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Chemisorption, Morphology, and Structure of a n‐Type Perylene Diimide Derivative at the Interface with Gold: Influence on Devices from Thin Films to Single Molecules
Author(s) -
Ciccullo Francesca,
Savu SabineAntonia,
Gerbi Andrea,
Bauer Maximilian,
Ovsyannikov Ruslan,
Cassinese Antonio,
Chassé Thomas,
Casu Maria Benedetta
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201404901
Subject(s) - diimide , perylene , monolayer , materials science , molecule , thin film , substrate (aquarium) , chemisorption , decoupling (probability) , derivative (finance) , nanotechnology , photochemistry , chemistry , adsorption , organic chemistry , oceanography , control engineering , geology , financial economics , engineering , economics
We have investigated thin films of a perylene diimide derivative with a cyano‐functionalized core (PDI‐8CN 2 ) deposited on Au(111) single crystals from the monolayer to the multilayer regime. We found that PDI‐8CN 2 is chemisorbed on gold. The molecules experience a thickness‐dependent reorientation, and a 2D growth mode with molecular stepped terraces is achieved adopting low deposition rates. The obtained results are discussed in terms of their impact on field effect devices, also clarifying why the use of substrate/contact treatments, decoupling PDI‐8CN 2 molecules from the substrate/contacts, is beneficial for such devices. Our results also suggest that perylene diimide derivatives with CN bay‐functionalization are very promising candidates for single‐molecule electronic devices.