Adsorbates in a box: titration of substrate electronic states.
Nanoscale confinement of adsorbed CO molecules in an anthraquinone network on Cu(111) with a pore size of ≈4  nm arranges the CO molecules in a shell structure that coincides with the distribution of substrate confined electronic states. Molecules occupy the states approximately in the sequence of rising electron energy. Despite the sixfold symmetry of the pore boundary itself, the adsorbate distribution adopts the threefold symmetry of the network-substrate system, highlighting the importance of the substrate even for such quasi-free-electron systems.
Cheng
Zhihai
Z
Department of Chemistry, University of California-Riverside, Riverside, California 92521, USA.
Wyrick
Jonathan
J
Luo
Miaomiao
M
Sun
Dezheng
D
Kim
Daeho
D
Zhu
Yeming
Y
Lu
Wenhao
W
Kim
Kwangmoo
K
Einstein
T L
TL
Bartels
Ludwig
L