Charge-transfer-induced structural rearrangements at both sides of organic/metal interfaces.
Organic/metal interfaces control the performance of many optoelectronic organic devices, including organic light-emitting diodes or field-effect transistors. Using scanning tunnelling microscopy, low-energy electron diffraction, X-ray photoemission spectroscopy, near-edge X-ray absorption fine structure spectroscopy and density functional theory calculations, we show that electron transfer at the interface between a metal surface and the organic electron acceptor tetracyano-p-quinodimethane leads to substantial structural rearrangements on both the organic and metallic sides of the interface. These structural modifications mediate new intermolecular interactions through the creation of stress fields that could not have been predicted on the basis of gas-phase neutral tetracyano-p-quinodimethane conformation.
Tseng
Tzu-Chun
TC
Max Planck Institute for Solid State Research, D-70569 Stuttgart, Germany.
Urban
Christian
C
Wang
Yang
Y
Otero
Roberto
R
Tait
Steven L
SL
Alcamí
Manuel
M
Ecija
David
D
Trelka
Marta
M
Gallego
José María
JM
Lin
Nian
N
Konuma
Mitsuharu
M
Starke
Ulrich
U
Nefedov
Alexei
A
Langner
Alexander
A
Wöll
Christof
C
Herranz
María Angeles
MA
Martín
Fernando
F
Martín
Nazario
N
Kern
Klaus
K
Miranda
Rodolfo
R