可交联型两性双亲分子的合成及其溶致液晶相结构的研究

吴晗宇; 冯训达

doi:10.37188/CJLCD.2021-0062

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可交联型两性双亲分子的合成及其溶致液晶相结构的研究

材料物理 | 更新时间：2021-08-05

- 可交联型两性双亲分子的合成及其溶致液晶相结构的研究
- Synthesis and lyotropic liquid crystalline behavior of a cross-linkable zwitterionic amphiphile
- 液晶与显示 2021年36卷第8期页码：1069-1074
- 作者机构：
  
  1.东华大学材料科学与工程学院纤维材料改性国家重点实验室, 上海 201620
  2.东华大学先进低维材料中心, 上海 201620
- 作者简介：
  
  [ "吴晗宇(1997-), 男, 湖北天门人, 硕士研究生, 2018年于中北大学获得学士学位, 主要从事基于可聚合溶致液晶制备结构有序聚合物的研究。E-mail: 2180263@mail.dhu.edu.cn" ]
  [ "冯训达(1983-), 男, 广西北海人, 博士, 研究员, 2013年于德国哥廷根大学获得博士学位, 主要从事液晶等软物质材料的结构、动态、应用的研究。E-mail: xunda.feng@dhu.edu.cn" ]
- 基金信息：
  
  国家自然科学基金(22075041)
- DOI：10.37188/CJLCD.2021-0062
  中图分类号： O753.2
- 收稿日期：2021-03-08，
  
  修回日期：2021-03-22，
  
  纸质出版日期：2021-08
- 稿件说明：
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吴晗宇, 冯训达. 可交联型两性双亲分子的合成及其溶致液晶相结构的研究[J]. 液晶与显示, 2021,36(8):1069-1074.

Han-yu WU, Xun-da FENG. Synthesis and lyotropic liquid crystalline behavior of a cross-linkable zwitterionic amphiphile[J]. Chinese journal of liquid crystals and displays, 2021, 36(8): 1069-1074.
吴晗宇, 冯训达. 可交联型两性双亲分子的合成及其溶致液晶相结构的研究[J]. 液晶与显示, 2021,36(8):1069-1074. DOI： 10.37188/CJLCD.2021-0062.

Han-yu WU, Xun-da FENG. Synthesis and lyotropic liquid crystalline behavior of a cross-linkable zwitterionic amphiphile[J]. Chinese journal of liquid crystals and displays, 2021, 36(8): 1069-1074. DOI： 10.37188/CJLCD.2021-0062.

摘要

本文报道了一种可交联型的两性双亲分子的设计及合成路线，并进一步探究了其溶致液晶相态。以1，10-二溴代癸烷、丙二酸二乙酯为原料，在液晶分子烷基链末端引入两个可聚合甲基丙烯酸酯基官能团，再通过与1，3-丙烷磺酸内酯的季铵化反应合成了可聚合型两性离子液晶基元。通过核磁共振波谱（NMR）确定合成目标产物的化学结构。运用偏光显微镜（POM）表征并分析了该分子在水中的溶致液晶相行为。根据临界堆积参数（Critical Packing Parameter）推测，该分子临界堆积参数CPP介于1/2~1之间，与水共混自组装易于形成层状相。

Abstract

A cross-linkable zwitterionic amphiphile was designed and synthesized

which can self-assemble into lyotropic liquid crystals for the fabrication of ordered polymeric nanostructure. Bifunctional polymerizable methacrylate groups were introduced into the amphiphilic molecule to afford structural crosslinking by radical polymerization

which can be realized by the use of 1

10-dibromodecane and diethyl malonate as starting materials in the synthesis. Then the quaternization with 1

3-propanesultone yielded the final zwitterionic product that was confirmed by nuclear magnetic resonance spectroscopy (NMR). Lyotropic liquid crystals of the molecule in water were prepared and characterized by polarizing optical microscopy (POM). Hydration of the amphiphile can form only lamellar mesophases. According to the critical packing parameter (CPP) theory

the molecular CPP of this amphiphile is between 1/2 and 1 that preferred the formation of lamellar mesophases.

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