Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 19, Issue 10, Pages 3445-3450Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201203247
Keywords
electron spin resonance; EPR spectroscopy; magnetism; nitronyl nitroxides; organic radicals; thin films; X-ray absorption spectroscopy
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Funding
- Deutsche Forschungsgemeinschaft (DFG) [CA852/5-1]
- Wilhelm-Schuler-Stiftung
- Ente Cassa Risparmio di Firenze
- EU through the AdG ERC MolNanoM@s project [267746]
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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 StranskiKrastanov 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.
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