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
zhanghuiqi@nankai.edu.cn
收稿:2019-03-29,
修回:2019-5-23,
录用:2019-5-25,
网络首发:2019-08-30,
纸质出版:2020-01
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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.
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
1
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.
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