Low and Wide Phase Transition Temperature Dimesogenic Compounds Consisting of a Cholesteryl and 4-（trans-4-n-Alkylcyclohexyl）phenoxy Mesogens  

作　　者：张春波 丛志奇 尹炳柱 田英载 久保勘二 

机构地区：[1]Key Laboratory of Organism Functional Factors of the Changbai Mountain, Yanbian University, Ministry of Education, Yanji, Jilin 133002, China [2]Department of Chemistry, College of Science of Konkuk University, Seoul, 143-701, Korea [3]Institute of Advanced Material Study, Kyusyu University, Fukuoka 816-8580, Japan

出　　处：《Chinese Journal of Chemistry》2006年第3期435-438,共4页中国化学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （No. 20462001）.

摘　　要：Unsymmetrical dimesogenic compounds with cholesteryl and 4-（trans-4-n-alkylcyclohexyl）phenoxy parts were synthesized by condensation of cholester-3-yl 6-bromohexanoate with appropriate 4-（trans-4-n-alkylcyclohexyl）- phenols. Structures and thermal phase behaviour of these dimesogenic compounds have been confirmed by IR, IH NMR, elemental analysis, DSC, polarity microscopy and XRD measurements. Their thermal phase behaviour was significantly different with that of other cholesterol-based dimesogens while they exhibited low and wide phase transition temperature.Unsymmetrical dimesogenic compounds with cholesteryl and 4-（trans-4-n-alkylcyclohexyl）phenoxy parts were synthesized by condensation of cholester-3-yl 6-bromohexanoate with appropriate 4-（trans-4-n-alkylcyclohexyl）- phenols. Structures and thermal phase behaviour of these dimesogenic compounds have been confirmed by IR, IH NMR, elemental analysis, DSC, polarity microscopy and XRD measurements. Their thermal phase behaviour was significantly different with that of other cholesterol-based dimesogens while they exhibited low and wide phase transition temperature.

关 键 词：liquid crystal dimesogen cholesteryl 4-（trans-4-n-alkylcyclohexyl）phenol chiral nematic phase 

分 类 号：O753.2[理学—晶体学]