Voltammetric studies on the interaction of epinephrine with DNA base on a glassy carbon electrode modified with Au nanoparticles

被引：3
|
作者：
Wang, Xueliang [1 ]
Li, Jinjin [2 ]
Wang, Tao [2 ]
Yu, Zhangyu [1 ,2 ]
机构：
[1] Heze Univ, Dept Chem & Chem Engn, Heze 274015, Shandong, Peoples R China
[2] Qufu Normal Univ, Sch Chem & Chem Engn, Qufu 273165, Shandong, Peoples R China
来源：
IONICS | 2015年 / 21卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Epinephrine; DNA; Interaction; Voltammetry; Au nanoparticles; SELECTIVE DETERMINATION; ASCORBIC-ACID; URIC-ACID; DOPAMINE; NOREPINEPHRINE; NANOTUBES; CATECHOLAMINE; DAMAGE; FILM;
D O I：
10.1007/s11581-014-1243-8
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 interaction of epinephrine (EP) with DNA, including double-strand DNA (dsDNA) and single-strand DNA (ssDNA) were investigated both in Mcllvaine buffer solution and on a glassy carbon electrode (GCE) modified with Au nanoparticles (nanoAu/GCE). In pH 7.0 Mcllvaine buffer solution, EP had a sensitive oxidation current peak at 0.162 V (vs. SCE) on the nanoAu/GCE. Factors influencing the interaction in Mcllvaine buffer solution were optimized, and some electrochemical parameters, such as number of electron transferred, the standard rate constant of the electrode reaction (K (s)) were compared in the presence and absence of DNA. The binding ratio (m) of EP with DNA and the equilibrium constant (beta) were also calculated. EP did not interact with DNA via intercalation mode.
引用
收藏
页码：1105 / 1110
页数：6
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