Synthesis and helical twisting property of polymerizable chiral dopant with temperature-dependent solubility in liquid crystal  

作　　者：Wei Huang Yu Bo Cao Xiao Guang Zhang Fa Sheng Li Huai Yang 

机构地区：[1]Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China [2]Beijing Yetop Liquid Crystal Materials Co., Ltd., Beijing 101500, China

出　　处：《Chinese Chemical Letters》2009年第7期873-876,共4页中国化学快报（英文版）

基　　金：supported by the National Basic Research Program of China(No.2007CB613301);the National Natural Science Foundation(No.20674005);the Program of Beijing Municipal Science and Technology(No.Y0405004040121).

摘　　要：In this study, right-handed dicinnamate isosorbide was synthesized via the esterification reaction betweefi optically active isosorbide and cinnamate. The chiral dopant was characterized by FT-IR, ^1H NMR, elemental analysis, SEM, UV absorption spectrum. After dissolving in a nematic liquid crystal mixture, the chiral dopant exhibited a temperature-dependent solubility in the chiral nematic liquid crystal mixture. Meanwhile, a relatively high value of helical twisting power of the polymerizable chiral dopant was determined. The results show that the chiral dopant has great potential in achieving a polymer stabilized chiral nematic liquid crystal film with a broad-band selective reflection. C 2009 Huai Yang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.In this study, right-handed dicinnamate isosorbide was synthesized via the esterification reaction betweefi optically active isosorbide and cinnamate. The chiral dopant was characterized by FT-IR, ^1H NMR, elemental analysis, SEM, UV absorption spectrum. After dissolving in a nematic liquid crystal mixture, the chiral dopant exhibited a temperature-dependent solubility in the chiral nematic liquid crystal mixture. Meanwhile, a relatively high value of helical twisting power of the polymerizable chiral dopant was determined. The results show that the chiral dopant has great potential in achieving a polymer stabilized chiral nematic liquid crystal film with a broad-band selective reflection. C 2009 Huai Yang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关 键 词：Chiral dopant Temperature-dependent solubility Liquid crystal Helical twisting power 

分 类 号：O753.2[理学—晶体学] TN304.21[电子电信—物理电子学]