高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (2): 307.

• 研究论文 • 上一篇    下一篇

新型侧链液晶M5MPP/MMEANB高聚物的合成与表征

范广宇1, 赵晓光1, 周恩乐1, 田颜清2   

  1. 1. 中国科学院长春应用化学研究所高分子物理与化学国家重点实验室, 长春 130022;
    2. 吉林大学化学系, 长春 130021
  • 收稿日期:1999-08-30 出版日期:2001-02-24 发布日期:2001-02-24
  • 通讯作者: 赵晓光(1950年出生),女,高级工程师,主要从事高分子液晶研究.
  • 基金资助:

    国家自然科学基金(批准号:29774033);国家重点基础研究专项经费资助(批准号:G1999060305)

Synthesis and Characterization of Side Chain Liquid Crystal M5MPP/MMEANB Copolymers Containing NLO Active Group

FAN Guang-Yu1, ZHAO Xiao-Guang1, ZHOU En-Le1, TIAN Yan-Qing2   

  1. 1. Open Experimental Laboratory of Polymeric Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
    2. Department of Chemistry, Jilin University, Changchun 130021, China
  • Received:1999-08-30 Online:2001-02-24 Published:2001-02-24

PDF (PC)

被引次数

20

摘要： 以4,4'-二羟基联苯、4-硝基苯胺、二溴己烷、甲基丙烯酸、氯代乙醇为原料合成了单体甲基丙烯酸[5(4'-甲氧基联苯4氧基)戊基]酯(M5MPP)、4-硝基偶氮苯基甲基-2-甲基丙烯酸酯基乙胺(MMEANB),并完成了单体的聚合和共聚,得到了含有非线性光学活性基团(NLO)的侧链液晶高分子,对其结构进行了表征.结果表明,均聚物PM5MPP及共聚物(M5MPP/MMEANB)属双向液晶高分子;PMMEANB属于非晶性高分子.证实了分子间吸电子与给电子基团相互作用有利于提高液晶高分子热稳定性,共聚物(M5MPP/MMEANB)具有较宽的液晶相温度范围.

关键词: 合成, 侧链液晶高分子, 共聚物, 液晶相

Abstract: Anew series of side chain liquid crystal polymers based on the backbone of polymethacrylate containing 4-nitroazobenzene and 4-methoxybiphenyl group as side chain mesogen were prepared and characterized, FTIR, 1H NMR, POMand WAXDwere used to study the structure, phase behavior and mesophase texture of this series of SCLCcopolymers. The researches show that polymer PM5MPPand copolymer M5MPP/MMEANBare enantiotropic liquid crystalline polymers, but polymer PMMEANBhas no liquid crystalline properties. DSCresults showed that the thermal stability of the mesophase of this series of copolymers was enhanced by the existence of intermolecular electron donor-acceptor interaction. It was found that the temperature range of the mesophase of the copolymers was broadened with increasing 4-nitroazobenzene units. The focal-conic texture observed by POMindicated that this series of the copolymers possessed the characteristics of smectic liquid crystal.

Key words: Synthesis, Side-chain liquid crystalline polymer, Copolymers, Phase of liquid crystal

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