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

Danilov, Andrey and Kubatkin, Sergey and Kafanov, Sergey and Hedegård, Per and Stuhr-Hansen, Nicolai and Moth-Poulsen, Kasper and Bjørnholm, Thomas (2008) Electronic transport in single molecule junctions:control of the molecule-electrode coupling through intramolecular tunneling barriers. Nano Letters, 8 (1). pp. 1-5. ISSN 1530-6984

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Abstract

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 π;-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.

Item Type: Journal Article
Journal or Publication Title: Nano Letters
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100/3104
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 84900
Deposited By: ep_importer_pure
Deposited On: 27 Feb 2017 15:04
Refereed?: Yes
Published?: Published
Last Modified: 29 Jan 2020 03:48
URI: https://eprints.lancs.ac.uk/id/eprint/84900

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