Charge‐Promoted Self‐Metalation of Porphyrins on an Oxide Surface

Metalation and self‐metalation reactions of porphyrins on oxide surfaces have recently gained interest. The mechanism of porphyrin self‐metalation on oxides is, however, far from being understood. Herein, we show by a combination of results obtained with scanning tunneling microscopy, photoemission...

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Detalles Bibliográficos
Autores principales: Egger, Larissa, Hollerer, Michael, Kern, Christian S., Herrmann, Hannes, Hurdax, Philipp, Haags, Anja, Yang, Xiaosheng, Gottwald, Alexander, Richter, Mathias, Soubatch, Serguei, Tautz, F. Stefan, Koller, Georg, Puschnig, Peter, Ramsey, Michael G., Sterrer, Martin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2021
Materias:
Communications
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7986846/
https://www.ncbi.nlm.nih.gov/pubmed/33245197
http://dx.doi.org/10.1002/anie.202015187
Descripción
Sumario:Metalation and self‐metalation reactions of porphyrins on oxide surfaces have recently gained interest. The mechanism of porphyrin self‐metalation on oxides is, however, far from being understood. Herein, we show by a combination of results obtained with scanning tunneling microscopy, photoemission spectroscopy, and DFT computations, that the self‐metalation of 2H‐tetraphenylporphyrin on the surface of ultrathin MgO(001) films is promoted by charge transfer. By tuning the work function of the MgO(001)/Ag(001) substrate, we are able to control the charge and the metalation state of the porphyrin molecules on the surface.

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