Strategy and characteristics of polypyrrole deposited on silver substrates with silver-containing nanocomplexes

Yu Chuan Liu, Yen Chun Liu, Ya Ting Lin

研究成果: 雜誌貢獻文章同行評審

48 引文 斯高帕斯(Scopus)

摘要

In this study, we provide a strategy to electrodeposit polypyrrole (PPy) on roughened silver substrates, which was accomplished by a triangular-wave oxidation-reduction cycle (ORC) for three scans in an aqueous solution containing 0.1 N KCl. This method overcomes the conventional limitation that silver, oxidizing more readily than the pyrrole monomer, would obviously not be a good choice for the anode in the electropolymerization of PPy. It was found that Cl- and Ag-containing nanocomplexes with grain sizes smaller than 100 nm were formed on the roughened Ag substrates after ORC treatment. Meanwhile, pyrrole monomers can form self-assembled monolayers (SAMs) and further autopolymerization on these nanocomplexes. As shown in the Fourier transform infrared (FTIR) spectrum, charge transfer occurs from electrodeposited pyrrolylium nitrogen to the roughened silver. The autopolymerized PPy owns a high conductivity, as confirmed by the analyses of X-ray photoelectron spectroscopy (XPS) and surface-enhanced Raman scattering (SERS).

原文英語
頁(從 - 到)11370-11375
頁數6
期刊Journal of Physical Chemistry B
107
發行號41
出版狀態已發佈 - 十月 16 2003
對外發佈

ASJC Scopus subject areas

  • 物理與理論化學

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