Coordinated H-bonding between porphyrins on metal surfaces (Articolo in rivista)

Type
Label
  • Coordinated H-bonding between porphyrins on metal surfaces (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/jp302784r (literal)
Alternative label
  • A. Garcia-Lekue, R. Gonzalez-Moreno, S. Garcia-Gil, D. F. Pickup, L. Floreano, A. Verdini, A. Cossaro, J. A. Marti?n-Gago, A. Arnau, and C. Rogero (2012)
    Coordinated H-bonding between porphyrins on metal surfaces
    in Journal of physical chemistry. C
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • A. Garcia-Lekue, R. Gonzalez-Moreno, S. Garcia-Gil, D. F. Pickup, L. Floreano, A. Verdini, A. Cossaro, J. A. Marti?n-Gago, A. Arnau, and C. Rogero (literal)
Pagina inizio
  • 15378 (literal)
Pagina fine
  • 15384 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 116 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • A. Garcia-Lekue,*,+ R. GonzalA?ez-Moreno,?,+ S. Garcia-Gil,§ D. F. Pickup,? L. Floreano,_ A. Verdini,_ A. Cossaro,_ J. A. Marti?n-Gago,a? A. Arnau,?,#,+ and C. Rogero?,+ +Donostia International Physics Center (DIPC), San Sebastian, Spain ?Materials Physics Center (MPC), Centro de Fi?sica de Materiales (CSIC-UPV/EHU), San Sebastian, Spain §Centred'ElaborationdeMaterA?iauxetd'EtudesStructurales(CEMES),Toulouse,France _Istituto O_cina dei Materiali (CNR-IOM), Laboratorio TASC, Trieste, Italy a?Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Madrid, Spain #Departamento de Fi?sica de Materiales UPV/EHU, Facultad de Qui?mica, San Sebastian, Spain (literal)
Titolo
  • Coordinated H-bonding between porphyrins on metal surfaces (literal)
Abstract
  • Using a combination of X-ray photoelectron spectroscopy (XPS) and core level shift _rst principles calculations, we determine the formation of an unusual intermolecular interaction between porphyrin molecules. We show that protoporphyrin IX molecules (H2PPIX) adsorbed on Cu surfaces at low temperature (LT) form molecular adlayers stabilized by a strong (1.3 eV) tetragonal coordinated H-bond. This unconventional H-bonding involves the four nitrogen atoms in the tetrapyrrole macrocycle of one molecule, four hydrogen atoms, and one of the hydroxyl oxygen atoms from the carboxylic acid groups of an adjacent molecule. The calculations demonstrate that the corresponding _ngerprint of this bond is observed in both the nitrogen XPS data, showing a unique peak, and the almost unchanged 1s core level energy of the hydroxyl oxygen atoms. We explain the formation of this bond by a charge rearrangement mechanism that includes proton sharing and migration. (literal)
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