SCANNING TUNNELING MICROSCOPIC PROBING OF SURFACE FOULING DURING THE OXIDATION OF NICOTINAMIDE COENZYMES

被引：56

作者：

WANG, J ^{[1
]}

ANGNES, L ^{[1
]}

MARTINEZ, T ^{[1
]}

机构：

[1] USP,INST QUIM,SAO PAULO,BRAZIL

来源：

BIOELECTROCHEMISTRY AND BIOENERGETICS | 1992年 / 29卷 / 02期

关键词：

D O I：

10.1016/0302-4598(92)80069-S

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Scanning tunneling microscopy is used to image adsorbed products resulting from the electro-oxidation of dihydronicotinamide adenine dinucleotide (NADH) on highly oriented pyrolytic graphite. Defined images of the passivated layer, with scattered protrusions of different sizes and shapes, are observed. The exact structure is strongly dependent on the anodization time, NADH concentration, or anodization potential, with higher surface coverages being observed for higher charges (passing during the anodization). The implications of these findings on the analytical/sensing utility of nicotinamine coenzymes are discussed.

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页码：215 / 221

页数：7

相关论文

共 11 条

[1] SCANNING TUNNELING MICROSCOPY AND ELECTROCHEMISTRY [J].

ARVIA, AJ .

SURFACE SCIENCE, 1987, 181 (1-2) :78-91

[2] STUDY OF ELECTROCHEMICAL OXIDATION OF REDUCED NICOTINAMIDE ADENINE-DINUCLEOTIDE [J].

BLAEDEL, WJ ;

JENKINS, RA .

ANALYTICAL CHEMISTRY, 1975, 47 (08) :1337-1343

[3] INSITU SCANNING TUNNELING MICROSCOPY OF POLYCRYSTALLINE PLATINUM-ELECTRODES UNDER POTENTIAL CONTROL - COPPER ELECTRODEPOSITION AND PYRROLE ELECTROPOLYMERIZATION [J].

FAN, FRF ;

BARD, AJ .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1989, 136 (11) :3216-3222

[4] CHEMICALLY MODIFIED ELECTRODES FOR THE ELECTROCATALYTIC OXIDATION OF NICOTINAMIDE COENZYMES [J].

GORTON, L .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1986, 82 :1245-1258

[5]

KAUFFMANN JM, 1992, BIOANALYTICAL APPLIC, V36, P63

[6] EFFECTS OF ADSORPTION, ELECTRODE MATERIAL, AND OPERATIONAL VARIABLES ON OXIDATION OF DIHYDRONICOTINAMIDE ADENINE-DINUCLEOTIDE AT CARBON ELECTRODES [J].

MOIROUX, J ;

ELVING, PJ .

ANALYTICAL CHEMISTRY, 1978, 50 (08) :1056-1062

[7] VOLTAMMETRIC MEASUREMENT OF REDUCED NICOTINAMIDE-ADENINE NUCLEOTIDES AND APPLICATION TO AMPEROMETRIC MEASUREMENT OF ENZYME REACTIONS [J].

THOMAS, LC ;

CHRISTIAN, GD .

ANALYTICA CHIMICA ACTA, 1975, 78 (02) :271-276

[8] INSITU ELECTROCHEMICAL RENEWAL OF GLASSY-CARBON ELECTRODES [J].

WANG, J ;

LIN, MS .

ANALYTICAL CHEMISTRY, 1988, 60 (05) :499-502

[9] SCANNING TUNNELING MICROSCOPIC INVESTIGATION OF SURFACE FOULING OF GLASSY-CARBON SURFACES DUE TO PHENOL OXIDATION [J].

WANG, J ;

MARTINEZ, T ;

YANIV, DR ;

MCCORMICK, LD .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1991, 313 (1-2) :129-140

[10] SCANNING PROBE MICROSCOPIES FOR HIGH-RESOLUTION CHARACTERIZATION OF ELECTROCHEMICAL SENSORS - PLENARY LECTURE [J].

WANG, J .

ANALYST, 1992, 117 (08) :1231-1233