Pulling and Stretching a Molecular Wire to Tune its Conductance

Gaël Reecht, Hervé Bulou, Fabrice Scheurer, Virginie Speisser, Fabrice Dominique Mathevet, César González, Yannick J. Dappe, Guillaume Schull

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

A scanning tunnelling microscope is used to pull a polythiophene wire from a Au(111) surface while measuring the current traversing the junction. Abrupt current increases measured during the lifting procedure are associated with the detachment of molecular subunits, in apparent contradiction with the expected exponential decrease of the conductance with wire length. Ab initio simulations reproduce the experimental data and demonstrate that this unexpected behavior is due to release of mechanical stress in the wire, paving the way to mechanically gated single-molecule electronic devices.

Original languageEnglish
Pages (from-to)2987-2992
Number of pages6
JournalJournal of Physical Chemistry Letters
Volume6
Issue number15
DOIs
Publication statusPublished - Aug 6 2015

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pulling
Stretching
wire
Wire
detachment
Microscopes
microscopes
Scanning
Molecules
scanning
Polymers
electronics
molecules
simulation

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Reecht, G., Bulou, H., Scheurer, F., Speisser, V., Mathevet, F. D., González, C., ... Schull, G. (2015). Pulling and Stretching a Molecular Wire to Tune its Conductance. Journal of Physical Chemistry Letters, 6(15), 2987-2992. https://doi.org/10.1021/acs.jpclett.5b01283

Pulling and Stretching a Molecular Wire to Tune its Conductance. / Reecht, Gaël; Bulou, Hervé; Scheurer, Fabrice; Speisser, Virginie; Mathevet, Fabrice Dominique; González, César; Dappe, Yannick J.; Schull, Guillaume.

In: Journal of Physical Chemistry Letters, Vol. 6, No. 15, 06.08.2015, p. 2987-2992.

Research output: Contribution to journalArticle

Reecht, G, Bulou, H, Scheurer, F, Speisser, V, Mathevet, FD, González, C, Dappe, YJ & Schull, G 2015, 'Pulling and Stretching a Molecular Wire to Tune its Conductance', Journal of Physical Chemistry Letters, vol. 6, no. 15, pp. 2987-2992. https://doi.org/10.1021/acs.jpclett.5b01283
Reecht G, Bulou H, Scheurer F, Speisser V, Mathevet FD, González C et al. Pulling and Stretching a Molecular Wire to Tune its Conductance. Journal of Physical Chemistry Letters. 2015 Aug 6;6(15):2987-2992. https://doi.org/10.1021/acs.jpclett.5b01283
Reecht, Gaël ; Bulou, Hervé ; Scheurer, Fabrice ; Speisser, Virginie ; Mathevet, Fabrice Dominique ; González, César ; Dappe, Yannick J. ; Schull, Guillaume. / Pulling and Stretching a Molecular Wire to Tune its Conductance. In: Journal of Physical Chemistry Letters. 2015 ; Vol. 6, No. 15. pp. 2987-2992.
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