摘要
合成出一组分子中含－ＣＨ２Ｏ－桥键的４－（ｔｒａｎｓ－４″－ｎ－烷基环已基甲氧基）－４′－氰基联苯液晶化合物，经ＤＳＣ测定了其相变温度范围，研究发现液晶分子中的吸电子端基有助于化合物呈现液晶相及增加液晶相的热稳定性；随分子中烷基链长的增加，有助于液晶呈现近晶相但液晶相的热稳定性降低；
s The liquid crystal compounds of 4-(4″- trans-n -alkylcyclohexane methoxy)-4'-cyanobiphenyl with -CH 2O- inter-ring linkage were Synthesized. The temperature ranges of liquid crystalline phase were measured by DSC . Electron withdrawing substituted group is helpful to the appearance of liquid crystalline and the thermostability of liquid crystalline .With the increasing of the length of alkyl chain ,smetic phase appears but the thermostability of liquid crystalline decreases .Cyclohexane enhances the thermostability of liquid crystalline .
出处
《郑州大学学报（自然科学版）》
CAS
1999年第1期84-87,共4页
Journal of Zhengzhou University (Natural Science)
基金
国家计委资助项目
