A carboxylic azo monomer and its homopolymer: synthesis, self-organization and fluorescence behaviour in solution
文献信息
发布日期
2014-09-09
DOI
10.1039/C4PY01062K
影响因子
5.582
作者
Hao Ren, Dong Chen, Yan Shi, Haifeng Yu, Zhifeng Fu
查看原文
摘要
We report special self-organization and fluorescence emission behaviours of a carboxylic azo monomer, 6-[4-(4-carboxylphenylazo)phenoxyl]hexyl methacrylate (M6AzCOOH), and its homopolymer (PM6AzCOOH) in solution. The monomer M6AzCOOH and its homopolymer PM6AzCOOH were non-fluorescent in N,N-dimethyl formamide (DMF) solution but became fluorescent, induced by the addition of water. The intensity of fluorescence emission increased with the amount of water in the mixed solvent and was sensitive to the pH value of the solution. The transmission electron microscopy (TEM) image reflected that vesicle-like structures formed due to the self-organization of PM6AzCOOH in water–DMF mixed solvent, and these structures changed into other forms of aggregation when the pH value of the solution was modified. The photoresponsive behaviour of the homopolymer in solution was investigated upon UV irradiation, demonstrating that trans–cis isomerization of azobenzene was hindered by the formation of aggregation and the change of aggregation form was responsible for the fluorescence emission behaviours.
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来源期刊
Polymer Chemistry
CiteScore:
8.6
自引率:
7.3%
年发文量:
457
Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.
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