title: Hybrid bilayer membrane: a platform to study the role of proton flux on the efficiency of oxygen reduction by a molecular electrocatalyst.
abstract: In this report, we present a novel platform to study proton-coupled electron transfer (PCET) by controlling the proton flux using an electrode-supported hybrid bilayer membrane (HBM). Oxygen reduction by an iron porphyrin was used as a model PCET reaction. The proton flux was controlled by incorporating an aliphatic proton carrier, decanoic acid, into the lipid layer of the HBM. Using this system, we observed a different catalytic behavior than obtained by simply changing the pH of the solution in the absence of an HBM.
authors.affiliation: Department of Chemistry, Stanford University, Stanford, California 94305, USA. alih2@stanford.edu
authors.forename: Ali
authors.initials: A
authors.lastname: Hosseini
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Barile
authors.forename: Anando
authors.initials: A
authors.lastname: Devadoss
authors.forename: Todd A
authors.initials: TA
authors.lastname: Eberspacher
authors.forename: Richard A
authors.initials: RA
authors.lastname: Decreau
authors.forename: James P
authors.initials: JP
authors.lastname: Collman
mesh_terms: D002384:Catalysis; D055664:Electrochemical Techniques / Q000295:instrumentation*; D004566:Electrodes; D004579:Electron Transport; D004583:Electrons; D004867:Equipment Design; D008567:Membranes, Artificial; D008958:Models, Molecular; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*; D011166:Porphyrins / Q000737:chemistry*; D011522:Protons
chemical_list: D008567:Membranes, Artificial; D011166:Porphyrins; D011522:Protons; D010100:Oxygen