对二氨基二苯型芳酰胺类液晶化合物的合成与表征  

Synthesis and characterization of unsaturated liquid crystalline compounds based on p-diaminophenyl aramid

作　　者：刘秀英[1] 王玉阳[1] 

机构地区：[1]河北大学化学与环境科学院,河北保定071002

出　　处：《化学研究与应用》2010年第3期347-349,共3页Chemical Research and Application

基　　金：河北省自然科学基金资助项目(B2005000108)

摘　　要：Two unsaturated liquid crystalline compounds based on diamine:N,N′-[oxybis(4,1-phenylene)]bis{4-[2-(allyloxy)ethoxy]benzamide} and N,N′-[methylenebis(4,1-phenylene)]bis{4-[2-(allyloxy)ethoxy]benzamide}were synthesized from 4,4′-diaminodiphenylether(DDE) and 4,4’-diaminodiphenylmethane(DDM),allyl-2-hydroxyethyl ether,4-hydroxy ethyl benzoate by the procedure of acylchlorination and esterification.The structures and liquid crystalline behaviours were investigated by DSC,FTIR,1H NMR,POM and XRD.The results showed that these compounds were all smectic phase and had a higher liquid temperature range,in which the melting points of two compounds were 240 and 220℃,respectively,and their clear points were all higher than 300℃.Two unsaturated liquid crystalline compounds based on diamine ： N, N＇- [ oxybis （ 4,1 -phenylene ） ]bis 14- [ 2 - （aUyloxy） ethoxy ] benzamide ） and N, N＇- [ methylenebis （4,1 -phenylene） ]bis { 4- [ 2- （allyloxy） ethoxy ] benzamide } were synthesized from 4, 4＇-diaminodiphenylether （DDE） and 4,4＇ -diaminodiphenylmethane （ DDM ）, allyl-2-hydroxyethyl ether, 4-hydroxy ethyl benzoate by the procedure of acylchlorination and esterification. The structures and liquid crystalline behaviours were investigated by DSC, FrlR,1HNMR, POM and XRD. The results showed that these compounds were all smeetic phase and had a higher liquid temperature range,in which the melting points of two compounds were 240 and 220℃, respectively, and their clear points were all higher than 300℃.

关 键 词：液晶 芳酰胺 对羟基苯甲酸乙酯 

分 类 号：O633.13[理学—高分子化学]