Surface-enhanced Raman Spectra of C70 Molecules Adsorbed on the Surface of Copper

Abstract

Abstract: The SERS effect of C₇₀ molecules adsorbed on the surface of copper was reported for the first time. By comparing with the normal Raman and the SERS on the surface of silver, it sounds reasonable that the adsorption between the copper and C₇₀ is a physical adsorption, and electromagnetic enhance mechanism dominates over the surface enhanced effect. The difference of relative intensities between the SERS spectra of C₇₀ adsorbed on the silver surface and copper surface originates from different adsorption states of C₇₀ molecules on them. Judged by the vibration mode of C₇₀, the adsorption states on the two different metal surfaces could be described as near “horizontal” and near “upending” directions, respectively. This investigation is valuable for the research of interaction between C₇₀ molecules and different metal surfaces.

Key words: C₇₀ molecules, Copper liner, Silver liner, Raman spectrum, SERS

CLC Number:

O433

TrendMD:

GAO Ying, ZHANG Zhen-Long, BAI Ying, MO Yu-Jun . Surface-enhanced Raman Spectra of C₇₀ Molecules Adsorbed on the Surface of Copper[J]. Chem. J. Chinese Universities, 2004, 25(10): 1920.

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Surface-enhanced Raman Spectra of C₇₀ Molecules Adsorbed on the Surface of Copper

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