摘要
本文合成了两种单臂脂环18-冠-6液晶,羟甲基18-冠-6分别和4-(4′-正丁氧基苯甲酰氧基)苯甲酰氯或氯甲酸胆甾醇醋反应得到两种目标物,用DSC和偏光显微镜测定其相变温度,前者相变温度是T_(KN)4.0℃和T_(NI)33.5℃,后者相变温度T_(KS)-22.4℃,T_(SN)6.8℃,T_(NI)40.4℃,用等克分子的硬脂酸和该冠醚液晶制成LB膜,观察到Y型LB膜的特征。
Two novel monoarmed alicyclic 18-crown-6 liquid crystals were designed and synthesized in an attempt to lower the phase transition temperature of crown ether liquid crystal. They were synthesized by treating hydroxymethyl 18-crown-6 with chloride 4-(4'-n -butoxybenzoyloxy) benzoylate or cholesteryl chlorocarbonate respectively. The phase transition temperatures were determined by DSC and polarized microscopy were found to be as follows: TKN, 4.0℃; TNI, 33.5℃ for the former and TKS, -22.4℃; TSN, 6.8℃; TNI, 40.4℃ for the latter. The characteristics of Y-type LB film, were observed from the LB film prepared with equimolecular stearic acid and the new liquid crystal.
出处
《有机化学》
SCIE
CAS
CSCD
北大核心
1995年第1期52-56,共5页
Chinese Journal of Organic Chemistry
基金
国家自然科学基金
关键词
冠醚
单臂
液晶
合成
crown ether, moaoarm, liquid crystal, synthesis
