高等学校化学学报

高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (5): 689.

• 论文 • 上一篇    下一篇

乙烷类三环体系液晶的合成及其相变规律的研究

唐洪, 徐寿颐   

  1. 清华大学化学系, 北京, 100084
  • 收稿日期:1993-06-25 修回日期:1993-12-16 出版日期:1994-05-24 发布日期:1994-05-24
  • 通讯作者: 唐洪,男,29岁,硕士,助教.
  • 作者简介:唐洪,男,29岁,硕士,助教.

Synthesis of Three-Ring-System Liquid Crystal Containing Ethylene Linking Group and Study of Their Phase Transition

TANG Hong, XU Shou-Yi   

  1. Department of Chemistry, Tsinghua University, Beijing, 100084
  • Received:1993-06-25 Revised:1993-12-16 Online:1994-05-24 Published:1994-05-24

PDF (PC)

被引次数

1

摘要： 以反式-4-烷基环己烷甲酸为原料,合成了两个系列共14种乙烷类三环体系液晶。利用NMR、IR、DSC等确定了化合物的结构及相变温度,讨论了化合物的结构对相变温度的影响。

关键词: 液晶, 合成, 相变温度

Abstract: Two series of three ring system liquid crystal materials containing ethylene linking group between a cyclohexyl and a phenylene ring were synthesized using the starting material──trans-4-alkyl cyclohexyl carboxylic acid. The details of the preparation steps were described.The influences of alkyl chain length on the phase transition temperatures were studied.The relationship between the physical properties and structures of two series of liquid crystal materials was discussed.

Key words: Liquid crystal, Synthesis, Temperature of phase transition

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