Journal
APPLIED PHYSICS LETTERS
Volume 96, Issue 26, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3458698
Keywords
biochemistry; charge exchange; electrochemical electrodes; electrochemistry; graphene; nanostructured materials; oxidation; proteins; reduction (chemical); voltammetry (chemical analysis)
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Funding
- National Science Foundation through NSF-CREST [0734232]
- Division Of Human Resource Development
- Direct For Education and Human Resources [0734232] Funding Source: National Science Foundation
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We report the direct electron transfer of cytochrome c (Cyt c) observed at graphene electrodes. Graphene nanosheets were chemically synthesized and immobilized on to a glassy carbon electrode. Cyclic voltammetry of Cyt c in phosphate buffered saline was performed at these electrodes. Results indicated a pair of reversible redox waves with a peak-to-peak separation value of 0.07 V in a diffusion controlled electrochemical process. Furthermore, the voltammetric response of these electrodes in Cyt c were found to be stable over time with negligible electrode fouling toward Cyt c. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3458698]
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