A carboxylic azo monomer and its homopolymer: synthesis, self-organization and fluorescence behaviour in solution
A carboxylic azo monomer and its homopolymer: synthesis, self-organization and fluorescence behaviour in solution
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羧基偶氮单体及其均聚物：合成、自组织和溶液中的荧光行为
DOI：
10.1039/c4py01062k
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发表时间：
2015
影响因子：
4.6
通讯作者：
Fu Zhifeng
中科院分区：
文献类型：
--
作者：
Ren Hao;Chen Dong;Shi Yan;Yu Haifeng;Fu Zhifeng
我们报道了一种羧基偶氮单体6-[4-（4-羧基苯基偶氮）苯氧基]甲基丙烯酸己酯（M6AzCOOH）及其均聚物（PM6AzCOOH）在溶液中的特殊自组织和荧光发射行为。单体M6AzCOOH及其均聚物PM6AzCOOH在N，N-二甲基甲酰胺（DMF）溶液中无荧光，但在加入水的诱导下产生荧光。荧光发射强度随混合溶剂含水量的增加而增加，且对溶液的pH值敏感。透射电镜（TEM）图像显示，PM6AzCOOH在水- dmf混合溶剂中自组织形成囊泡状结构，当溶液pH值改变时，这些结构转变为其他形式的聚集。在紫外照射下研究了均聚物在溶液中的光响应行为，表明偶氮苯的反顺异构化被聚集物的形成所阻碍，而聚集物形式的改变是导致荧光发射行为的原因。
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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DOI：
10.1002/pola.26167
发表时间：
2012-09
期刊：
Journal of Polymer Science Part A
影响因子：
--
作者：
Yan Sun;Nianchen Zhou;Wei Zhang-;Yaowen Li;Zhenping Cheng;Jian Zhu;Zhengbiao Zhang;Xiu-lin Zhu
通讯作者：
Yan Sun;Nianchen Zhou;Wei Zhang-;Yaowen Li;Zhenping Cheng;Jian Zhu;Zhengbiao Zhang;Xiu-lin Zhu
DOI：
10.1021/la0632068
发表时间：
2007-01
期刊：
Langmuir : the ACS journal of surfaces and colloids
影响因子：
--
作者：
Ning Ma;Yapei Wang;Baoyu Wang;Zhiqiang Wang;Xi Zhang;Guang-Jia Wang;Yue Zhao
通讯作者：
Ning Ma;Yapei Wang;Baoyu Wang;Zhiqiang Wang;Xi Zhang;Guang-Jia Wang;Yue Zhao
影响因子：
5.8
作者：
A. Priimagi;Aki Shimamura;M. Kondo;T. Hiraoka;S. Kubo;J. Mamiya;Motoi Kinoshita;T. Ikeda;A. Shishido
通讯作者：
A. Priimagi;Aki Shimamura;M. Kondo;T. Hiraoka;S. Kubo;J. Mamiya;Motoi Kinoshita;T. Ikeda;A. Shishido
影响因子：
6.4
作者：
Priimagi, Arri;Barrett, Christopher J.;Shishido, Atsushi
通讯作者：
Shishido, Atsushi
影响因子：
5.5
作者：
Weian Zhang;B. Fang;A. Walther;A. Müller
通讯作者：
Weian Zhang;B. Fang;A. Walther;A. Müller