Size-selected monodisperse nanoclusters on supported graphene: bonding, isomerism, and mobility.
Soft-landing of size-selected Pd(n) (n ≤ 20) nanoclusters on a Moiré-patterned surface of graphene adsorbed on Ru(0001) leads to controlled formation of a truly monodisperse cluster-assembled material. Combined scanning tunneling microscopy and first-principles calculations allow identification of selective adsorption sites, characterization of size-dependent cluster isomers, and exploration of interconversion processes between isomeric forms that manifestly influence cluster surface mobility. Surface-assembled cluster superstructures may be employed in nanocatalytic applications, as well as in fundamental investigations of physical factors controlling bonding, structure, isomerism, and surface mobilities of surface-supported clusters.
Chemistry Department, Technische Universität München, 85748 Garching, Germany.
Bo
B
Wang
Bokwon
B
Yoon
Michael
M
König
Yves
Y
Fukamori
Friedrich
F
Esch
Ueli
U
Heiz
Uzi
U
Landman