Redox triggered aggregation induced emission (AIE) polymers with azobenzene pendants
Redox triggered aggregation induced emission (AIE) polymers with azobenzene pendants
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DOI：
10.1016/j.dyepig.2018.04.066
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发表时间：
2018-10
影响因子：
4.5
通讯作者：
Bing Wu;Wei Wang;Jilei Wang;Shang Li;Yan-Bing He
中科院分区：
文献类型：
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作者：
Bing Wu;Wei Wang;Jilei Wang;Shang Li;Yan-Bing He
报道了偶氮苯侧基的氧化还原引发聚集诱导发光聚合物。通过后聚合偶氮偶联方法合成了偶氮苯生色团官能化程度不同的四苯乙烯（TPE）基聚合物。由于荧光共振能量转移（FRET）过程，TPE荧光部分的激发能可以转移到偶氮苯生色团上，从而使TPE荧光部分的荧光态被很好地猝灭。偶氮苯生色团的官能化程度对FRET过程有很大的影响。通过在用水合肼处理时还原偶氮苯发色团，基于TPE的聚合物的强荧光将再次恢复。除了在溶液中，这种氧化还原反应也可以在含偶氮苯聚合物的固体膜中发现。
We reported the redox triggered aggregation induced emission (AIE) polymers with azobenzene pendants. Tetraphenylethene (TPE) based polymers with selected degrees of functionalization of azobenzene chromophores were synthesized through a post-polymerization azo-coupling scheme. Due to the fluorescence resonance energy transfer (FRET) process, the excited energy of the fluorescent TPE parts could be transferred to the azobenzene chromophores, so that the fluorescent states of TPE parts would be well quenched. The degrees of functionalization of the azobenzene chromophores have shown much effect on this FRET process. By the reduction of azobenzene chromophores upon treatment with hydrazine hydrate, the strong fluorescence of the TPE based polymers would recover again. Besides in solution, this redox reaction triggered fluorescence of azobenzene containing polymers could also be found in their solid films.