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Reducing the Molecule-Substrate Coupling in C60-Based Nanostructures by Molecular Interactions

K. J. Franke, G. Schulze, N. Henningsen, I. Fernández-Torrente, J. I. Pascual, S. Zarwell, K. Rück-Braun, M. Cobian, and N. Lorente
Phys. Rev. Lett. 100, 036807 – Published 24 January 2008

Abstract

Codeposition of C60 and the three-dimensional molecular hydrocarbon 1,3,5,7-tetraphenyladamantane (TPA) on Au(111) leads to the spontaneous formation of molecular nanostructures in which each fullerene is locked into a specific orientation by three surrounding TPA. Scanning tunneling spectroscopy shows that the electronic coupling of C60 with the surface is significantly reduced in these nanostructures, enhancing the free-molecule properties. As evidenced by density functional theory simulations, the nanostructures are stabilized by 18 local electrostatic forces between C60 and TPA, resulting in a lifting of the C60 cage from the surface.

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  • Received 3 August 2007

DOI:https://doi.org/10.1103/PhysRevLett.100.036807

©2008 American Physical Society

Authors & Affiliations

K. J. Franke1,*, G. Schulze1, N. Henningsen1, I. Fernández-Torrente1, J. I. Pascual1, S. Zarwell2, K. Rück-Braun2, M. Cobian3, and N. Lorente3,4

  • 1Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
  • 2Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany
  • 3Institut de Ciència de Materials de Barcelona (CSIC), Campus de la UAB, 08193 Bellaterra, Spain
  • 4Centre d’Investigació en Nanociència i Nanotecnologia (CSIC-ICN), Campus de la UAB, 08193 Bellaterra, Spain

  • *Corresponding author. franke@physik.fu-berlin.de

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Vol. 100, Iss. 3 — 25 January 2008

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