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

Guang Yu Fan, Xiao Guang Zhao, En Le Zhou, Yan Qing Tian

Research output: Contribution to journalArticle

Abstract

A new 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, POM and WAXD were used to study the structure, phase behavior and mesophase texture of this series of SCLC copolymers. The researches show that polymer PM5MPP and copolymer M5MPP/MMEANB are enantiotropic liquid crystalline polymers, but polymer PMMEANB has no liquid crystalline properties. DSC results 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 POM indicated that this series of the copolymers possessed the characteristics of smectic liquid crystal.

Original languageEnglish (US)
Pages (from-to)310-311
Number of pages2
JournalKao Teng Hsueh Hsiao Hua Heush Hsueh Pao/ Chemical Journal of Chinese Universities
Volume22
Issue number2
StatePublished - Feb 10 2001

Keywords

  • Copolymers
  • Phase of liquid crystal
  • Side-chain liquid crystalline polymer
  • Synthesis

ASJC Scopus subject areas

  • Chemistry(all)

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