Surface-enhanced Raman scattering of D-penicillamine on silver colloids

被引：21

作者：

López-Ramírez, MR ^{[1
]}

Arenas, JF ^{[1
]}

Otero, JC ^{[1
]}

Castro, JL ^{[1
]}

机构：

[1] Univ Malaga, Fac Sci, Dept Phys Chem, E-29071 Malaga, Spain

来源：

JOURNAL OF RAMAN SPECTROSCOPY | 2004年 / 35卷 / 05期

关键词：

SERS; D-penicillamine; vibrational assignments; conformation; metal interactions;

D O I：

10.1002/jrs.1138

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The Raman spectra of D-penicillamine in H2O and D2O were recorded under different acidity conditions, together with the respective SERS spectra on silver colloids. Vibrational assignments of the spectra obtained are proposed. The analysis of the SERS spectra shows that two of the conformers of D-penicillamine are adsorbed at least in their dianionic forms, and a stable chemical bond is established between the sulfur atom and silver. Additionally, carboxylate and amino groups also interact with the metal. The pK(a2) and pK(a3) apparent values are decreased upon adsorption. Copyright (C) 2004 John Wiley Sons, Ltd.

引用

页码：390 / 394

页数：5

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