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
复制
发表时间:
2011-10
期刊:
影响因子:
5.5
通讯作者:
Wang, Xiaogong
Wang, Xiaogong
中科院分区:
化学1区
文献类型:
--
作者:
Li, Nan;Li, Yaobang;Wang, Xiaogong

文献摘要

参考文献

被引文献

相似文献

本文首次报道了一种具有代表性的两亲性无规偶氮共聚物(PPAPE)形成的一系列分形结构的观察结果。PPAPE胶体球在水分散体系中通过聚集和结构重组形成分形结构。在此过程中,PPAPE在H2O/THF介质中,随着水含量的不断增加,逐渐疏水聚集,得到了具有疏水核的胶体球。然后通过逐渐加入NaOH(0.2 M)水溶液到胶体球的弱酸性分散体中至不同pH值来获得分形结构。通过透射电子显微镜(TEM)、扫描电子显微镜(SEM)、静态光散射(SLS)和动态光散射(DLS)对分形聚集体进行了研究。研究了偶氮苯单元的光异构化行为,以检测聚集体中分子探针周围的局部环境。剩下的...
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...
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
DOI: 10.1103/physrevlett.47.1400
发表时间: 1981-01-01
影响因子: 8.6
作者:
WITTEN, TA;SANDER, LM
通讯作者: SANDER, LM
DOI: 10.1002/adma.200902879
发表时间: 2010-03
期刊: Advanced Materials
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
DOI: 10.1126/science.1195302
发表时间: 2010-11-05
期刊: SCIENCE
影响因子: 56.9
作者:
Hosono, Nobuhiko;Kajitani, Takashi;Aida, Takuzo
通讯作者: Aida, Takuzo
DOI: 10.1103/physrevlett.51.1119
发表时间: 1983-01-01
影响因子: 8.6
作者:
MEAKIN, P
通讯作者: MEAKIN, P