2-烷基-5-(4-烷氧基)苯基含氮杂环液晶合成与性能研究

闻炎豪; 李潭; 王震; 张智勇; 关金涛; 戴志群

doi:10.3788/YJYXS20183309.0725

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2-烷基-5-(4-烷氧基)苯基含氮杂环液晶合成与性能研究

材料与器件 | 更新时间：2020-07-06

- 2-烷基-5-(4-烷氧基)苯基含氮杂环液晶合成与性能研究
- Synthesis and properties of 2-n-alkyl-5-(4-n-alkoxyl) phenyl nitrogen aromatic ring compounds used as liquid crystal
- 液晶与显示 2018年33卷第9期页码：725-733
- 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：
  
  [ "闻炎豪(1993-), 男, 湖北襄阳人, 硕士研究生, 主要从事于光学材料的合成与性能研究。E-mail: 754201982@qq.com" ]
  张智勇, E-mail:zzy6211@126.com
- 基金信息：
  
  国家自然科学基金(61378095);国家自然基金(11374067);the National Nutural Science Foundation of China(61378095);National Natural Science Foundation of China(11374067)
- DOI：10.3788/YJYXS20183309.0725
  中图分类号： O621.3
- 收稿日期：2018-04-08，
  
  录用日期：2018-5-12，
  
  纸质出版日期：2018-09-05
- 稿件说明：
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闻炎豪, 李潭, 王震, 等. 2-烷基-5-(4-烷氧基)苯基含氮杂环液晶合成与性能研究[J]. 液晶与显示, 2018,33(9):725-733.

Yan-hao WEN, Tan LI, Zhen WANG, et al. Synthesis and properties of 2-n-alkyl-5-(4-n-alkoxyl) phenyl nitrogen aromatic ring compounds used as liquid crystal[J]. Chinese journal of liquid crystals and displays, 2018, 33(9): 725-733.
闻炎豪, 李潭, 王震, 等. 2-烷基-5-(4-烷氧基)苯基含氮杂环液晶合成与性能研究[J]. 液晶与显示, 2018,33(9):725-733. DOI： 10.3788/YJYXS20183309.0725.

Yan-hao WEN, Tan LI, Zhen WANG, et al. Synthesis and properties of 2-n-alkyl-5-(4-n-alkoxyl) phenyl nitrogen aromatic ring compounds used as liquid crystal[J]. Chinese journal of liquid crystals and displays, 2018, 33(9): 725-733. DOI： 10.3788/YJYXS20183309.0725.

摘要

含氮芳环作为液晶分子的极性介晶基团，能有效增大分子的偶极矩和分子间的作用力，有利于形成近晶相液晶态，提高分子的介电各向异性，降低液晶的驱动电压。本文试图以嘧啶、吡啶为中心结构单元来增大化合物的偶极矩，设计合成了二个系列含嘧啶、吡啶的双芳环液晶化合物nOBMm、nOBPm系列共7个化合物；它们都经过IR、

H-NMR、

C-NMR和MS光谱对其分子结构鉴定，经过差热分析仪（DSC）和偏光显微镜（POM）对其液晶性能进行检测。实验结果表明，所有化合物的分子结构均正确，具有较宽的近晶相态，可作为铁电液晶和高分子聚合物分散液晶材料配方组分，为进一步研究低能耗铁电液晶和聚合物分散液晶材料提供了实验素材。

Abstract

The nitrogen-containing aromatic ring serves as the polar mesogenic group of the liquid crystal molecule

which can effectively increase the dipole moment of the molecule and improve molecular dielectric anisotropy

reduce LCD drive voltage. It also increases the interaction between molecules

which is conducive to the formation of smectic phase states. In this paper

we designed and synthesized two series of two aromatic liquid crystal compounds

nOBMm and nOBPm series

with pyrimidine and pyridine as the central element to increase the dipole moment of the compounds. They were identified by IR

H-NMR

C-NMR and MS spectra

and their liquid crystal properties were detected by differential thermal analyzer (DSC) and polarizing microscope (POM). Experimental results show that the molecular structure of all compounds are right

and they have been a wide smectic phases. It can be used as the effective component of ferroelectric liquid crystal materials or the polymer dispersed liquid crystal materials

and provides experimental materials for further study on large dielectric anisotropy ferroelectric liquid crystal or polymer dispersed liquid crystal materials.

关键词

Keywords

references

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