Polymers for Advanced Technologies · 2001 · 29 citations · 17 references
Natural SciencesChemistryMaterials ScienceCatalysisElectrochemistrySurface ChemistryCharge Transfer ReactionsElectrochemical Energy ConversionElectrode KineticsElectrode MaterialsOxidation-reduction ReactionsRedox-active MaterialsAggregationCarbon ElectrodesCatalytic ActivityElectrocatalytic Oxygen EvolutionOxygen Evolution CatalystsOxygen Reduction CatalystsPorphyrin ComplexesPorphyrin Redox Chemistry
Abstract A set of cobalt porphyrins containing alkyl substituents in their meso sites were synthesized and compared as catalysts for the electroreduction of O 2 when adsorbed on the surface of graphite electrodes. The meso substituents examined included ethyl, propyl, n‐butyl and n‐pentyl. All but the last exhibited high catalytic activity for the electroreduction of O 2 by four electrons. The catalytic activity was attributed to spontaneous aggregation of the porphyrins to produce structures in which pairs of cobalt centers could be bridged by O 2 molecules as previously observed for the unsubstituted and tetramethyl analogs. Copyright © 2001 John Wiley & Sons, Ltd.
17
On the preparation of metalloporphyrins
Alan D. Adler, Frederick R. Longo, F. J. Kampas et al. · Journal of Inorganic and Nuclear Chemistry · 1970 · 1.8K citations
D. B. Spalding · International Journal of Heat and Mass Transfer · 1963 · 1.1K citations