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首页> 外文期刊>Journal of Applied Polymer Science >Photo-responsive block copolymer containing azobenzene group: Synthesis by reversible addition-fragmentation chain transfer polymerization and characterization
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Photo-responsive block copolymer containing azobenzene group: Synthesis by reversible addition-fragmentation chain transfer polymerization and characterization

机译：含有偶氮苯基的光响应嵌段共聚物：通过可逆添加 - 破碎链转移聚合和表征合成

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The design and synthesis of a new azobenzene-based methacrylate monomer (Azo-IEM) was demonstrated, and its polymerization behavior during reversible addition-fragmentation chain transfer (RAFT) polymerization was investigated. Well-defined homopolymer and amphiphilic block copolymer containing Azo-IEM monomeric units were successfully prepared as evidenced by NMR and GPC analysis. Moreover, the photo-triggered reversible isomerization of polymer products in selected solvents was investigated. Finally, TEM analysis showed that there were significant differences in the nanoparticle morphologies when the block copolymer samples were irradiated with different wavelengths of light (i.e., UV and visible). The size and shapes of the p(HEMA-b-Azo-IEM) polymer capable of transitions upon changes in Vis/UV light exposure which prepared from MeOH/CHCl3 mixture solvent. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47870.
机译：对新的偶氮苯基的甲基丙烯酸酯单体（AZO-IEM）进行了设计和合成，研究了可逆添加 - 碎片链转移（RAFT）聚合期间的其聚合行为。 成功制备含有偶氮-IEM单体单元的明确定义的均聚物和两亲嵌段共聚物，如NMR和GPC分析所证明的。 此外，研究了选定溶剂中聚合物产物的光触发的可逆异构化。 最后，TEM分析表明，当嵌段共聚物样品用不同波长的光（即UV和可见）照射嵌段共聚物样品时，纳米颗粒形态存在显着差异。 P（HEMA-B-AZO-IEM）聚合物的尺寸和形状能够在由MeOH / CHCl3混合物溶剂制备的Vis / UV光暴露的变化时转变。 （c）2019 Wiley期刊，Inc.J.Phill。 聚合物。 SCI。 2019,136,47870。

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