首页 | 本学科首页   官方微博 | 高级检索  
     检索      

含胆固醇和 4-(反式-正烷基环己基)苯甲酸结构单元的双液晶基元液晶化合物的合成及其性质
引用本文:于海波a 侯瑞斌a 陈铁a 尹炳柱a Muhammad Jamil,田英载b.含胆固醇和 4-(反式-正烷基环己基)苯甲酸结构单元的双液晶基元液晶化合物的合成及其性质[J].中国化学,2009,27(7):1401-1405.
作者姓名:于海波a 侯瑞斌a 陈铁a 尹炳柱a Muhammad Jamil  田英载b
作者单位:a 延边大学长白山生物功能因子教育部重点实验室,延吉 133002 ;b 韩国建国大学校理科大学化学系,首尔,韩国 143-701 ;
摘    要:本文合成了一系列含有胆固醇和4-(反式-正烷基环己基)苯甲酸结构单元的新型双液晶基元液晶化合物。这些化合物中两个介晶基元是利用不同长度的氧烷酰基连接在一起。利用FT-IR、MS、1H NMR、POM、DSC 表证了所得化合物的结构和介晶性,并选择几种双液晶基元液晶测定了它们的机械黏度和在主体液晶中的螺旋扭曲力(HTP)。结果表明,绝大多数化合物显示较低相变温度的胆甾相(N*),并且被选择的化合物的平均机械黏度和螺旋扭曲力类似于或优于胆甾醇任酸酯。

关 键 词:胆甾醇  4-(反式-正烷基环己基)苯甲酸  双液晶基元液晶  螺旋扭曲力    手性添加剂
收稿时间:2008-6-2
修稿时间:2008-12-29

Synthesis and Properties of Dimesogenic Compounds Containing Cholesterol and 4‐(trans‐4‐n‐Alkylcyclohexyl)‐benzoic Acid Moieties
Haibo YU,Ruibin HOU,Tie CHEN,Bingzhu YIN,Jamil MUHAMMAD,Youngjae JEON.Synthesis and Properties of Dimesogenic Compounds Containing Cholesterol and 4‐(trans‐4‐n‐Alkylcyclohexyl)‐benzoic Acid Moieties[J].Chinese Journal of Chemistry,2009,27(7):1401-1405.
Authors:Haibo YU  Ruibin HOU  Tie CHEN  Bingzhu YIN  Jamil MUHAMMAD  Youngjae JEON
Abstract:A series of novel dimesogenic compounds containing cholesterol and 4‐(trans‐4‐n‐alkylcyclohexyl)benzoic acid moieties were synthesized. The two mesogenic units of these compounds are linked with ω‐oxyalkanoyl spacers of varying lengths. The chemical structure and mesomorphic properties of this series of compounds were characterized by FT‐IR, MS, 1H NMR, polarizing optical microscopy (POM) and DSC techniques. The average viscosity and helical twisting power (HTP) in host liquid crystals of selected dimesogenic compounds were also measured. It was found that most of the present novel series of compounds exhibited only cholesteric mesophase with lower phase transition temperatures, and the average viscosity and HTP of selected compounds were similar to or superior to cholesteryl nonylate.
Keywords:cholesterol  4‐(trans‐4‐n‐alkylcyclohexyl)benzoic acid  dimesogenic compound  HTP  chiral dopant
点击此处可从《中国化学》浏览原始摘要信息
点击此处可从《中国化学》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号