SERS on carbon chain segments: monitoring locally surface chemistry

被引：156

作者：

Kudelski, A

Pettinger, B

机构：

[1] Max Planck Gesell, Fritz Haber Inst, Dept Phys Chem, D-14195 Berlin, Germany

[2] Univ Warsaw, Dept Chem, PL-02093 Warsaw, Poland

来源：

CHEMICAL PHYSICS LETTERS | 2000年 / 321卷 / 5-6期

关键词：

D O I：

10.1016/S0009-2614(00)00330-4

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：

Carbon films deposited (at elevated temperatures) on SERS active metal substrates show remarkable fluctuations in Raman spectra, if a Raman microscope is used. In subsequently recorded spectra distinct sets of intense, but rather narrow Raman lines appear, which are related to vibrations of corresponding carbonaceous groups. These spectral fluctuations evidence an enduring surface chemistry producing a variety of carbon chain configurations, which get temporarily in contact with metal sites, the so-called 'hot spots', that exhibit extremely large surface enhancements. (C) 2000 Elsevier Science B.V. All rights reserved.

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页码：356 / 362

页数：7

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