文献类型：期刊文献

中文题名：噻二唑类弯曲型液晶分子的合成和性能研究

英文题名：Synthesis and Property of Bent-Core Liquid Crystals with Thiadiazole

作者：李双全[1];沈冬[1]

机构：[1]华东理工大学理学院化学物理研究室,上海200237

年份：2011

卷号：26

期号：4

起止页码：421

中文期刊名：液晶与显示

外文期刊名：Chinese Journal of Liquid Crystals and Displays

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD_E2011_2012】；

基金：国家自然科学基金(No.60878047)

语种：中文

中文关键词：1;,3;,4-噻二唑;弯曲型分子;向列相

外文关键词：1,3,4-thiadiazole; bent-core molecule; N phase

摘要：合成了两个系列以1,3,4-噻二唑为中心基团的弯曲型分子,结合偏光显微熔点仪(POM)观察和差示量热扫描法(DSC)研究了它们的液晶性能。研究发现,这两类弯曲型分子都会出现N相。其中,对称型五环酯类噻二唑弯曲型分子的熔点都较高,清亮点均超过360℃;含烯丙基非对称噻二唑类弯曲型分子熔点和清亮点温度大幅度降低,N相的温区较宽,以庚基为端基链的弯曲型分子出现N相的温度区间超过120℃。
Two series of bent-core liquid crystals with 1,3,4- thiadiazole as the center unit were synthesized, their liquid crystalline properties were studied by POM and DSC. It is found that both of these two serie thiadiazole compounds exhibite N phase. Among them, the symmetric five benzene ring thiadiazole ester compounds have rather high melting points, the clearing temperatures are more than 360 °C. The melting points and clearing temperatures of the asymmetric thiadiazole molecules with allyl terminal chains are significantly reduced, and the bent-core molecule with heptyl as terminal groups shows N phase at a very wide temperature range （〉120 °C）.