Single-molecule charge transfer and bonding at an organic/inorganic interface: tetracyanoethylene on noble metals.
We have studied the structural and electronic properties of tetracyanoethylene (TCNE) molecules on different noble-metal surfaces using scanning tunneling spectroscopy and density functional theory. Striking differences are observed in the TCNE behavior on Au, Ag, and Cu substrates in the submonolayer limit. We explain our findings by a combination of charge-transfer and lattice-matching properties for TCNE across substrates that results in a strong variation of molecule-molecule and molecule-substrate interactions. These results have significant implications for future organic/inorganic nanoscopic devices incorporating molecule-based magnetism.
Wegner
Daniel
D
Department of Physics, University of California, Lawrence Berkeley National Laboratory, Berkeley, California 94720-7300, USA. wegner@berkeley.edu
Yamachika
Ryan
R
Wang
Yayu
Y
Brar
Victor W
VW
Bartlett
Bart M
BM
Long
Jeffrey R
JR
Crommie
Michael F
MF