title: Adlayers of C60-C60 and C60-C70 fullerene dimers formed on au(111) in benzene solutions studied by STM and LEED.
abstract: Scanning tunneling microscopy (STM) and low-energy electron diffraction were used to reveal the structures of ordered adlayers of [2+2]-type C60-C60 fullerene dimer (C120) and C60-C70 cross-dimer (C130) formed on Au(111) by immersingit in abenzene solution containing C120 or C130 molecules. High-resolution STM images clearly showed the packing arrangements and the electronic structures of C120 and C130 on the Au(111) surface in ultrahigh vacuum. The (2 square root3 x 4square root3)R30 degrees, (2square root3 x 5square root3)R30 degrees, and (7 x 7) structures were found for the C120 adlayer on the Au(111) surface, whereas C130 molecules were closely packed on the surface. Each C60 or C70 monomer cage was discerned in the STM image of a C130 molecule.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Aoba-yama 04, Sendai 980-8579, Japan.
authors.forename: Masashi
authors.initials: M
authors.lastname: Matsumoto
authors.forename: Junji
authors.initials: J
authors.lastname: Inukai
authors.forename: Eishi
authors.initials: E
authors.lastname: Tsutsumi
authors.forename: Soichiro
authors.initials: S
authors.lastname: Yoshimoto
authors.forename: Kingo
authors.initials: K
authors.lastname: Itaya
authors.forename: Osamu
authors.initials: O
authors.lastname: Ito
authors.forename: Koichi
authors.initials: K
authors.lastname: Fujiwara
authors.forename: Michihisa
authors.initials: M
authors.lastname: Murata
authors.forename: Yasujiro
authors.initials: Y
authors.lastname: Murata
authors.forename: Koichi
authors.initials: K
authors.lastname: Komatsu