Electrochemical characterization of the self-assembled monolayer of 6-thioguanine on the mercury electrode

被引：10

作者：

Arias, ZG ^{[1
]}

Alvarez, JLM ^{[1
]}

Fonseca, JML ^{[1
]}

机构：

[1] Univ Oviedo, Dept Quim Fis & Analit, E-33071 Oviedo, Spain

来源：

ELECTROANALYSIS | 2004年 / 16卷 / 12期

关键词：

6-thioguanine; self-assembled monolayer (SAM); mercury; cyclic voltammetry;

D O I：

10.1002/elan.200302912

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A self-assembled monolayer (SAM) of 6-thioguanine (6TG) was formed on the hanging mercury drop electrode, under open circuit potential, from 6TG solutions. The SAM has been characterized by cyclic voltammetry under both in situ and ex situ conditions and the experimental data reveal that the film is a densely packed structure of chemisorbed (mercury-thiol) molecules. The presence of this SAM has no influence on the rate of outer-sphere electrode reactions but strongly inhibits inner-sphere processes. The electrode reaction involving the Fe(CN)(6)(3-/4-) couple appears reversible in a hanging mercury drop electrode coated by the 6TG-SAM.

引用

页码：1044 / 1050

页数：7

共 39 条

[31] Electrochemical behavior of gold electrodes modified with aminopurinethiol derivatives [J].

Sato, Y ;

Mizutani, F .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1999, 473 (1-2) :99-104

[32] The direct electrochemistry of cytochrome c at a hanging mercury drop electrode modified with 6-mercaptopurine [J].

Sevilla, JM ;

Pineda, T ;

Roman, AJ ;

Madueno, R ;

Blazquez, M .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1998, 451 (1-2) :89-93

[33] Characterization of 6-mercaptopurine monolayers on Hg surfaces [J].

Sevilla, JM ;

Pineda, T ;

Madueno, R ;

Roman, AJ ;

Blazquez, M .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1998, 442 (1-2) :107-112

[34] Evidence for inefficient chain-to-chain coupling in electron tunneling through liquid alkanethiol monolayer films on mercury [J].

Slowinski, K ;

Chamberlain, RV ;

Bilewicz, R ;

Majda, M .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1996, 118 (19) :4709-4710

[35] Electron tunnelling across hexadecanethiolate monolayers on mercury electrodes: Reorganization energy, structure, and permeability of the alkane/water interface [J].

Slowinski, K ;

Slowinska, KU ;

Majda, M .

JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (40) :8544-8551

[36] Through-bond and chain-to-chain coupling. Two pathways in electron tunneling through liquid alkanethiol monolayers on mercury electrodes [J].

Slowinski, K ;

Chamberlain, RV ;

Miller, CJ ;

Majda, M .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (49) :11910-11919

[37] Oxidative adsorption of n-alkanethioiates at mercury.: Dependence of adsorption free energy on chain length [J].

Stevenson, KJ ;

Mitchell, M ;

White, HS .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (07) :1235-1240

[38] SELF-ASSEMBLED MONOLAYERS IN ELECTROANALYTICAL CHEMISTRY - APPLICATION OF OMEGA-MERCAPTOCARBOXYLIC ACID MONOLAYERS FOR ELECTROCHEMICAL DETERMINATION OF ULTRALOW LEVELS OF CADMIUM(II) [J].

TURYAN, I ;

MANDLER, D .

ANALYTICAL CHEMISTRY, 1994, 66 (01) :58-63

[39]

VYDRA F, 1976, ELECTROCHEMICAL STRI, P206

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