Th-GSH单层膜修饰电极和多巴胺的准可逆响应

方程; 栾政; 张悟铭; 周性尧

doi:10.61558/2993-074X.1463

电化学 >

2002 , Vol. 8 >Issue 3: 301 - 305

DOI: https://doi.org/10.61558/2993-074X.1463

研究论文

Th-GSH单层膜修饰电极和多巴胺的准可逆响应

方程 ,
栾政 ,
张悟铭 ,
周性尧

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武汉大学化学系,武汉大学化学系,武汉大学化学系,武汉大学化学系湖北武汉430072 ,湖北武汉430072 ,湖北武汉430072 ,湖北武汉430072

收稿日期: 2002-08-28

修回日期: 2002-08-28

网络出版日期: 2002-08-28

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Thionine-glutathione Self-assembly Monolayer Modified Electrdoe and the Quasi-reversible Response of Dopamine

FANG Cheng ,
LUAN Zheng ,
ZHANG Wu_Ming ,
ZHOU Xing_Yao

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(Department of Chemistry, Wuhan University, Wuhan 430072,China

Received date: 2002-08-28

Revised date: 2002-08-28

Online published: 2002-08-28

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摘要

在谷胱甘肽 (GSH)自组装膜 (SAM )修饰的金电极表面共价固定硫堇 (Th)分子 ,研究其电化学性质及相关应用 ,发现该电极对多巴胺 (DO)有准可逆响应 .利用多巴胺的还原峰可在较高浓度的抗环血酸 (AA)存在条件下 (10 0倍 )对多巴胺进行检测 ,线性响应范围为 1.0～ 30 0 μmol·L- 1.

关键词： 谷胱甘肽; 硫堇; 多巴胺; 抗环血酸; 自组装膜

本文引用格式

方程 , 栾政 , 张悟铭 , 周性尧 . Th-GSH单层膜修饰电极和多巴胺的准可逆响应[J]. 电化学, 2002 , 8(3) : 301 -305 . DOI: 10.61558/2993-074X.1463

Abstract

Thionine was bound onto a glutathione monolayer self_assembled on the surface of a gold electrode previously, the electrochemical characteristics of which were studied. It was found that dopamine had a quasi_reversible response and cathodic characterstics peak could be used to determine the concentration of dopamine in the range of 1.0～300 μmol·L -1 in the presence of a higher concentration of ascorbic acid.

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