Synthesis and Property of Bent-Core Liquid Crystal Compounds with Carbonyl Central Unit

HUANG Jiang-tao; YOU Hong-jun; ZHANG Zhi-yong; GUAN Jin-tao; DAI Zhi-qun; ZHANG Kai-cheng

doi:10.3788/YJYXS20132805.0668

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Synthesis and Property of Bent-Core Liquid Crystal Compounds with Carbonyl Central Unit

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

- Synthesis and Property of Bent-Core Liquid Crystal Compounds with Carbonyl Central Unit
- Chinese Journal of Liquid Crystals and Displays Vol. 28, Issue 5, Pages: 668-673(2013)
- 作者机构：
  
  武汉轻工大学化学与环境工程学院,湖北武汉,430023
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20132805.0668
  CLC： TN27
- Received：01 April 2013，
  
  Revised：08 May 2013，
  
  Published：15 October 2013
- 稿件说明：
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黄江涛, 游红军, 张智勇, 关金涛, 戴志群, 张开诚. 以羰基为中心基团的香蕉形液晶合成与性能研究[J]. 液晶与显示, 2013,28(5): 668-673

HUANG Jiang-tao, YOU Hong-jun, ZHANG Zhi-yong, GUAN Jin-tao, DAI Zhi-qun, ZHANG Kai-cheng. Synthesis and Property of Bent-Core Liquid Crystal Compounds with Carbonyl Central Unit[J]. , 2013,28(5): 668-673
黄江涛, 游红军, 张智勇, 关金涛, 戴志群, 张开诚. 以羰基为中心基团的香蕉形液晶合成与性能研究[J]. 液晶与显示, 2013,28(5): 668-673 DOI： 10.3788/YJYXS20132805.0668.

HUANG Jiang-tao, YOU Hong-jun, ZHANG Zhi-yong, GUAN Jin-tao, DAI Zhi-qun, ZHANG Kai-cheng. Synthesis and Property of Bent-Core Liquid Crystal Compounds with Carbonyl Central Unit[J]. , 2013,28(5): 668-673 DOI： 10.3788/YJYXS20132805.0668.

摘要

以4

4'-二羟基二苯甲酮为中心结构基元

以酯基(COO)作为桥键

烷基(

10)为末端基团

合成了一系列新型香蕉形液晶化合物(mPEPK)

通过IR、

H NMR、

C NMR和MS鉴定这些化合物的结构正确

并经过差热扫描仪(DSC)和偏光显微镜(POM)测定其相变温度和相态织构。结果表明

所合成目标化合物具有近晶相

并且相转变温度较类似结构香蕉型液晶化合物有大幅度降低。

Abstract

A novel series of bent-core molecules (mPEPK) was prepared with a central bent core based on 4

4-dihydroxybenzophenone (DHBP)

ester group bridge(COO)

and alkyl tails with different carbon numbers (

= 5

10.). The structures of the titled compounds were confirmed by IR

H NMR

C NMR

MS spectra

and their transition temperatures and phase textures were investigated by using differential scanning calorimetric(DSC) and polarizing optical microscopy(POM). A part of the compounds exist smectic phase. Comparing with the similar compounds

the target compounds (m-PEPK) have declined to a great extent in liquid crystalline phase transition temperatures.

关键词

Keywords

references

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