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- W2914222164 abstract "The direct electrochemical reduction of hemin, protoporphyrin(IX) iron(III) chloride, ligated with strong or weak heterocyclic bases, was investigated in the ionic liquids (IL), 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF6]) and 1-octyl-3-methylimidazolium hexafluorophosphate ([omim][PF6]), using cyclic voltammetry and chronocoulometry. E1/2 values of hemin complexed with N-methylimidazole (NMI) or pyridine (without electrolyte) were determined in the IL (without electrolyte) and in methanol (1.0 M electrolyte). The diffusion coefficients and heterogeneous electron-transfer rate constants of hemin in the IL were also determined. Cyclic voltammetry of hemin adsorbed to a gold surface through 4,4'-dipyridyl disulfide linkages showed a large positive shift in the oxidation wave. The surface concentration of the adsorbed hemin was resolved. Our findings suggest that while hemin is electrochemically active in IL, its behavior is modified by ligand field strength and surface adsorption phenomena." @default.
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- W2914222164 date "2002-01-01" @default.
- W2914222164 modified "2023-09-25" @default.
- W2914222164 title "Bioelectrocatalytic Reactions in Room-Temperature Ionic Liquids" @default.
- W2914222164 doi "https://doi.org/10.1149/200219.0234pv" @default.
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