Synthesis and Characterization of Liquid Crystalline Monomers and Polymers Based on <italic style="font-style: italic">L</italic>-Isoleucine Derivative

Wuyantana LI; Wen-chang ZHANG; Ying ZHANG; Jian-she HU

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Synthesis and Characterization of Liquid Crystalline Monomers and Polymers Based on L-Isoleucine Derivative

更新时间：2022-09-18

- Synthesis and Characterization of Liquid Crystalline Monomers and Polymers Based on L-Isoleucine Derivative
- Polymer Bulletin Vol. 26, Issue 8, Pages: 51-55(2013)
- 作者机构：
  
  1.内蒙古医学院公共卫生学院，呼和浩特　010059
  2.东北大学理学院分子科学与工程研究所，沈阳　110004
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013-08，
  
  Received：08 January 2013，
  
  Revised：17 May 2013，
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Wuyantana LI, Wen-chang ZHANG, Ying ZHANG, Jian-she HU. Synthesis and Characterization of Liquid Crystalline Monomers and Polymers Based on L-Isoleucine Derivative. [J]. Polymer Bulletin 26(8):51-55(2013)
DOI：

Wuyantana LI, Wen-chang ZHANG, Ying ZHANG, Jian-she HU. Synthesis and Characterization of Liquid Crystalline Monomers and Polymers Based on L-Isoleucine Derivative. [J]. Polymer Bulletin 26(8):51-55(2013) DOI：

摘要

通过对

-异亮氨酸化合物进行扩展性研究及分子设计

本论文合成了四种含(2S

3S)-3-甲基-2-氯戊酰氧基的手性液晶单体(M

)

然后再以六氯合铂酸为引发剂

将四种单体通过接枝聚合

获得了对应的聚硅氧烷类液晶高分子(P

)

采用FT-IR、

H-NMR与GPC表征了所合成的中间体、手性液晶单体及其聚合物的化学结构与分子量及分布

结果符合分子设计。此外

采用旋光仪测定了手性单体的旋光度

研究表明:它们均为右旋化合物

其比旋光度随化合物刚性的增加而降低

而对于端基相同、液晶核刚性大小接近的单体

其比旋光度比较接近。

Abstract

The synthesis of four new chiral liquid crystalline monomers (M

) based on

-isoleucine derivative is described. The corresponding polymers (P

) were prepared by graft polymerization of these monomers at dry toluene using chloroplatnic acid as a catalyst. The chemical structures of the obtained intermediate

chiral monomers and polymers were characterized by FT-IR and

H-NMR. The average molecular weight was determined by gel permeation chromatography. The specific optical rotations were evaluated with a polarimeter. The experimental results showed that the specific optical rotations of M

were all right-handed

their values of specific rotation decreased with increasing rigidity. In addition

the monomers with near rigidity and same terminal groups

their specific rotation values hardly changed.

关键词

L-异亮氨酸液晶手性单体聚合物合成

Keywords

L-IsoleucineLiquid crystallineChiral monomerPolymerSynthesis

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College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology

Key Laboratory of Synthesis and Self-Assembly Chemistry for Organic Functional Molecules, Shanghai Instituet of Organic Chemistry, Chinese Academy of Sciences

Public Health College, Inner Mongolia Medical College

College of Science, Northeastern University

Department of Polymer Materials, School of Chemical Engineering, Dalian University of Technology, Zhongshan Road

⁰

Synthesis and Characterization of Liquid Crystalline Monomers and Polymers Based on L-Isoleucine Derivative

DOI：

摘要

Abstract

关键词

Keywords

references