Surface-Enhanced Raman Scattering Investigation of the Adsorption of 2-Mercaptobenzoxazole on Smooth Copper Surfaces Doped with Silver Colloidal Nanoparticles

The adsorption of 2-mercaptobenzoxazole on copper has been investigated by means of surface-enhanced Raman scattering (SERS) by doping smooth copper surfaces with silver colloidal nanoparticles. The metal surfaces have been characterized by means of atomic force microscopy measurements. The compound...

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Published inThe journal of physical chemistry. B Vol. 110; no. 18; pp. 9241 - 9245
Main Authors Pergolese, Barbara, Muniz-Miranda, Maurizio, Bigotto, Adriano
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 11.05.2006
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Summary:The adsorption of 2-mercaptobenzoxazole on copper has been investigated by means of surface-enhanced Raman scattering (SERS) by doping smooth copper surfaces with silver colloidal nanoparticles. The metal surfaces have been characterized by means of atomic force microscopy measurements. The compound adsorbs on the Cu/Ag surfaces in its ionized thiolic form, adopting a tilted orientation with respect to the metal surface. The anion is chemisorbed through the sulfur and nitrogen atoms on the smooth copper surface, and the silver colloidal nanoparticles only enhance the Raman signal due to the electromagnetic mechanism. SERS data have been interpreted with the help of DFT calculations on models of the ligand bound to copper adclusters.
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ISSN:1520-6106
1520-5207
DOI:10.1021/jp0605698