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Direct Electron Transfer between Carbon Electrodes, Immobilized Mediator and an Immobilized Viologen‐accepting Pyridine Nucleotide Oxidoreductase
Author(s) -
Günther Helmut,
Paxinos Antonios S.,
Schulz Michael,
van Dijk Cees,
Simon Helmut
Publication year - 1990
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199010531
Subject(s) - electron transfer , viologen , electrode , chemistry , covalent bond , redox , cathode , carbon fibers , oxidoreductase , bioelectrochemistry , photochemistry , inorganic chemistry , chemical engineering , electrochemistry , materials science , organic chemistry , enzyme , composite number , composite material , engineering
The electron transfer between electrodes and the redox‐active prosthetic groups of oxidoreductases is usually too slow to be measurable, unless a mediator is used. Now, a mediator and the enzyme have been covalently immobilized on a functionalized carbon electrode. The electrons can thus flow from the cathode to the oxidoreductase via a “molecular wire”. The use of carbon felt having a larger inner surface area as electrode affords current densities at the lower end of the range used in industrial processes.