摘要
本文合成了铕（Ⅲ）－色氨酸－咪唑二元及三元配合物，并对配合物进行了红外光谱分析，确定了配合物的成键特征．应用循环伏安法研究了铕（Ⅲ）稀土离子、铕（Ⅲ）与色氨酸及咪唑混合溶液、铕（Ⅲ）二元及三元配合物在玻碳电极上的电化学行为．实验结果表明，在—０．４～—１．０Ｖ（ｖｓ．ＳＣＥ）电位扫描范围内，配体为非电活性物质，铕（Ⅲ）及其与配体的混合溶液以及配合物均显示了准可逆的电子迁移过程．
Eu(Ⅲ)TryptophaneImidazole binary and triple complexes were synthesized. IR spectra indicate that the carboxy group of tryptophane and the N atom of imidazole are coordinated with Eu(Ⅲ) ion. Cyclic voltammetry was used to study the electrochemical behaviour of Eu(Ⅲ) ion, the mixture of Eu(Ⅲ) with tryptophane and imidazole, and Eu(Ⅲ) binary or triple complexes. Among the scan range of -0.4～-1.0 V (vs. SCE), all of these three kinds of systems depicted pseudoreversible electron transfer. The kinetic parameters including D and Ks were also evaluated.
出处
《电化学》
CAS
CSCD
1997年第4期408-412,共5页
Journal of Electrochemistry
基金
上海市教委重点学科基金
关键词
铕
色氨酸
咪唑
配合物
电化学行为
Eu(Ⅲ), Tryptophane, Imidazole, Complexes, Electrochemical behaviour
