含甲氧基悬挂基聚甲亚胺醚的合成及其液晶行为  

Synthesis and Liquid Crystalline Behavior of Polyazomethineethers Containing Pendant Groups of Methoxy

作　　者：张其震[1] 李小放[1] 杨兆荷[1] 

机构地区：[1]山东大学化学系,山东大学晶体所

出　　处：《高等学校化学学报》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

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.

关 键 词：相转移催化 液晶高聚物 聚甲亚胺醚 

分 类 号：O632.32[理学—高分子化学]