ENZYME CATALYSIS AT HYDROGEL-MODIFIED ELECTRODES WITH REDOX POLYMER MEDIATOR

被引:73
作者
CALVO, EJ [1 ]
DANILOWICZ, C [1 ]
DIAZ, L [1 ]
机构
[1] UNIV BUENOS AIRES,FAC FARM & BIOQUIM,RA-1113 BUENOS AIRES,ARGENTINA
来源
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1993年 / 89卷 / 02期
关键词
D O I
10.1039/ft9938900377
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
Direct electrical communication between a new acrylamide-acrylic acid ferrocene copolymer and the enzyme cofactor FADH2 of glucose oxidase is demonstrated. Subsequent catalysis for the anaerobic oxidation of glucose at the co-reticulated enzyme-polymer-modified electrode is shown for polymer-coated glassy carbon and for a composite carbon-paste electrode. A theoretical framework for the kinetic analysis of the reagentless amperometric enzyme electrode is outlined and the model is validated with experimental results. Based on this analysis, kinetic data for the ping-pong glucose oxidase mechanism are discussed for the immobilized enzyme. A comparison of immobilized enzyme electrodes is presented with a redox polymer and soluble substituted-ferrocene redox mediator of similar formal redox potential.
引用
收藏
页码:377 / 384
页数:8
相关论文
共 50 条
  • [1] THE KINETICS OF ELECTRON-TRANSFER IN THE THIONINE-COATED ELECTRODE
    ALBERY, WJ
    BOUTELLE, MG
    COLBY, PJ
    HILLMAN, AR
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1982, 133 (01): : 135 - 145
  • [2] AMPEROMETRIC ENZYME ELECTRODES .5. THE HOMOGENEOUS MEDIATED MECHANISM
    ALBERY, WJ
    BARTLETT, PN
    DRISCOLL, BJ
    LENNOX, RB
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1992, 323 (1-2) : 77 - 102
  • [3] SENSITIVE ENZYME ELECTRODES
    ALBERY, WJ
    BOUTELLE, MG
    DURRANT, SLT
    FILLENZ, M
    HOPKINS, AR
    MANGOLD, BP
    [J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1990, 333 (1628): : 49 - 61
  • [4] AVRAMEAS S, 1985, AFFINITY CHROMATOGR, P64
  • [5] ENZYME ELECTRODE STUDIES OF GLUCOSE-OXIDASE MODIFIED WITH A REDOX MEDIATOR
    BARTLETT, PN
    BRADFORD, VQ
    WHITAKER, RG
    [J]. TALANTA, 1991, 38 (01) : 57 - 63
  • [6] SMALL-VOLUME ELECTROCHEMICAL-CELL DESIGNED FOR ROTATING-DISK STUDIES IN BIOELECTROCHEMISTRY
    BARTLETT, PN
    WHITAKER, RG
    [J]. ANALYTICAL CHEMISTRY, 1989, 61 (24) : 2803 - 2805
  • [7] COVALENT BINDING OF ELECTRON RELAYS TO GLUCOSE-OXIDASE
    BARTLETT, PN
    WHITAKER, RG
    GREEN, MJ
    FREW, J
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1987, (20) : 1603 - 1604
  • [8] DIGITAL-SIMULATION OF HOMOGENEOUS ENZYME-KINETICS FOR AMPEROMETRIC REDOX-ENZYME ELECTRODES
    BATTAGLINI, F
    CALVO, EJ
    [J]. ANALYTICA CHIMICA ACTA, 1992, 258 (01) : 151 - 160
  • [9] BATTAGLINI F, UNPUB J ELECTROANAL
  • [10] Bright HB., 1975, ENZYMES, V12B, P421