摘要
以单体双－（３－甲氧基－４－羟基苄叉）－４，４＇－二亚胺基苯与α，ω－二溴烷，采用相转移催化聚醚化法合成７种主链型液晶聚甲亚胺醚，用１ＨＮＭＲ、ＩＲ、ＵＶ、元素分析及热台偏光显微镜、ＤＳＣ和ＷＡＸＤ对聚合物的结构和液晶行为进行了表征。熔点和清亮点随间隔基数（ｎ）改变，并有奇偶效应，呈现锯齿形变化规律。
In this paper,seven main chain thermotropic polyazomethineethers (SAn, n=3～8are synthesized from bis-(3-methoxy-4-hydroxybenzylidene)-4,4'-diimdophenyl.(BISPHENOL)and α,ω-dibromoalkane by phase-transfer-catalysis polyetherification reaction.Their structures and liquid crystalline properties have been characterized by ￣1H NMR, IR, UV,elementary analysis, polarized microscopy with a hot stage, DSC and X-ray diffractions. Their melting temperature and clearing temperature are affected by the number of methylene groups in the flexible spacer and the usual odd-even effect is observed.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1994年第2期299-302,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
中国科学院化学研究所高分子物理联合开放实验室科学基金
关键词
相转移催化
液晶高聚物
聚甲亚胺醚
Phase-transfer-catalysis
Liquid crystalline polymers
Polyazomethineethers
Bis-(3-methoxy-4-hydroxybenzylidene)-4,4'-diimidobenzene
