title: Interfacial Redox Catalysis on Gold Nanofilms at Soft Interfaces.
abstract: Soft or "liquid-liquid" interfaces were functionalized by roughly half a monolayer of mirror-like nanofilms of gold nanoparticles using a precise interfacial microinjection method. The surface coverage of the nanofilm was characterized by ion transfer voltammetry. These gold nanoparticle films represent an ideal model system for studying both the thermodynamic and kinetic aspects of interfacial redox catalysis. The electric polarization of these soft interfaces is easily controllable, and thus the Fermi level of the electrons in the interfacial gold nanoparticle film can be easily manipulated. Here, we study interfacial redox catalysis between two redox couples located in adjacent immiscible phases and highlight the catalytic properties of a gold nanoparticle film toward heterogeneous electron transfer reactions.
authors.affiliation: †Laboratoire d'Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne, Station 6, CH-1015 Lausanne, Switzerland.
authors.forename: Evgeny
authors.initials: E
authors.lastname: Smirnov
authors.affiliation: †Laboratoire d'Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne, Station 6, CH-1015 Lausanne, Switzerland.
authors.forename: Pekka
authors.initials: P
authors.lastname: Peljo
authors.affiliation: †Laboratoire d'Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne, Station 6, CH-1015 Lausanne, Switzerland.|‡Department of Chemistry and the Tyndall National Institute, University College Cork, Cork, Ireland.
authors.forename: Micheál D
authors.initials: MD
authors.lastname: Scanlon
authors.affiliation: †Laboratoire d'Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne, Station 6, CH-1015 Lausanne, Switzerland.
authors.forename: Hubert H
authors.initials: HH
authors.lastname: Girault
keywords: Fermi level equilibration; electron transfer; gold nanoparticles; liquid−liquid interfaces; nanofilm; redox catalysis