On-Surface Synthesis and Characterization of an Iron Corrole
| Autor: | Philipp Müller, Lukas Ruppenthal, Michael Kothe, Martin Schmid, Jan Herritsch, J. Michael Gottfried, Benedikt P. Klein, Peter Schweyen, Martin Bröring, Malte Zugermeier, Claudio K. Krug |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
010405 organic chemistry Metalation Electronic structure 010402 general chemistry 01 natural sciences XANES 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Metal Crystallography General Energy X-ray photoelectron spectroscopy Oxidation state visual_art Monolayer visual_art.visual_art_medium Physical and Theoretical Chemistry Spectroscopy |
| Zdroj: | The Journal of Physical Chemistry C. 122:10392-10399 |
| ISSN: | 1932-7455 1932-7447 |
| Popis: | To explore the possibility of tuning the oxidation state of a coordinated metal ion in an adsorbed tetrapyrrole complex by a minor modification of the ligand structure, multilayers and monolayers of 3H-hexaethyl-dimethyl-corrole (3H-HEDMC) on Ag(111) were in situ metalated under ultrahigh vacuum (UHV) conditions and subsequently analyzed with spectroscopic and microscopic methods. The metalation reaction leads to the formation of Fe(III)-hexaethyl-dimethyl-corrole (Fe-HEDMC). The results were compared with those for Fe-octaethyl-porphyrin (Fe-OEP), in which the Fe metal center has a formal Fe(+II) character. The analysis of the nearly unperturbed iron-corrole in the multilayer regime with X-ray photoelectron spectroscopy (XPS) and near edge X-ray absorption fine structure (NEXAFS) spectroscopy shows that the electronic structure of the corrole-coordinated iron is consistent with an Fe(+III) state in Fe-HEDMC. In the monolayers, the Fe centers in Fe-HEDMC and Fe-OEP interact similarly with the Ag(111) surf... |
| Databáze: | OpenAIRE |
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