Diodelike Current–Voltage Curves for a Single Molecule–Tunneling Spectroscopy with Submolecular Resolution of an Alkylated, peri-Condensed Hexabenzocoronene

Authors

  • Dr. Andreas Stabel,

    1. Max-Planck-Institut für Polymerforschung, Postfach 3148, D-55021 Mainz (Germany) Telefax: Int. code + (6131)379-100
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  • Dipl.-Chem. Peter Herwig,

    1. Max-Planck-Institut für Polymerforschung, Postfach 3148, D-55021 Mainz (Germany) Telefax: Int. code + (6131)379-100
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  • Prof. Dr. Klaus Müllen,

    Corresponding author
    1. Max-Planck-Institut für Polymerforschung, Postfach 3148, D-55021 Mainz (Germany) Telefax: Int. code + (6131)379-100
    • Max-Planck-Institut für Polymerforschung, Postfach 3148, D-55021 Mainz (Germany) Telefax: Int. code + (6131)379-100
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  • Prof. Dr. Jürgen P. Rabe

    Corresponding author
    1. Institut für Physik der Humboldt-Universität zu Berlin, Invalidenstrasse 110, D-10115 Berlin (Germany) Telefax: Int. code + (030)2803-232
    • Institut für Physik der Humboldt-Universität zu Berlin Invalidenstrasse 110, D-10115 Berlin (Germany) Telefax: Int. code + (030)2803-232
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  • This work was supported by the BMBF (project “Muster selbstorganisierender Moleküle”) as well as by the European Strategic Program for Research and Development in Information Technologies (Long Term Research Projects TOPFIT and PRONANO). A. S. wishes to thank the Fonds der Chemischen Industrie for a Kekulé fellowship.

Abstract

original image

The electronic properties of molecules can in some cases be elucidated by scanning tunneling microscopy and spectroscopy. The current–voltage characteristics through the aromatic core of a benzocoronene molecule (1), localized with submolecular resolution, are the same those of a diode, and are caused by the properties of a single molecule in contact with two electrodes. R = n-C12H25.

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