Synthesis and Properties of High Birefringence and Low Viscosity Liquid Crystal

ZHANG Ran; PENG Zeng-hui; LIU Yong-gang; XUAN Li; ZHANG Zhi-yong

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Synthesis and Properties of High Birefringence and Low Viscosity Liquid Crystal

Material Physics & Chemistry | 更新时间：2020-08-12

- Synthesis and Properties of High Birefringence and Low Viscosity Liquid Crystal
- Chinese Journal of Liquid Crystals and Displays Vol. 24, Issue 6, Pages: 789-793(2009)
- 作者机构：
  
  1. 中国科学院研究生院北京,100039
  2. 中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林长春 130033, E-mail:arandy@tom.com
  3. 武汉工业学院化学与环境工程系,湖北武汉,430023
- 作者简介：
- 基金信息：
- DOI：
  CLC： O753+.2
- Received：09 April 2009，
  
  Revised：02 January 1900，
  
  Published Online：30 December 2009，
  
  Published：30 December 2009
- 稿件说明：
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张然;彭增辉;刘永刚;宣丽;张智勇. 高Δ<em>n</em>低粘度液晶的合成及性能研究[J]. 液晶与显示, 2009,24(6): 789-793

ZHANG Ran;PENG Zeng-hui;LIU Yong-gang;XUAN Li;ZHANG Zhi-yong. Synthesis and Properties of High Birefringence and Low Viscosity Liquid Crystal[J]. 液晶与显示, 2009,24(6): 789-793
张然;彭增辉;刘永刚;宣丽;张智勇. 高Δ<em>n</em>低粘度液晶的合成及性能研究[J]. 液晶与显示, 2009,24(6): 789-793 DOI：

ZHANG Ran;PENG Zeng-hui;LIU Yong-gang;XUAN Li;ZHANG Zhi-yong. Synthesis and Properties of High Birefringence and Low Viscosity Liquid Crystal[J]. 液晶与显示, 2009,24(6): 789-793 DOI：

摘要

利用二苯乙炔为中心基团上的核心结构

合成了多种极性较低的液晶和几种含氟液晶单体化合物

并按10%的质量分数与商用液晶进行了混配

同时制成了平行排列的液晶盒。通过旋转粘度计分别测量了混合后的液晶溶液的粘度。利用光谱型椭偏仪测量了633 nm下的平行液晶盒的

并且外推出了掺入的液晶单体的

其结果与Vuks方程的计算结果吻合得很好。结果显示

二苯乙炔类液晶比传统的联苯类液晶的

有了显著提高

同时保持了相对较低的粘度

适合用于要求具有快速响应特性的液晶器件。

Abstract

A group of liquid crystal (LC) single compounds with low polar or fluorine substitutes

which employee tolane as their mesogenic core

were synthesized and mixed with commercial liquid crystal mixture (10% by weight). Then

parallel-aligned liquid crystal cells were made with these mixtures. The viscosities of these mixtures were measured by rotational viscometer respectively. And the birefringence (n

)

of these LC cells were measured by spectroscopic ellipsometer at 633 nm. The n of each LC single compound was extrapolated

the results show a reasonable correlation with that calculated by Vuks equation. These tolane-type liquid crystals have remarkable higher n than the biphenyl compounds

and relative low viscosity

so should be suitable for the applications that require high speed response.

关键词

Keywords

references

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State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China, E-mail:arandy@tom.

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