Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 6, Issue 15, Pages 2987-2992Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.5b01283
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Funding
- Agence National de la Recherche [ANR-14-CE26-0016-01]
- Labex NIE [ANR-11-LABX-0058_NIE]
- Region Alsace
- International Center for Frontier Research in Chemistry (FRC)
- GENCI-TGCC [2014096813]
- GENCI-IDRIS [2014092291]
- Agence Nationale de la Recherche (ANR) [ANR-14-CE26-0016] Funding Source: Agence Nationale de la Recherche (ANR)
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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.
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