| Literature DB >> 33245197 |
Larissa Egger1, Michael Hollerer1, Christian S Kern1, Hannes Herrmann1, Philipp Hurdax1, Anja Haags2,3,4, Xiaosheng Yang2,3,4, Alexander Gottwald5, Mathias Richter5, Serguei Soubatch2,3, F Stefan Tautz2,3,4, Georg Koller1, Peter Puschnig1, Michael G Ramsey1, Martin Sterrer1.
Abstract
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.Entities:
Keywords: charge transfer; interfaces; metalation; porphyrins; thin films
Year: 2021 PMID: 33245197 PMCID: PMC7986846 DOI: 10.1002/anie.202015187
Source DB: PubMed Journal: Angew Chem Int Ed Engl ISSN: 1433-7851 Impact factor: 16.823