Relationship between crystalline orientations of gold and surface-enhanced Raman scattering spectroscopy of polypyrrole and mechanism of roughening procedure on gold via cyclic voltammetry

Yu Chuan Liu, Li Yuan Jang

研究成果: 雜誌貢獻文章同行評審

43 引文 斯高帕斯(Scopus)

摘要

The polypyrrole (PPy) films were electrochemically deposited on roughened gold substrates with different predominant crystalline orientations of (111) and (220), respectively. Gold was roughened via a cyclic voltammetry procedure. The result indicates that the (220) crystalline orientation of gold was partially changed into (111) one after gold was roughened with oxidation-reduction cycles (ORC) treatment. The surface-enhanced Raman scattering (SERS) spectroscopy of PPy deposited on gold with predominant (111) orientation exhibits higher intensity and more excellent resolution. Meanwhile, the redox behavior of gold and the resulting complex in ORC were strongly sensitive to the crystalline orientation. A mechanism of the roughening procedure on gold was also proposed to illustrate the resulting complex and its effect on the SERS enhancement.

原文英語
頁(從 - 到)6748-6753
頁數6
期刊Journal of Physical Chemistry B
106
發行號26
DOIs
出版狀態已發佈 - 7月 4 2002
對外發佈

ASJC Scopus subject areas

  • 物理與理論化學

指紋

深入研究「Relationship between crystalline orientations of gold and surface-enhanced Raman scattering spectroscopy of polypyrrole and mechanism of roughening procedure on gold via cyclic voltammetry」主題。共同形成了獨特的指紋。

引用此