Study of interaction between aspartic acid and silver by surface-enhanced Raman scattering on H2O and D2O sols

被引：11

作者：

Arenas, JF ^{[1
]}

Castro, JL ^{[1
]}

Otero, JC ^{[1
]}

Marcos, JI ^{[1
]}

机构：

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

来源：

BIOPOLYMERS | 2001年 / 62卷 / 05期

关键词：

surface-enhanced Raman scattering; aspartic acid; Raman spectrum; vibrational spectrum;

D O I：

10.1002/bip.1019

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 [生物化学与分子生物学]; 081704 [应用化学];

摘要：

Three different surface-enhanced Raman scattering (SERS) spectra are recorded for aspartic acid on H2O silver sols under different concentrations and pH values. The analysis of the results shows that it interacts with the metal surface in its dianionic form in two different ways, depending on the pH and concentration. Moreover, in some cases the fumarate anion is detected, which results from the chemical surface transformation of the aspartate. The N-deuterated aspartic acid adsorbed on the D2O silver sols gives rise to only one SERS spectrum as a consequence of the interaction of amino and carboxylate functional groups of the dianion with the metal, independent of the concentration and pD. (C) 2001 John Wiley & Sons, Inc.

引用

页码：241 / 248

页数：8

共 27 条

[1]

SERS OF DICARBOXYLIC-ACIDS ON SILVER SOLS [J].