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In Situ Observation of Time Dependent Electrochemical Activity of Cytochrome c at Bare Indium-Tin-Oxide Electrodes by Cyclic Voltammetry and Slab Optical Waveguide Spectroscopy

Yusuke AYATO, Akiko TAKATSU, Kenji KATO, Naoki MATSUDA

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Summary :

In situ observation of electrochemical activity and time dependent characteristics of cytochrome c (cyt c) was carried out in 0.01 M phosphate buffered saline (PBS, pH 7.4) containing 20 µM cyt c solutions at bare indium-tin-oxide (ITO) electrodes by using a cyclic voltammetry (CV) and a slab optical waveguide (SOWG) spectroscopy. The bare ITO electrodes could retain the electrochemical activity of cyt c in the PBS solutions, indicating the great advantage of using ITO electrodes against other electrode materials, such as gold (Au). The CV curves and simultaneously observed the time-resolved SOWG absorption spectra in the consecutive cycles implied that the cyt c molecules could retain its own electrochemical function for a long time.

Publication
IEICE TRANSACTIONS on Electronics Vol.E91-C No.12 pp.1899-1904
Publication Date
2008/12/01
Publicized
Online ISSN
1745-1353
DOI
10.1093/ietele/e91-c.12.1899
Type of Manuscript
Special Section PAPER (Special Section on The Forefront of 21st Century Organic Molecular Electronics)
Category
Bioelectronics

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