title: Charge-transfer-induced structural rearrangements at both sides of organic/metal interfaces.
abstract: 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.
authors.affiliation: Max Planck Institute for Solid State Research, D-70569 Stuttgart, Germany.
authors.forename: Tzu-Chun
authors.initials: TC
authors.lastname: Tseng
authors.forename: Christian
authors.initials: C
authors.lastname: Urban
authors.forename: Yang
authors.initials: Y
authors.lastname: Wang
authors.forename: Roberto
authors.initials: R
authors.lastname: Otero
authors.forename: Steven L
authors.initials: SL
authors.lastname: Tait
authors.forename: Manuel
authors.initials: M
authors.lastname: Alcamí
authors.forename: David
authors.initials: D
authors.lastname: Ecija
authors.forename: Marta
authors.initials: M
authors.lastname: Trelka
authors.forename: José María
authors.initials: JM
authors.lastname: Gallego
authors.forename: Nian
authors.initials: N
authors.lastname: Lin
authors.forename: Mitsuharu
authors.initials: M
authors.lastname: Konuma
authors.forename: Ulrich
authors.initials: U
authors.lastname: Starke
authors.forename: Alexei
authors.initials: A
authors.lastname: Nefedov
authors.forename: Alexander
authors.initials: A
authors.lastname: Langner
authors.forename: Christof
authors.initials: C
authors.lastname: Wöll
authors.forename: María Angeles
authors.initials: MA
authors.lastname: Herranz
authors.forename: Fernando
authors.initials: F
authors.lastname: Martín
authors.forename: Nazario
authors.initials: N
authors.lastname: Martín
authors.forename: Klaus
authors.initials: K
authors.lastname: Kern
authors.forename: Rodolfo
authors.initials: R
authors.lastname: Miranda