Fractal Structures from Amphiphilic Random Azo Copolymer
Fractal Structures from Amphiphilic Random Azo Copolymer
复制标题
两亲性无规偶氮共聚物的分形结构
DOI:
10.1021/ma200992n
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发表时间:
2011-10
期刊:
影响因子:
5.5
通讯作者:
Wang, Xiaogong
中科院分区:
文献类型:
--
作者:
Li, Nan;Li, Yaobang;Wang, Xiaogong
This article reports for the first time the observation of a series of fractal structures formed from a representative amphiphilic random azo copolymer (PPAPE). The fractal structures were obtained from colloidal spheres of PPAPE through aggregation and structural reorganization in aqueous dispersions. In the process, the colloidal spheres with hydrophobic cores were first prepared by gradual hydrophobic aggregation of PPAPE in H2O/THF medium with a continuous increase in the water content. The fractal structures were then obtained by gradually adding an aqueous solution of NaOH (0.2 M) into the weakly acidic dispersions of the colloidal spheres to different pH values. The fractal aggregates were investigated by transmission electron microscopy (TEM), scanning electron microscopy (SEM), static light scattering (SLS), and dynamic light scattering (DLS). Photoisomerization behavior of the azobenzene units was investigated to detect the local environment around the molecular probes in the aggregates. The res...
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DOI:
10.1002/chin.200029276
发表时间:
2000-07
期刊:
ChemInform
影响因子:
--
作者:
J. Delaire;K. Nakatani
通讯作者:
J. Delaire;K. Nakatani
影响因子:
8.6
作者:
WITTEN, TA;SANDER, LM
通讯作者:
SANDER, LM
影响因子:
29.4
作者:
Taiki Yoshino;M. Kondo;J. Mamiya;Motoi Kinoshita;Yanlei Yu;T. Ikeda
通讯作者:
Taiki Yoshino;M. Kondo;J. Mamiya;Motoi Kinoshita;Yanlei Yu;T. Ikeda
影响因子:
56.9
作者:
Hosono, Nobuhiko;Kajitani, Takashi;Aida, Takuzo
通讯作者:
Aida, Takuzo
影响因子:
8.6
作者:
MEAKIN, P
通讯作者:
MEAKIN, P