title: Synthesis of stable Cu(n)Au(25-n) nanoclusters (n = 1-9) using selenolate ligands.
abstract: A series of highly stable Cu-doped gold clusters with up to 9 Cu atoms per cluster, Cu(n)Au(25-n)(SeC8H17)18, were synthesized using selenolate ligands. Spectroscopic analyses demonstrated that increasing levels of Cu doping in a cluster gradually decreased its HOMO-LUMO gap and consequently shifted its photoluminescence emission to longer wavelengths. These clusters were capable of exhibiting higher levels of Cu doping as compared to analogous clusters containing thiolate ligands.
authors.affiliation: Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
authors.forename: Wataru
authors.initials: W
authors.lastname: Kurashige
authors.forename: Kenta
authors.initials: K
authors.lastname: Munakata
authors.forename: Katsuyuki
authors.initials: K
authors.lastname: Nobusada
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Negishi