title: Universal sulfide-assisted synthesis of M-Ag heterodimers (M = Pd, Au, Pt) as efficient platforms for fabricating metal-semiconductor heteronanostructures.
abstract: We report a universal sulfide-assisted synthesis strategy to prepare dumbbell-like M-Ag heterodimers (M = Pd, Au, Pt). Sulfide ions can give fine control over the reaction kinetics of Ag precursors, resulting in the anisotropic overgrowth of Ag to realize the dumbbell-like heterodimers irrespective of the surface facets or components of the M domain. The M-Ag heterodimers were facilely transformed to M-Ag2S heterodimers via a simple sulfidation reaction. This study provides a versatile approach to realizing not only metal-metal heterodimers but also semiconductor-metal heterodimers and will pave the way for designing heteronanostructures with unprecedented morphologies and functions.
authors.affiliation: Department of Chemistry and KI for the NanoCentury, KAIST , Daejeon 305-701, Korea.
authors.forename: Su-Un
authors.initials: SU
authors.lastname: Lee
authors.forename: Jong Wook
authors.initials: JW
authors.lastname: Hong
authors.forename: Sang-Il
authors.initials: SI
authors.lastname: Choi
authors.forename: Sang Woo
authors.initials: SW
authors.lastname: Han