ArticleAnalytical chemistry2011
Equilibrium and kinetic behavior of Fe(CN)6(3-/4-) and cytochrome c in direct electrochemistry using a film electrode thin-layer transmission cell.
Article in Analytical chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Article
- Assessment of the Maximal Activity of Complex IV in the Inner Mitochondrial Membrane by Tandem Electrochemistry and Respirometry.Analytical chemistry · 2021Article
- Fourier Transform Infrared Spectrovoltammetry and Quantitative Modeling of Analytes in Kinetically Constrained Redox Mixtures.Analytical chemistry · 2019Article
- Effects of Film Morphology and Surface Chemistry on the Direct Electrochemistry of CytochromeElectrochimica acta · 2016Article
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Authors and funding
4 authors.
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Abstract
We report on the design and performance of a thin-layer electrochemical cell optimized for use with optically transparent film electrodes in combination with UV/vis and IR transmission spectroscopic measurements. The cell allows for measurements under both aerobic and anaerobic conditions. The direct, unmediated electron transfer, as assessed by the current transient, and the corresponding optical response observed for the Fe(CN)(6)(3-/4-) couple were in good agreement with theoretical predictions for voltammetry and optical absorption by an analyte confined in a thin layer. Chronoamperometric and spectroscopic measurements of Fe(CN)(6)(3-/4-) on gold mesh electrode revealed fast kinetics strongly influenced by the electrolyte concentration. Maximal apparent rates exceeding 2 s(-1) in 1 M KCl were observed optically. The direct kinetic and thermodynamic behavior of cytochrome c was compared with several electrode materials using the cell. The results showed heme ligand-dependent changes in the protein-electrode interactions. Mid-UV/visible spectral changes upon redox transitions in native cytochrome c and its cyanide derivative, as well as dissociation of the ferrous cytochrome c-CN complex, are reported.
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