Influence of Steps on the Tilting and Adsorption Dynamics of Ordered Pentacene Films on Vicinal Ag(111) Surfaces (Articolo in rivista)

Type
Label
  • Influence of Steps on the Tilting and Adsorption Dynamics of Ordered Pentacene Films on Vicinal Ag(111) 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/jp306463w (literal)
Alternative label
  • E. Mete, I. Demirog?lu, E. Albayrak, G. Bracco, S?. Ellialt?og?lu, and M. F. Dan?s?man (2012)
    Influence of Steps on the Tilting and Adsorption Dynamics of Ordered Pentacene Films on Vicinal Ag(111) Surfaces
    in Journal of physical chemistry. C; ACS, American chemical society, Washington, DC (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • E. Mete, I. Demirog?lu, E. Albayrak, G. Bracco, S?. Ellialt?og?lu, and M. F. Dan?s?man (literal)
Pagina inizio
  • 19429 (literal)
Pagina fine
  • 19433 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 116 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • Department of Physics, Bal?kesir University, Bal?kesir 10145, Turkey Department of Chemistry, Middle East Technical University, Ankara 06800, Turkey Department of Physics, Sakarya University, Sakarya 54187, Turkey CNR-IMEM and Department of Physics, University of Genoa, via Dodecaneso 33, 16146 Genoa, Italy Department of Physics, Middle East Technical University, Ankara 06800, Turkey (literal)
Titolo
  • Influence of Steps on the Tilting and Adsorption Dynamics of Ordered Pentacene Films on Vicinal Ag(111) Surfaces (literal)
Abstract
  • Here we present a structural study of pentacene (Pn) thin films on vicinal Ag(111) surfaces by He atom diffraction measurements and density functional theory (DFT) calculations supplemented with van der Waals (vdW) interactions. Our He atom diffraction results suggest initial adsorption at the step edges evidenced by initial slow specular reflection intensity decay rate as a function of Pn deposition time. In parallel with the experimental findings, our DFT +vdW calculations predict the step edges as the most stable adsorption site on the surface. An isolated molecule adsorbs as tilted on the step edge with a binding energy of 1.4 eV. In addition, a complete monolayer (ML) with pentacenes flat on the terraces and tilted only at the step edges is found to be more stable than one with all lying flat or tilted molecules, which in turn influences multilayers. Hence our results suggest that step edges can trap Pn molecules and act as nucleation sites for the growth of ordered thin films with a crystal structure similar to that of bulk Pn. (literal)
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