Nanospace interface for the electrochemical communication between redox-active biomolecules and metal oxide electrodes

Hiroaki Shinohara

doi:10.1117/12.232138

9 February 1996 Nanospace interface for the electrochemical communication between redox-active biomolecules and metal oxide electrodes

Hiroaki Shinohara

Author Affiliations +

Proceedings Volume 2716, Smart Structures and Materials 1996: Smart Materials Technologies and Biomimetics; (1996) https://doi.org/10.1117/12.232138
Event: 1996 Symposium on Smart Structures and Materials, 1996, San Diego, CA, United States

Abstract

Oriented assembly and interfacial electron transfer of flavin coenzymes on titanium dioxide (TiO₂) electrodes have been studied to develop the smart enzyme sensors or reactors. It was demonstrated that FMN and FAD were chemically adsorbed via phosphate moiety on TiO₂ surface in weak acidic solutions to make monolayers. Quasi reversible slow electron transfer was observed on the FMN or FAD-adsorbed TiO₂ electrodes. It was further demonstrated that the FMN-assembled TiO₂ electrode electrochemically catalyzed the oxidation of NADH. The FMN-assembled TiO₂ was then combined with some dehydrogenases and NADH to perform amperometric sensing for enzyme substrates. The results suggest that the assembled flavin coenzyme might be promising for a nanospace interface to achieve electrochemical communication between redox active biomolecules and the metal oxide electrodes.

Citation Download Citation

Hiroaki Shinohara "Nanospace interface for the electrochemical communication between redox-active biomolecules and metal oxide electrodes", Proc. SPIE 2716, Smart Structures and Materials 1996: Smart Materials Technologies and Biomimetics, (9 February 1996); https://doi.org/10.1117/12.232138

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