title: Direct observation of key reaction intermediates on gold clusters.
abstract: Using ultraviolet photoelectron spectroscopy, we provide direct experimental evidence that di-oxygen species are stable on anionic gold dimer and tetramer clusters at room temperature. The stabilization of molecular oxygen is crucial for the high activities of the low-temperature reactions on gold catalysts.
authors.affiliation: Department of Physics, University of Konstanz, D-78457 Konstanz, Germany.
authors.forename: Davor
authors.initials: D
authors.lastname: Stolcic
authors.forename: Matthias
authors.initials: M
authors.lastname: Fischer
authors.forename: Gerd
authors.initials: G
authors.lastname: Ganteför
authors.forename: Young Dok
authors.initials: YD
authors.lastname: Kim
authors.forename: Qiang
authors.initials: Q
authors.lastname: Sun
authors.forename: Puru
authors.initials: P
authors.lastname: Jena