Modification of electrochemically roughened Au(111) by underpotentially deposited silver and its effect on the subsequent electrodeposition of polypyrrole

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13 引文 斯高帕斯(Scopus)

摘要

In this study, electrochemically roughened Au(111) is modified with underpotential deposition (UPD) silver for the first time. The formation of self-assembled monolayers of pyrrole monomers and subsequently further autopolymerization are found on the UPD-Ag-modified gold surfaces. The presence of UPD Ag improves the stability of polypyrrole (PPy) monolayers against desorption in a sonicating bath at elevated temperature. Furthermore, the nucleation and growth mechanism for PPy electropolymerized on UPD-Ag-modified Au is distinguishable from that on unmodified Au. The corresponding conductivity and the Raman intensity of PPy electropolymerized on UPD-Ag-modified Au increase by about 2-fold and 4-fold, respectively.

原文英語
頁(從 - 到)6888-6893
頁數6
期刊Langmuir
19
發行號17
DOIs
出版狀態已發佈 - 八月 19 2003
對外發佈

ASJC Scopus subject areas

  • 膠體和表面化學
  • 物理與理論化學

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