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Title: Phthalocyanine adsorption to graphene on Ir(111): Evidence for decoupling from vibrational spectroscopy

Phthalocyanine molecules have been adsorbed to Ir(111) and to graphene on Ir(111). From a comparison of scanning tunneling microscopy images of individual molecules adsorbed to the different surfaces alone it is difficult to discern potential differences in the molecular adsorption geometry. In contrast, vibrational spectroscopy using inelastic electron scattering unequivocally hints at strong molecule deformations on Ir(111) and at a planar adsorption geometry on graphene. The spectroscopic evidence for the different adsorption configurations is supported by density functional calculations.
Authors:
; ; ;  [1] ;  [2] ;  [3] ;  [2] ;  [2] ;  [4]
  1. Institut für Physik, Technische Universität Ilmenau, D-98693 Ilmenau (Germany)
  2. Bremen Center for Computational Materials Science, University Bremen, D-28359 Bremen (Germany)
  3. (Brazil)
  4. (Germany)
Publication Date:
OSTI Identifier:
22415354
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 141; Journal Issue: 18; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ADSORPTION; DECOUPLING; DEFORMATION; DENSITY FUNCTIONAL METHOD; GRAPHENE; MOLECULES; PHTHALOCYANINES; SCANNING TUNNELING MICROSCOPY; SCATTERING; SPECTROSCOPY; SURFACES