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Hierarchical interactions and their influence upon the adsorption of organic molecules on a graphene film

Research output: Contribution to Journal/MagazineJournal articlepeer-review

  • Michael Roos
  • Daniela Künzel
  • Benedikt Uhl
  • Hsin Hui Huang
  • Otavio Brandao Alves
  • Harry E. Hoster
  • Axel Gross
  • R. Jürgen Behm
<mark>Journal publication date</mark>22/06/2011
<mark>Journal</mark>Journal of the American Chemical Society
Issue number24
Number of pages4
Pages (from-to)9208-9211
Publication StatusPublished
Early online date23/05/11
<mark>Original language</mark>English


The competition between intermolecular interactions and lateral variations in the molecule-substrate interactions has been studied by scanning tunneling microscopy (STM), comparing the phase formation of (sub)monolayers of the organic molecule 2,4′-BTP on buckled graphene/Ru(0001) and Ag(111) oriented thin films on Ru(0001). On the Ag films, the molecules form a densely packed 2D structure, while on graphene/Ru(0001), only the areas between the maxima are populated. The findings are rationalized by a high corrugation in the adsorption potential for 2,4′-BTP molecules on graphene/Ru(0001). These findings are supported by temperature programmed desorption (TPD) experiments and theoretical results.