Infrared and Raman spectra of 4-cyanobenzoic acid on powdered silver

被引：35

作者：

Han, SW

Han, HS

Kim, K ^{[1
]}

机构：

[1] Seoul Natl Univ, Dept Chem, Seoul 151742, South Korea

[2] Seoul Natl Univ, Ctr Mol Catalysis, Seoul 151742, South Korea

来源：

VIBRATIONAL SPECTROSCOPY | 1999年 / 21卷 / 1-2期

基金：

新加坡国家研究基金会;

关键词：

silver powder; 4-cyanobenzoic acid; DRIFT; SERS; SEM; STM;

D O I：

10.1016/S0924-2031(99)00066-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We have attempted to record the infrared and Raman spectra of 4-cyanobenzoic acid (4CBA) adsorbed on 2-mu m-sized silver particles. The diffuse reflectance infrared Fourier transform (DRIFT) spectrum taken for the sample was little different from the reflection-absorption infrared (RAIR) spectrum taken for the same molecules on vacuum-evaporated thick silver films, suggesting that the usual surface selection rule should be applicable even to the surface of fine metal particles. The Raman spectrum of 4CBA on powdered silver was a surface-enhanced Raman (SER) spectrum, exhibiting little difference from that taken on vacuum-evaporated thin, rough silver films. Thus, the commercially available powdered silver seemed to be an efficient substrate for the infrared and Raman spectroscopic characterization of molecular adsorbates prepared in a similar way on silver surfaces. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：133 / 142

页数：10

共 31 条

[1] SURFACE-ENHANCED RAMAN-SCATTERING (SERS) ON CHEMICALLY PREPARED SILVER FILM [J].