新型胆甾型液晶的合成及其侧链取代基对介晶性的影响

SYNTHESIS OF A NEW CHOLESTERIC LIQUID CRYSTAL AND STUDY ON THE EFFECT OF SUBSTITUTIONAL GROUP ON MESOMORPHOUS BEHAVIOR

本文设计、合成了一种新型胆甾型液晶，３－溴－４－辛氧基苯甲酸胆甾醇酯．通过示差扫描量热法（ＤＳＣ）和偏光显微镜研究，该化合物在１３９～１５３℃呈近晶相，１５３～１８４℃呈胆甾相．并对取代基溴原子对介晶性的影响进行了讨论．

The design and synthesis of a new cholesteric liquid crystal, 3 bromo 4 octanoxyl benzoate cholesteryl, is reported in this paper. The study of DSC and polarized microscope shows that this liquid crystal has melting point and clearing point of 139℃ and 184℃ respectively. The effect of substitutional group on the mesomorphous behavior is also discussed.