Synthesis of dendrimer-stabilized gold-polypyrrole core-shell nanoparticles

被引：20

作者：

Bhattacharjee, RR ^{[1
]}

Chakraborty, M ^{[1
]}

Mandal, TK ^{[1
]}

机构：

[1] Indian Assoc Cultivat Sci, Polymer Sci Unit, Jadavpur, Kolkata, India

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2003年 / 3卷 / 06期

关键词：

in situ redox-polymerization; gold-polypyrrole; core-shell materials; nanoparticles; dendrimers; hollow nanospheres;

D O I：

10.1166/jnn.2003.234

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Core-shell composite nanoparticles consisting of a gold core and polypyrrole shell were prepared and stabilized with the poly(amidoamine) dendrimer. An in situ redox polymerization technique was used in which pyrrole reduced Au3+ to Au and then oxidized to polypyrrole. The presence of gold nanoparticles as a core was characterized by its surface plasmon absorption peak at 534 nm. Fourier transform infrared spectroscopy confirmed the presence of polypyrrole on the nanoparticle surfaces. The average diameter of the core-shell nanoparticle is 8.7 +/- 1.8 nm with a shell thickness of similar to1.5-2.0 nm as estimated from the transmission electron microscopy image. Dissolution of the Au core using KCN enabled the formation of hollow polymer nanospheres.

引用

页码：487 / 491

页数：5

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