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  Interpretation of x-ray absorption spectroscopy in the presence of surface hybridization

Diller, K., Maurer, R. J., Müller, M., & Reuter, K. (2017). Interpretation of x-ray absorption spectroscopy in the presence of surface hybridization. The Journal of Chemical Physics, 146(21): 214701. doi:10.1063/1.4984072.

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 Urheber:
Diller, Katharina1, 2, Autor
Maurer, Reinhard J.1, 3, Autor
Müller, Moritz1, 4, Autor
Reuter, Karsten1, Autor           
Affiliations:
1Chair for Theoretical Chemistry, Catalysis Research Center, Technische Universität München, ou_persistent22              
2Institute of Physics, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland., ou_persistent22              
3Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA., ou_persistent22              
4CIC nanoGUNE Consolider, Tolosa Hiribidea 76, E-20018 Donostia - San Sebastián, Spain., ou_persistent22              

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 Zusammenfassung: X-ray absorption spectroscopy (XAS) yields direct access to the electronic and geometric structure of hybrid inorganic-organic interfaces formed upon adsorption of complex molecules at metal surfaces. The unambiguous interpretation of corresponding spectra is challenged by the intrinsic geometric flexibility of the adsorbates and the chemical interactions with the interface. Density-functional theory (DFT) calculations of the extended adsorbate-substrate system are an established tool to guide peak assignment in X-ray photoelectron spectroscopy of complex interfaces. We extend this to the simulation and interpretation of XAS data in the context of functional organic molecules on metal surfaces using dispersion-corrected DFT calculations within the transition potential approach. For the prototypical case of 2H-porphine adsorbed on Ag(111) and Cu(111) substrates, we follow the two main effects of the molecule/surface interaction onto the X-ray absorption signatures: (1) the substrate-induced chemical shift of the 1s core levels that dominates in physisorbed systems and (2) the hybridization-induced broadening and loss of distinct resonances that dominate in more chemisorbed systems.

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Sprache(n): eng - English
 Datum: 2017-02-042017-05-112017-06-012017-06-07
 Publikationsstatus: Erschienen
 Seiten: 6
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1063/1.4984072
 Art des Abschluß: -

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Titel: The Journal of Chemical Physics
  Kurztitel : J. Chem. Phys.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Woodbury, N.Y. : American Institute of Physics
Seiten: 6 Band / Heft: 146 (21) Artikelnummer: 214701 Start- / Endseite: - Identifikator: ISSN: 0021-9606
CoNE: https://pure.mpg.de/cone/journals/resource/954922836226