PMID: 15352501Sep 9, 2004Paper

Amperometric glucose biosensor based on mediated electron transfer between immobilized glucose oxidase and plasma-polymerized thin film of dimethylaminomethylferrocene on sputtered gold electrode

Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry
Yoshihiro Kase, Hitoshi Muguruma

Abstract

We propose an electron transfer-mediated amperometric enzyme biosensor based on plasma-polymerized thin film of dimethylaminomethylferrocene (DMAMF) on a sputtered gold electrode. The DMAMF plasma-polymerized film is deposited directly onto the surface of the electrode under dry conditions. The resulting thin film not only has redox sites but also is extremely thin (approximately 20 nm), adheres well onto the substrate (electrode), has a flat surface and a highly-crosslinked network structure, and is hydrophilic in nature. Glucose oxidase is densely immobilized onto the surface of DMAMF plasma-polymerized film on the gold electrode. From the electrochemical measurement, the biosensor can cover the wide range of glucose concentration (1.3 - 81 mM) at +350 mV of applied potential. The current response of the glucose biosensor was decreased by less than 5% in an aerobic solution as compared to that in an anaerobic solution. These show that the DMAMF plasma-polymerized films play a role as the electron transfer mediators between the reaction center of enzyme and the electrode.

References

Nov 15, 1988·Analytical Chemistry·N C Foulds, C R Lowe
Jan 5, 1993·Journal of Molecular Biology·H J HechtD Schomburg
Jun 22, 2000·Biotechnology and Bioengineering·H MiyachiI Karube

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Citations

Aug 1, 2006·Journal of Colloid and Interface Science·Luciano CaseliOsvaldo N Oliveira
Jun 15, 2006·Analytical Chemistry·Eric Bakker, Yu Qin
Apr 23, 2005·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Jigang GaoXiangjin Qu

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