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@ARTICLE{Paens:202604,
author = {Paßens, Michael and Waser, Rainer and Karthäuser, Silvia},
title = {{E}nhanced fullerene–{A}u(111) coupling in (2√3 ×
2√3){R}30° superstructures with intermolecular
interactions},
journal = {Beilstein journal of nanotechnology},
volume = {6},
issn = {2190-4286},
address = {Frankfurt, M.},
publisher = {Beilstein-Institut zur Förderung der Chemischen
Wissenschaften},
reportid = {FZJ-2015-04803},
pages = {1421 - 1431},
year = {2015},
abstract = {Disordered and uniform (2√3 × 2√3)R30°
superstructures of fullerenes on the Au(111) surface have
been studied using scanning tunneling microscopy and
spectroscopy. It is shown that the deposition and growth
process of a fullerene monolayer on the Au(111) surface
determine the resulting superstructure. The supply of
thermal energy is of importance for the activation of a Au
vacancy forming process and thus, one criterion for the
selection of the respective superstructure. However, here it
is depicted that a vacancy–adatom pair can be formed even
at room temperature. This latter process results in C60
molecules that appear slightly more bright in scanning
tunnelling microscopy images and are identified in
disordered (2√3 x 2√3)R30° superstructures based on a
detailed structure analysis. In addition, these slightly
more bright C60 molecules form uniform (2√3 x 2√3)R30°
superstructures, which exhibit intermolecular interactions,
likely mediated by Au adatoms. Thus, vacancy–adatom pairs
forming at room temperature directly affect the resulting
C60 superstructure. Differential conductivity spectra reveal
a lifting of the degeneracy of the LUMO and LUMO+1 orbitals
in the uniform (2√3 x 2√3)R30° superstructure and in
addition, hybrid fullerene–Au(111) surface states suggest
partly covalent interactions.},
cin = {PGI-7 / JARA-FIT},
ddc = {620},
cid = {I:(DE-Juel1)PGI-7-20110106 / $I:(DE-82)080009_20140620$},
pnm = {524 - Controlling Collective States (POF3-524)},
pid = {G:(DE-HGF)POF3-524},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000357017200001},
doi = {10.3762/bjnano.6.147},
url = {https://juser.fz-juelich.de/record/202604},
}