds on the phase behavior was studied as well.