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

[1] Surface layers of 6-thioguanine on the mercury electrode
Arias, ZG
Alvarez, JLM
Fonseca, JML
[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2002, 250 (02) : 295 - 302
[2] BARD AJ, 2001, ELECTROCHEMICAL METH, P130
[3] Bloomfield V. A., 2000, NUCL ACIDS STRUCTURE
[4] ELECTROCHEMICAL STUDIES OF OCTADECANETHIOL AND OCTANETHIOL FILMS ON VARIABLE SURFACE-AREA MERCURY SESSILE DROPS
BRUCKNERLEA, C
KIMMEL, RJ
JANATA, J
CONROY, JFT
CALDWELL, K
[J]. ELECTROCHIMICA ACTA, 1995, 40 (18) : 2897 - 2904
[5] BUESSHERMAN C, 1992, ADSORPTION MOL METAL, P77
[6] Total and free charge densities on mercury coated with self-assembled phosphatidylcholine and octadecanethiol monolayers and octadecanethiol/phosphatidylcholine bilayers
Buoninsegni, FT
Becucci, L
Moncelli, MR
Guidelli, R
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2001, 500 (1-2): : 395 - 407
[7] Alkanethiol monolayers and alkanethiol|phospholipid bilayers supported by mercury:: an electrochemical characterization
Buoninsegni, FT
Herrero, R
Moncelli, MR
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1998, 452 (01) : 33 - 42
[8] CHEMICAL FUNCTIONALITY IN SELF-ASSEMBLED MONOLAYERS - STRUCTURAL AND ELECTROCHEMICAL PROPERTIES
CHIDSEY, CED
LOIACONO, DN
[J]. LANGMUIR, 1990, 6 (03) : 682 - 691
[9] THE DYNAMIC DOUBLE-LAYER - TWO-DIMENSIONAL CONDENSATION AT THE MERCURY WATER INTERFACE
DELEVIE, R
[J]. CHEMICAL REVIEWS, 1988, 88 (04) : 599 - 609
[10] CHARACTERIZATION OF EXTREMELY LOW DEFECT DENSITY HEXADECANETHIOL MONOLAYERS ON HG SURFACES
DEMOZ, A
HARRISON, DJ
[J]. LANGMUIR, 1993, 9 (04) : 1046 - 1050

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