单酯基芳香醛及芳香腈类液晶的合成与液晶相研究  

The Synthesis and Mesophase Research of Liquid Crystals of Monoesteryl Aryl Aldehyde and Aryl Nitrile

作　　者：郑敏燕[1] 魏永生[1] 陈艳珍[1] 陈世亮[1] 聂红明[1] 

机构地区：[1]咸阳师范学院化学系,陕西咸阳712000

出　　处：《咸阳师范学院学报》2008年第6期27-29,共3页Journal of Xianyang Normal University

基　　金：陕西省教育厅自然科学基金项目(07JK426);咸阳师范学院科研基金项目(07XSYK219)

摘　　要：以对羟基苯甲醛、对羟基苯腈,与4-正丙基苯甲酸、4-正丙基联苯甲酸为主要原料,通过氯化、酯化等方法,合成了四个多环单酯基类液晶:4-正丙基苯甲酸-4′-氰基苯酚酯,4-正丙基苯甲酸-4′-醛基苯酚酯,4-(4-(4-正丙基联苯)酰氧基)苯甲醛,4-4-(4-(4-正丙基联苯)酰氧基)苯腈。产物结构经元素分析、IR及MS表征,化合物的液晶相通过DSC及POM(偏光显微镜)确定。结果表明其中2个化合物具有热致液晶性,呈典型的向列项纹影织构。With the n-propylbenzoic acid,n-propyldibenzoic acid and p-hydroxyl benzaldehyde,p-hydroxyl benzonitrile as main reactants, four liquid crystal compounds of multi-ring monoesteryl were synthesized by reactions of chloridating and esterifing.They were 4-n-propylbenzoic acid- 4′-cyanophenol ester,4-n-propylbenzoic acid- 4′-aldehyde phenol ester,4- （4- （4-propylphenyl）benzoyloxy）benzaldehyde,4- （4- （4-propylphenyl）benzoyloxy） benzonitrile, Their structures were identified by IR, MS, and elemental analysis. Their mesophase was measured by DSC and POM. Two of them had liquid crystalline property and showed obvious nematic schlieren textures.

关 键 词：酯基 芳香醛 芳香腈 热致液晶 织构 

分 类 号：O625.41[理学—有机化学]