Journal ArticleDOI
Catalytic reduction of myoglobin and hemoglobin at chemically modified electrodes containing methylene blue.
Jiannong. Ye,Richard P. Baldwin +1 more
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Chemically modified electrodes exhibiting electrocatalytic response toward myoglobin and hemoglobin were constructed by adsorbing the phenothiazine mediator titrants methylene blue and thionine onto spectroscopic graphite.Abstract:
Chemically modified electrodes (CMEs) exhibiting electrocatalytic response toward myoglobin and hemoglobin were constructed by adsorbing the phenothiazine mediator titrants methylene blue and thionine onto spectroscopic graphite. These CMEs, which were prepared by a rapid (60 s) and reproducible (3.2% relative standard deviation) dip-coating procedure, permitted the hemoprotein electroreduction to take place at the reduction potential of the mediator moleculeread more
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Size Exclusion Chromatography
Howard G. Barth,Barry E. Boyes +1 more
TL;DR: Size exclusion chromatography separates macromolecules according to their hydrodynamic volume and has become the dominant method for the determination of molecular weight or mass distribution (MWD or MMD) of synthetic polymers.
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Hydrogen peroxide sensor based on horseradish peroxidase-labeled Au colloids immobilized on gold electrode surface by cysteamine monolayer
TL;DR: The low K app M values demonstrated that Horseradish peroxidase immobilized on Au colloids exhibited a high affinity to H 2 O 2 with no loss of enzymatic activity.
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Direct electron transfer and characterization of hemoglobin immobilized on a Au colloid-cysteamine-modified gold electrode
TL;DR: In this article, a hemoglobin (Hb) was immobilized successfully on nanometer-sized gold colloid particles associated with a cysteamine monolayer on a gold electrode surface.
References
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Journal ArticleDOI
Novel method for the investigation of the electrochemistry of metalloproteins: cytochrome c
Mark J. Eddowes,H. Allen O. Hill +1 more
TL;DR: In this article, the dc and ac cyclic voltammetries of horse heart ferricytochrome c have been investigated and it is shown that in the presence of 4,4′-bipyridyl, the electrochemistry corresponds to a quasi-reversible one-electron process, from which an E° value of +0·25 V vs normal hydrogen electrode can be derived.
Journal ArticleDOI
Surface modifiers for the promotion of direct electrochemistry of cytochrome c
TL;DR: In this paper, a survey of four bifunctional organic compounds was conducted to assess their ability to promote the direct electrochemistry of horse heart cytochrome c at a modified gold electrode.
Journal ArticleDOI
Electrocatalytic oxidation of reduced nicotinamide coenzymes by graphite electrodes modified with an adsorbed phenoxazinium salt, meldola blue
TL;DR: Meldola Blue (7-dimethylamino-1,2-benzophenoxazine) can be adsorbed on graphite to give chemically modified electrodes as discussed by the authors.
Journal ArticleDOI
Mediator compounds for the electrochemical study of biological redox systems: a compilation
Mary Lou Fultz,Richard A. Durst +1 more
TL;DR: In this article, the characteristics of ideal mediators are discussed and structural information on previously reported mediator compounds is provided, and a current survey of compounds having suitable redox mediation characteristics is provided.
Journal ArticleDOI
Electrochemistry of horse heart cytochrome c
Mark J. Eddowes,H. Allen O. Hill +1 more