An Azoester-containing Photoresponsive Linear Liquid Crystal Polymer with Good Mesophase Stability

Shu-Qiang Han; Ying-Ying Chen; Bo Xu; Jia Wei; Yan-Lei Yu

doi:10.1007/s10118-020-2383-0

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An Azoester-containing Photoresponsive Linear Liquid Crystal Polymer with Good Mesophase Stability

ARTICLE | Updated：2020-02-27

- An Azoester-containing Photoresponsive Linear Liquid Crystal Polymer with Good Mesophase Stability
- Chinese Journal of Polymer Science Vol. 38, Issue 8, Pages: 806-813(2020)
- Affiliations：
  
  Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
- Author bio：
  
  weijia@fudan.edu.cn
- Funds：
- DOI：10.1007/s10118-020-2383-0
  CLC：
- Received：01 November 2019，
  
  Revised：2019-12-25，
  
  Accepted：28 December 2019，
  
  Online First：27 February 2020，
  
  Published：2020-08
- Accepted：
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Han, S. Q.; Chen, Y. Y.; Xu, B.; Wei, J.; Yu, Y. L. An azoester-containing photoresponsive linear liquid crystal polymer with good mesophase stability. Chinese J. Polym. Sci. 2020, 38, 806–813

Shu-Qiang Han, Ying-Ying Chen, Bo Xu, et al. An Azoester-containing Photoresponsive Linear Liquid Crystal Polymer with Good Mesophase Stability[J]. Chinese Journal of Polymer Science, 2020, 38(8): 806-813.
Han, S. Q.; Chen, Y. Y.; Xu, B.; Wei, J.; Yu, Y. L. An azoester-containing photoresponsive linear liquid crystal polymer with good mesophase stability. Chinese J. Polym. Sci. 2020, 38, 806–813 DOI： 10.1007/s10118-020-2383-0.

Shu-Qiang Han, Ying-Ying Chen, Bo Xu, et al. An Azoester-containing Photoresponsive Linear Liquid Crystal Polymer with Good Mesophase Stability[J]. Chinese Journal of Polymer Science, 2020, 38(8): 806-813. DOI： 10.1007/s10118-020-2383-0.

摘要

Abstract

Photoresponsive linear liquid crystal polymers (LLCPs) are attractive because of the excellent stimuli-responsibility and the good processability. In this study

a new photoresponsive LLCP containing azoester (PC11AE6) with good mesophase stability was synthesized by ring-opening metathesis polymerization. By introducing photoresponsive azoester mesogenic unit

which has high rigidity and a large length-diameter ratio

the resultant polymer possesses a broad mesophase temperature interval (isotropic temperature = 180 °C). A study on mesophase by 2D-wide angle X-ray diffraction indicated that the mesogens were orientated spontaneously into smectic A phase after annealing. The orientated films and fibres exhibited macroscopic

rapid and reversible deformations under light irradiation as a result of the photoisomerization of azoester as confirmed by UV-Vis absorption spectrophotometry. We anticipate that this work provides a strategy for preparing LLCP with a broad mesophase temperature range

which is positive for potential applications.

关键词

Keywords

references

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