含有2,3,5,6-四氟亚苯基的负性液晶合成及液晶性研究

戴修文; 蔡良珍; 闻建勋

doi:10.3788/YJYXS20132803.0464

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含有2,3,5,6-四氟亚苯基的负性液晶合成及液晶性研究

研究简报 | 更新时间：2020-08-12

- 含有2,3,5,6-四氟亚苯基的负性液晶合成及液晶性研究
- Synthesis and Application of Negative Liquid Crystals Containing 2,3,5,6-Tetrafluorophenylene
- 液晶与显示 2013年28卷第3期页码：464-466
- 作者机构：
  
  1. 华东理工大学化学与分子工程学院上海,200237
  2. 上海天问化学有限公司上海,200232
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20132803.0464
  中图分类号： O753+.2
- 收稿日期：2012-01-25，
  
  修回日期：2012-11-27，
  
  网络出版日期：2012-12-17，
  
  纸质出版日期：2013-06-15
- 稿件说明：
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戴修文, 蔡良珍, 闻建勋. 含有2,3,5,6-四氟亚苯基的负性液晶合成及液晶性研究[J]. 液晶与显示, 2013,28(3): 464-466

DAI Xiu-wen, CAI Liang-zhen, WEN Jian-xun. Synthesis and Application of Negative Liquid Crystals Containing 2,3,5,6-Tetrafluorophenylene[J]. , 2013,28(3): 464-466
戴修文, 蔡良珍, 闻建勋. 含有2,3,5,6-四氟亚苯基的负性液晶合成及液晶性研究[J]. 液晶与显示, 2013,28(3): 464-466 DOI： 10.3788/YJYXS20132803.0464.

DAI Xiu-wen, CAI Liang-zhen, WEN Jian-xun. Synthesis and Application of Negative Liquid Crystals Containing 2,3,5,6-Tetrafluorophenylene[J]. , 2013,28(3): 464-466 DOI： 10.3788/YJYXS20132803.0464.

摘要

设计并合成了两类含氟的负性液晶化合物

通过偏光显微镜和差示扫描量热仪的检测两类液晶化合物都为向列相液晶

且具有很好的液晶性能。全氟二苯乙炔类负性液晶具有很高的清亮点和低的黏度;全氟二苯亚乙基类负性液晶具有很低的黏度和小的双折射率

前者可作为自适应光学系统空间光调制器液晶材料;后者可作为TFT-LCD混合液晶材料中的减黏部分。两个目标化合物分别是通过sonogashira交叉偶联反应和钯催化加氢还原反应得到的。

Abstract

Two kinds of fluorinated negative liquid crystal compounds were synthesized. Two series of nematic liquid crystals were measured by polarised optical microscopy with a heating stage and differential scanning calorimetry and their good mesomorphic properties were observed.For example

the negative liquid crystals introducing 1

4-perfluorophenylene to molecular structure of diphenyl acetylene have high birfringence and low rotational viscosity. The result shows that the liquid crystal compounds with ethylidene bridge could have low birfringence and low viscosity. The first type of compounds could be used in adaptive system like as application in construction of spatial light modulator; the second type of compounds could satisfy the requirements of a low viscosity component in TFT-LCD .Two target compounds were synthesized by sonogashira coupling reaction and then Pd/C catalytic hydrogenation.

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references

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