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Title: Charge-induced distortion and stabilization of surface transfer doped porphyrin films

The interaction between zinc-tetraphenylporphyrin (ZnTPP) and fullerenes (C{sub 60} and C{sub 60}F{sub 48}) are studied using ultraviolet photoelectron spectroscopy (UPS) and scanning tunneling microscopy (STM). Low temperature STM reveals highly ordered ZnTPP monolayers on Au(111). In contrast to C{sub 60}, a submonolayer coverage of C{sub 60}F{sub 48} results in long-range disorder of the underlying single ZnTPP layer and distortion of individual ZnTPP molecules. This is induced by substantial charge transfer at the organic-organic interface, revealed by the interface energetics from UPS. However, a second layer of ZnTPP prevents C{sub 60}F{sub 48} guests from breaking the self-assembled porphyrin template. This finding is important for understanding the growth behaviour of “bottom-up” functional nanostructures involving strong donor-acceptor heterojunctions in molecular electronics.
Authors:
; ; ;  [1] ; ; ;  [2] ;  [3] ;  [1] ;  [4]
  1. Department of Physics, La Trobe University, Bundoora, Victoria 3086 (Australia)
  2. Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern (Germany)
  3. Institut für Physik, Technische Universität Chemnitz, 09126 Chemnitz (Germany)
  4. (Germany)
Publication Date:
OSTI Identifier:
22220496
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 139; Journal Issue: 4; Other Information: (c) 2013 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; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; DOPED MATERIALS; FULLERENES; INTERACTIONS; LAYERS; NANOSTRUCTURES; ORGANIC SEMICONDUCTORS; PHOTOELECTRON SPECTROSCOPY; PORPHYRINS; SCANNING TUNNELING MICROSCOPY; SURFACES; THIN FILMS; ZINC COMPOUNDS