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Issue 15, 2018
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Precise tuning of single molecule conductance in an electrochemical environment

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Abstract

Tuning of molecular conductance in a liquid environment is a hot topic in molecular electronics. In this article, we explore a new concept where the Fermi level positions of the metallic ends are varied simply by modifying the electroactive salt concentration in solution. We rely on the electrochemical scanning tunneling microscope break junction method that allows the construction in solution of copper atomic contacts that can be then bridged by single molecules. The experimental conductance evolution is first confronted with an analytical formulation that allows the deduction of the molecule's LUMO position and electronic coupling factors. These parameters are in close agreement with those obtained by independent DFT calculations.

Graphical abstract: Precise tuning of single molecule conductance in an electrochemical environment

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Publication details

The article was received on 23 Jan 2018, accepted on 08 Mar 2018 and first published on 12 Mar 2018


Article type: Paper
DOI: 10.1039/C8NR00625C
Citation: Nanoscale, 2018,10, 7026-7032
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    Precise tuning of single molecule conductance in an electrochemical environment

    L.-L. Peng, F. Chen, Z.-W. Hong, J.-F. Zheng, L. Fillaud, Y. Yuan, M.-L. Huang, Y. Shao, X.-S. Zhou, J.-Z. Chen and E. Maisonhaute, Nanoscale, 2018, 10, 7026
    DOI: 10.1039/C8NR00625C

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