含非线性光学单元侧链液晶共聚物的合成及极化膜的紫外研究  

Synthesis of Side Chain LC Copolymer with NLO Unit and the Study of Its Poling Film by UV

作　　者：黄智华[1] 杨春才[1] 汤心颐[1] 王化滨[1] 景遐斌[1] 

机构地区：[1]吉林大学化学系,中国科学院长春应用化学研究所,北京大学

出　　处：《高等学校化学学报》1994年第1期136-139,共4页Chemical Journal of Chinese Universities

摘　　要：通过自由基共聚合合成了含有高二阶非线性光学活性偶氮单元的侧链液晶共聚物。共聚物的液晶转变温度由ＤＳＣ测定，实验证明当偶氮单元含量超过４０ｍｏｌ％时，共聚物的液晶性消失。通过高压电场对该聚合物膜进行针尖电晕极化取向，并由紫外测试给出了聚合物膜的取向参数及其稳定性，对液晶聚合物的非线性光学性质进行了初步的研究。Azo-type nonmesogenic monomer and mesogenic monomer were synthesized.Copolymers were obtained using these monomers by radical polymerization.The phase transition temperatures of these copolymers were investigated by DSC,the result showed that the copolymer did not exhibit the mesomorphic nature in concentration of azo unit above 40 mol%.The polymeric film was poled by needle-electrode corona-onset poling at elevated temperature,the orientational order parameterφand its stability were estimated by UV measurement.This paper proceeded to an initial study for NLO property of liquid crystal polymer.

关 键 词：非线性光学 侧链 液晶高聚物 

分 类 号：O753.2[理学—晶体学]