Abstract
An optimized material for the development of reagentless oxygen-independent biosensors based on conducting polymers is described. Considering the prerequisites for a fast electron transfer between a redox enzyme and the electrode surface via an electron-hopping mechanism, an Os-complex-modified pyrrole derivative with a long, flexible spacer chain has been synthesized. Copolymerization of the new mediator-modified pyrrole monomer with pyrrole was optimized aiming on a higher mediator loading in the film. The feasibility of this material for the development of reagentless oxygen-independent biosensors is demonstrated by entrapment of a PQQ-dependent glucose dehydrogenase isolated from Erwinia sp. 34-1 within this electrochemically grown redox-polymer network.
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