Canadian Journal of Chemistry · 1978 · 31 citations · 0 references
Potential ElectrolysisEngineeringBiochemistryMetalloporphyrin π-Cation RadicalsNatural SciencesExcitation Energy TransferHeme TransportElectron TransportRedox ChemistryChemistryCharge TransportChemical KineticsElectrochemistry
The controlled potential electrolysis of Ni(II) meso-tetraphenylporphyrin (Ni(II)TPP) gives at room temperature the corresponding metalloporphyrin π-cation radical [Ni(II)TPP] + • . Upon freezing a solution of the π-cation radical to 77 K an internal electron transfer occurs to give [Ni(III)TPP] + . A discussion of the routes of electron transport in heme proteins is given, and the roles of metalloporphyrin π-cation radicals in electron transport is evaluated.