Nanoscale assembly of paramagnetic organic radicals on Au(111) single crystals.
The successful thin-film deposition of a pyrene-substituted nitronyl nitroxide radical under controlled conditions has been demonstrated. The electronic properties, chemical environment at the interface, and morphology of the thin films have been investigated by a multitechnique approach. Spectroscopic and morphological analyses indicate a Stranski-Krastanov growth mode and weak physisorption of molecules onto the metallic surface. Electron spin resonance (ESR) spectroscopy shows that evaporation processes and deposition do not affect the paramagnetic character of the molecules. Useful concepts for the engineering of new, purely organic-based magnets, which may open the way to fruitful exploitation of organic molecular-beam deposition for assembly on solid surfaces in view of future technological applications, are presented.
Institute of Physical and Theoretical Chemistry, University of Tuebingen, Auf der Morgenstelle 18, 72076 Tuebingen, Germany.
Sabine-Antonia
SA
Savu
Indro
I
Biswas
Lorenzo
L
Sorace
Matteo
M
Mannini
Donella
D
Rovai
Andrea
A
Caneschi
Thomas
T
Chassé
Maria Benedetta
MB
Casu
D004578:Electron Spin Resonance Spectroscopy / Q000379:methods; D006046:Gold / Q000737:chemistry*; D060526:Magnetic Fields; D015394:Molecular Structure; D036103:Nanotechnology / Q000379:methods*; D056951:Photoelectron Spectroscopy / Q000379:methods; D013499:Surface Properties
D006046:Gold