Send to:

Choose Destination
See comment in PubMed Commons below
Nano Lett. 2008 Jan;8(1):1-5. Epub 2007 Dec 18.

Electronic transport in single molecule junctions: control of the molecule-electrode coupling through intramolecular tunneling barriers.

Author information

  • 1Nano-Science Center (Niels Bohr Institute and Department of Chemistry), University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark.


We report on single molecule electron transport measurements of two oligophenylenevinylene (OPV3) derivatives placed in a nanogap between gold (Au) or lead (Pb) electrodes in a field effect transistor device. Both derivatives contain thiol end groups that allow chemical binding to the electrodes. One derivative has additional methylene groups separating the thiols from the delocalized pi-electron system. The insertion of methylene groups changes the open state conductance by 3-4 orders of magnitude and changes the transport mechanism from a coherent regime with finite zero-bias conductance to sequential tunneling and Coulomb blockade behavior.

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for American Chemical Society
    Loading ...
    Write to the Help Desk