Ascorbate Oxidase-catalyzed Electrochemical Reduction of Dioxygen Using 2,6-Dichloroindophenol as an Electron-transfer Mediator

2006 ◽  
Vol 35 (11) ◽  
pp. 1232-1233 ◽  
Author(s):  
Kenichi Murata ◽  
Misa Sugihara ◽  
Nobuhumi Nakamura ◽  
Hiroyuki Ohno
Keyword(s):  
Electron Transfer ◽  
Electrochemical Reduction ◽  
Ascorbate Oxidase ◽  
Electron Transfer Mediator

scholarly journals RuIII(edta) complexes as molecular redox catalysts in chemical and electrochemical reduction of dioxygen and hydrogen peroxide: inner-sphere versus outer-sphere mechanism

RSC Advances ◽  
2021 ◽  
Vol 11 (35) ◽  
pp. 21359-21366
Author(s):  
Debabrata Chatterjee ◽  
Marta Chrzanowska ◽  
Anna Katafias ◽  
Maria Oszajca ◽  
Rudi van Eldik
Keyword(s):  
Hydrogen Peroxide ◽  
Electron Transfer ◽  
Electrochemical Reduction ◽  
Molecular Oxygen ◽  
Outer Sphere ◽  
Transfer Processes ◽  
Edta Complexes ◽  
Inner Sphere ◽  
Electron Transfer Processes ◽  
Sphere Mechanism

[RuII(edta)(L)]2–, where edta4– =ethylenediaminetetraacetate; L = pyrazine (pz) and H2O, can reduce molecular oxygen sequentially to hydrogen peroxide and further to water by involving both outer-sphere and inner-sphere electron transfer processes.

Biosensor Based on TTF@ SiO2 Nanoparticles as Electron Transfer Mediator for the Determination of Glucose1

2006 ◽  
Vol 22 (4) ◽  
pp. 474-478 ◽  
Author(s):  
X LI ◽  
Y XIAN ◽  
H MIN ◽  
C LI ◽  
Z XIE ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Sio2 Nanoparticles ◽  
Electron Transfer Mediator

scholarly journals Intramolecular electron transfer in ascorbate oxidase is enhanced in the presence of oxygen.

1994 ◽  
Vol 269 (37) ◽  
pp. 22933-22936 ◽  
Author(s):  
O. Farver ◽  
S. Wherland ◽  
I. Pecht
Keyword(s):  
Electron Transfer ◽  
Ascorbate Oxidase ◽  
Intramolecular Electron Transfer

Tetrabutylammonium–Tetracyanoquinodimethane as Electron-Transfer Mediator in Amperometric Glucose Sensor

1996 ◽  
Vol 53 (3) ◽  
pp. 296-302 ◽  
Author(s):  
Changqing Sun ◽  
Wenbe Song ◽  
Duo Zhao ◽  
Qian Gao ◽  
Hongding Xu
Keyword(s):  
Electron Transfer ◽  
Glucose Sensor ◽  
Electron Transfer Mediator ◽  
Amperometric Glucose Sensor

Electrochemistry and application of a novel monosubstituted squarate electron-transfer mediator in a glucose oxidase-doped poly(phenol) sensor

2004 ◽  
Vol 76 (4) ◽  
pp. 789-799 ◽  
Author(s):  
E. I. Iwuoha ◽  
A. R. Williams-Dottin ◽  
L. A. Hall ◽  
A. Morrin ◽  
G. N. Mathebe ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Glucose Oxidase ◽  
Surface Concentration ◽  
Film Deposition ◽  
Polymerization Process ◽  
Platinum Electrodes ◽  
Electron Transfer Mediator ◽  
Standard Rate ◽  
Amperometric Glucose Biosensors

Electrosynthetic poly(phenol) nanofilms were deposited in situ on platinum electrodes in the presence and absence of glucose oxidase. The synthesis charges and currents of the nonconducting polymer films were recorded at various applied potentials for films grown from 25 –100 mM phenol concentrations. Film parameters such as the standard rate constant for film deposition, film thickness, and surface concentration of the poly(phenol) films were evaluated from the cyclic and step voltammograms of the polymerization process. A novel electron-transfer mediator consisting of monosubstituted 4-hydroxycyclobut-3-ene-1,2-dione (squarate) was used as a mediator for Pt/poly(phenol) nanofilm/GOx amperometric glucose biosensors. Amperometric responses for 3-diphenylamino-4-hydroxycyclobut-3-ene-1,2-dione (diphenylaminosquarate: E°'=of +328 mV/Ag-AgCl at pH 7.0)-mediated systems were measured by both steady-state amperometric and cyclic voltammetry. The sensor sensitivity was calculated to be 558 nA cm−2 (µM)−1.

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