Direct electrochemistry of cytochrome c at nanocrystalline boron-doped diamond

Shannon Haymond; Gerald T. Babcock; Greg M. Swain

doi:10.1021/ja027019h

Direct electrochemistry of cytochrome c at nanocrystalline boron-doped diamond

Shannon Haymond, Gerald T. Babcock, Greg M. Swain^*

^*Corresponding author for this work

Pathology

Research output: Contribution to journal › Article › peer-review

88 Scopus citations

Abstract

Direct electron transfer of horse heart cytochrome c is measured at a nanocrystalline boron-doped diamond thin-film electrode. A quasi-reversible, diffusion-controlled cyclic voltammetric response is observed for untreated diamond. The peak currents change linearly with the concentration, and importantly, there is no electrode fouling. The results, observed for a hydrogen-terminated and uncharged surface, (i.e., no ionizable carbon-oxygen functional groups), raise interesting questions about the necessary surface interactions of cytochrome c for relatively rapid electrode kinetics.

Original language	English (US)
Pages (from-to)	10634-10635
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	124
Issue number	36
DOIs	https://doi.org/10.1021/ja027019h
State	Published - Sep 11 2002

Funding

This work has been financially supported by the Deutsche Forschungs-gemeinschaft (DFG). The technical assistance of Mr. S. Schürmann from Lechler GmbH (Metzingen, Germany) as well as the helpful discussion on spray characterization are gratefully acknowledged. The authors thank Dr. K. Trommer from Vecur e.V. (Freiberg, Germany) for providing the disilane precursors and Dr. A. Zern from the Max Planck Institut für Metallforschung (Stuttgart, Germany) for the TEM-EELS imaging.

ASJC Scopus subject areas

General Chemistry
Biochemistry
Catalysis
Colloid and Surface Chemistry

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10.1021/ja027019h

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title = "Direct electrochemistry of cytochrome c at nanocrystalline boron-doped diamond",

abstract = "Direct electron transfer of horse heart cytochrome c is measured at a nanocrystalline boron-doped diamond thin-film electrode. A quasi-reversible, diffusion-controlled cyclic voltammetric response is observed for untreated diamond. The peak currents change linearly with the concentration, and importantly, there is no electrode fouling. The results, observed for a hydrogen-terminated and uncharged surface, (i.e., no ionizable carbon-oxygen functional groups), raise interesting questions about the necessary surface interactions of cytochrome c for relatively rapid electrode kinetics.",

author = "Shannon Haymond and Babcock, {Gerald T.} and Swain, {Greg M.}",

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N2 - Direct electron transfer of horse heart cytochrome c is measured at a nanocrystalline boron-doped diamond thin-film electrode. A quasi-reversible, diffusion-controlled cyclic voltammetric response is observed for untreated diamond. The peak currents change linearly with the concentration, and importantly, there is no electrode fouling. The results, observed for a hydrogen-terminated and uncharged surface, (i.e., no ionizable carbon-oxygen functional groups), raise interesting questions about the necessary surface interactions of cytochrome c for relatively rapid electrode kinetics.

AB - Direct electron transfer of horse heart cytochrome c is measured at a nanocrystalline boron-doped diamond thin-film electrode. A quasi-reversible, diffusion-controlled cyclic voltammetric response is observed for untreated diamond. The peak currents change linearly with the concentration, and importantly, there is no electrode fouling. The results, observed for a hydrogen-terminated and uncharged surface, (i.e., no ionizable carbon-oxygen functional groups), raise interesting questions about the necessary surface interactions of cytochrome c for relatively rapid electrode kinetics.

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Direct electrochemistry of cytochrome c at nanocrystalline boron-doped diamond

Abstract

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