Ag/polypyrrole core-shell nanostructures: Interface polymerization, characterization, and modification by gold nanoparticles

被引：131

作者：

Feng, Xiaomiao ^{[1
]}

Huang, Haiping ^{[1
]}

Ye, Qingqing ^{[1
]}

Zhu, Jun-Jie ^{[1
]}

Hou, Wenhua ^{[1
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, Key Lab Analyt Chem Life Sci, Key Lab Mesoscop Chem, Nanjing 210093, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2007年 / 111卷 / 24期

关键词：

D O I：

10.1021/jp071140z

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Polypyrrole (PPy)-coated Ag composites were synthesized through an immiscible organic/inorganic biphasic system in the presence of polyvinylpyrrolidone (PVP). Highly dispersed PPy/Ag was obtained by using interface polymerization and controlling the reactive conditions. The presence of PVP could realize the effective coating of PPy on the surface of Ag. The core-shell structure was directly confirmed by transmission electron microscopy and also characterized by techniques such as Fourier transform infrared spectroscopy and X-ray diffraction. Furthermore, three-layered Au-modified PPy-coated Ag nanocomposite was prepared through the reaction of Au colloidal solution and PPy/Ag. Moreover, Au/PPy/Ag nanocomposite was immobilized on the surface of a glassy carbon electrode and applied to construct a dopamine (DA) biosensor. The biosensor exhibited a fast amperometric response to DA with the linear range from 1 x 10(-4) to 5 x 10(-3) mol/L.

引用

页码：8463 / 8468

页数：6

共 41 条

[1] Formation process of silver-polypyrrole coaxial nanocables synthesized by redox reaction between AgNO3 and pyrrole in the presence of poly(vinylpyrrolidone) [J].