Synthesis and characterization of polypyrrole/Au nanocomposites by microemulsion polymerization

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• 作者：Libo Sun ; Yuanchang Shi ; ^{yuanchangshi@sdu.edu.cn} ; Bo Li ; Linya Chu ; Zhaopin He ; Jiurong Liu
• 关键词：Polypyrrole/Au nanocomposites ; Microemulsion polymerization ; Tetrahedron structure
• 刊名：Colloids and Surfaces A ; Physicochemical and Engineering Aspects
• 出版年：2012
• 期刊代码：22_09277757
• 类别：ch
• 出版时间：5 March, 2012
• 卷：397
• 期：Complete
• 页码：8-11
• 文件大小：432 K

摘要

A microemulsion polymerization method to synthesize polypyrrole/Au nanocomposites by direct oxidation of pyrrole using HAuCl₄ as the oxidant is presented. Sodium dodecyl sulfate and n-pentanol is used as the surfactant and the cosurfactant, respectively. The obtained nanocomposite particles have a tetrahedron structure, where Au dispersed as ultra-small clusters of elementary gold are encapsulated by polypyrrole. The morphologies and structures of the nanocomposites have been characterized by high-resolution transmission electron microscopy, transmission electron microscopy, X-ray diffraction, and UV-Vis spectroscopy. Conductivity analysis shows that the conductivity of polypyrrole/Au nanocomposites is 12.6 卤 0.06 S/cm.