Synthesis of an Azobenzene-containing Main-chain Crystalline Polymer and Photodeformation Behaviors of Its Supramolecular Hydrogen-bonded Fibers

Zheng-Zheng Wang; Hui-Qi Zhang

doi:10.1007/s10118-019-2302-4

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Synthesis of an Azobenzene-containing Main-chain Crystalline Polymer and Photodeformation Behaviors of Its Supramolecular Hydrogen-bonded Fibers

ARTICLE | Updated：2019-08-30

- Synthesis of an Azobenzene-containing Main-chain Crystalline Polymer and Photodeformation Behaviors of Its Supramolecular Hydrogen-bonded Fibers
- Chinese Journal of Polymer Science Vol. 38, Issue 1, Pages: 37-44(2020)
- Affiliations：
  
  State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials (Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), and College of Chemistry, Nankai University, Tianjin 300071, China
- Author bio：
  
  zhanghuiqi@nankai.edu.cn
- Funds：
- DOI：10.1007/s10118-019-2302-4
  CLC：
- Received：29 March 2019，
  
  Revised：2019-5-23，
  
  Accepted：25 May 2019，
  
  Online First：30 August 2019，
  
  Published：2020-01
- Accepted：
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Citation: Wang, Z. Z.; Zhang, H. Q. Synthesis of an azobenzene-containing main-chain crystalline polymer and photodeformation behaviors of its supramolecular hydrogen-bonded fibers. Chinese J. Polym. Sci. 2020, 38, 37–44

Zheng-Zheng Wang, Hui-Qi Zhang. Synthesis of an Azobenzene-containing Main-chain Crystalline Polymer and Photodeformation Behaviors of Its Supramolecular Hydrogen-bonded Fibers[J]. Chinese Journal of Polymer Science, 2020, 38(1): 37-44.
Citation: Wang, Z. Z.; Zhang, H. Q. Synthesis of an azobenzene-containing main-chain crystalline polymer and photodeformation behaviors of its supramolecular hydrogen-bonded fibers. Chinese J. Polym. Sci. 2020, 38, 37–44 DOI： 10.1007/s10118-019-2302-4.

Zheng-Zheng Wang, Hui-Qi Zhang. Synthesis of an Azobenzene-containing Main-chain Crystalline Polymer and Photodeformation Behaviors of Its Supramolecular Hydrogen-bonded Fibers[J]. Chinese Journal of Polymer Science, 2020, 38(1): 37-44. DOI： 10.1007/s10118-019-2302-4.

摘要

Abstract

The synthesis of a new azobenzene (azo)-containing main-chain crystalline polymer with reactive secondary amino groups in its backbone and photodeformation behaviors of its supramolecular hydrogen-bonded fibers are described. This main-chain azo polymer (namely Azo-MP6) was prepared

via

first the synthesis of a diacrylate-type azo monomer and its subsequent Michael addition copolymerization with

trans

-1

4-cyclohexanediamine under a mild reaction condition. Azo-MP6 was found to have a linear main-chain chemical structure instead of a branched one

as verified by comparing its

H-NMR spectrum with that of the azo polymer prepared

via

the polymer analogous reaction of Azo-MP6 with acetic anhydride. The thermal stability

phase transition behavior

and photoresponsivity of Azo-MP6 were characterized with TGA

DSC

POM

XRD

and UV-Vis spectroscopy. The experimental results revealed that it had good thermal stability

low glass transition temperature

broad crystalline phase temperature range

and highly reversible photoresponsivity. Physically crosslinked supramolecular hydrogen-bonded fibers with good mechanical properties and a high alignment order of azo mesogens were readily fabricated from Azo-MP6 by using the simple melt spinning method

and they could show " reversible” photoinduced bending under the same UV light irradiation and good anti-fatigue properties.

关键词

Keywords

references

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