新的液晶性酚类化合物的合成  

Synthesis of Novel Liquid Crystalline Phenolic Compounds

作　　者：宁超峰[1] 郭凯[1] 郑世军[1] 李自法[1] 

机构地区：[1]郑州大学材料工程系

出　　处：《郑州大学学报（自然科学版）》1999年第1期80-83,93,共5页Journal of Zhengzhou University (Natural Science)

基　　金：国家自然科学基金

摘　　要：合成了一系列新的液晶性酚类化合物，通过元素分析，ＩＲ，１Ｈ－ＮＭＲ和ＭＳ等测试手段对其结构进行了表征．采用ＤＳＣ和偏光显微镜等方法研究了它们的液晶性和相变温度．发现所合成的化合物有三种具有热致液晶性，其中两种能形成向列相或近晶相液晶，并发现了这三种化合物的熔点和清亮点均随分子中末端烷氧基碳原子数的增加而降低．A series of novel liquid crystalline phenolic compounds were synthsized. The structure of these compounds were characterized by elemental analysis, IR measurement, NMR spetroscopy and mass spectrography. Their liquid crystall properties and phase transition temperatures were also studied by DSC and polarizing microscope with heating stage.It is found that all the compounds went to liquid crystal phase when heated to their melting point. The focal-conic texture,schlieren texture and threaded texture can be observed. The phase transition temperature of the all compounds changed regularly with the carbon numbers of the alkoxy increased.

关 键 词：液晶化合物 热致液晶 对苯二酚 酚类化合物 合成 

分 类 号：O625.311[理学—有机化学] O753.2[理学—化学]