Surface-enhanced Raman scattering investigation of the adsorption of 2-mercaptobenzoxazole on smooth copper surfaces doped with silver colloidal nanoparticles

被引：47
作者：
Pergolese, B
Muniz-Miranda, M
Bigotto, A
机构：
[1] Univ Trieste, Dept Chem Sci, I-34127 Trieste, Italy
[2] Univ Florence, Dept Chem, I-50019 Sesto Fiorentino, Italy
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2006年 / 110卷 / 18期
关键词：
D O I：
10.1021/jp0605698
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：
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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页码：9241 / 9245
页数：5
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