Synthesis and Mesomorphic Properties of 4'-Fluorobiphenyl-4-yl-4-(2,3,5,6-Tetrafluoro-4-Alkylphenethyl)Benzoates

SUN Chong; QIN Chuan; WEN Jian-xun

doi:10.3788/YJYXS20112603.0267

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Synthesis and Mesomorphic Properties of 4'-Fluorobiphenyl-4-yl-4-(2,3,5,6-Tetrafluoro-4-Alkylphenethyl)Benzoates

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

- Synthesis and Mesomorphic Properties of 4'-Fluorobiphenyl-4-yl-4-(2,3,5,6-Tetrafluoro-4-Alkylphenethyl)Benzoates
- Chinese Journal of Liquid Crystals and Displays Vol. 26, Issue 3, Pages: 267-273(2011)
- 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/YJYXS20112603.0267
  CLC： O753+.2
- Received：06 December 2010，
  
  Revised：09 January 2011，
  
  Published Online：20 June 2011，
  
  Published：20 June 2011
- 稿件说明：
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孙冲, 秦川, 闻建勋. 4-(2,3,5,6-四氟-烷基取代苯乙基)苯甲酸-4'-氟-4-联苯酯的合成及液晶性研究[J]. 液晶与显示, 2011,26(3): 267-273

SUN Chong, QIN Chuan, WEN Jian-xun. Synthesis and Mesomorphic Properties of 4'-Fluorobiphenyl-4-yl-4-(2,3,5,6-Tetrafluoro-4-Alkylphenethyl)Benzoates[J]. , 2011,26(3): 267-273
孙冲, 秦川, 闻建勋. 4-(2,3,5,6-四氟-烷基取代苯乙基)苯甲酸-4'-氟-4-联苯酯的合成及液晶性研究[J]. 液晶与显示, 2011,26(3): 267-273 DOI： 10.3788/YJYXS20112603.0267.

SUN Chong, QIN Chuan, WEN Jian-xun. Synthesis and Mesomorphic Properties of 4'-Fluorobiphenyl-4-yl-4-(2,3,5,6-Tetrafluoro-4-Alkylphenethyl)Benzoates[J]. , 2011,26(3): 267-273 DOI： 10.3788/YJYXS20112603.0267.

摘要

以2

6-五氟溴苯和脂肪醛为起始原料

设计并合成了一系列含四氟苯基亚乙基的四环酯类液晶化合物

通过偏光显微镜和DSC对其相变行为进行了研究。整个系列化合物有较宽的向列相温度范围

所合成的化合物中

随着末端碳链的增长

熔点和清亮点呈现下降趋势。

Abstract

A series of 1

2-bisubstituted ethane's liquid crystals containing polyfluorophenyl group were synthesized from penta-fluorobromobenzene and aliphatic aldehydes.Their phase transition behaviours were studied by DSC and thermal polarizing microscopy.The results showed this series of compounds have high clearing point and wide temperature range of nematic phase.The phase transition temperature is lower when the alkyl chains of compounds become longer.

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references

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