title: Distant protonated pyridine groups in water-soluble iron porphyrin electrocatalysts promote selective oxygen reduction to water.
abstract: Fe(III)-meso-tetra(pyridyl)porphyrins are electrocatalysts for the reduction of dioxygen in aqueous acidic solution. The 2-pyridyl derivatives, both the triflate and chloride salts, are more selective for the desired 4e(-) reduction than the isomeric 4-pyridyl complexes. The inward-pointing pyridinium groups influence proton delivery despite their distance from the iron centre.
authors.affiliation: Department of Chemistry, University of Washington, Seattle, WA 98195-1700, USA.
authors.forename: Benjamin D
authors.initials: BD
authors.lastname: Matson
authors.forename: Colin T
authors.initials: CT
authors.lastname: Carver
authors.forename: Amber
authors.initials: A
authors.lastname: Von Ruden
authors.forename: Jenny Y
authors.initials: JY
authors.lastname: Yang
authors.forename: Simone
authors.initials: S
authors.lastname: Raugei
authors.forename: James M
authors.initials: JM
authors.lastname: Mayer