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Stretch Evolution of Electronic Coupling of the Thiophenyl Anchoring Group with Gold in Mechanically Controllable Break Junctions
[Image: see text] The current–voltage characteristics of a single-molecule junction are determined by the electronic coupling Γ between the electronic states of the electrodes and the dominant transport channel(s) of the molecule. Γ is profoundly affected by the choice of the anchoring groups and th...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10291638/ https://www.ncbi.nlm.nih.gov/pubmed/37318265 http://dx.doi.org/10.1021/acs.jpclett.3c00370 |
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author | Lokamani, Mani Kilibarda, Filip Günther, Florian Kelling, Jeffrey Strobel, Alexander Zahn, Peter Juckeland, Guido Gothelf, Kurt V. Scheer, Elke Gemming, Sibylle Erbe, Artur |
author_facet | Lokamani, Mani Kilibarda, Filip Günther, Florian Kelling, Jeffrey Strobel, Alexander Zahn, Peter Juckeland, Guido Gothelf, Kurt V. Scheer, Elke Gemming, Sibylle Erbe, Artur |
author_sort | Lokamani, Mani |
collection | PubMed |
description | [Image: see text] The current–voltage characteristics of a single-molecule junction are determined by the electronic coupling Γ between the electronic states of the electrodes and the dominant transport channel(s) of the molecule. Γ is profoundly affected by the choice of the anchoring groups and their binding positions on the tip facets and the tip–tip separation. In this work, mechanically controllable break junction experiments on the N,N′-bis(5-ethynylbenzenethiol-salicylidene)ethylenediamine are presented, in particular, the stretch evolution of Γ with increasing tip–tip separation. The stretch evolution of Γ is characterized by recurring local maxima and can be related to the deformation of the molecule and sliding of the anchoring groups above the tip facets and along the tip edges. A dynamic simulation approach is implemented to model the stretch evolution of Γ, which captures the experimentally observed features remarkably well and establishes a link to the microscopic structure of the single-molecule junction. |
format | Online Article Text |
id | pubmed-10291638 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-102916382023-06-27 Stretch Evolution of Electronic Coupling of the Thiophenyl Anchoring Group with Gold in Mechanically Controllable Break Junctions Lokamani, Mani Kilibarda, Filip Günther, Florian Kelling, Jeffrey Strobel, Alexander Zahn, Peter Juckeland, Guido Gothelf, Kurt V. Scheer, Elke Gemming, Sibylle Erbe, Artur J Phys Chem Lett [Image: see text] The current–voltage characteristics of a single-molecule junction are determined by the electronic coupling Γ between the electronic states of the electrodes and the dominant transport channel(s) of the molecule. Γ is profoundly affected by the choice of the anchoring groups and their binding positions on the tip facets and the tip–tip separation. In this work, mechanically controllable break junction experiments on the N,N′-bis(5-ethynylbenzenethiol-salicylidene)ethylenediamine are presented, in particular, the stretch evolution of Γ with increasing tip–tip separation. The stretch evolution of Γ is characterized by recurring local maxima and can be related to the deformation of the molecule and sliding of the anchoring groups above the tip facets and along the tip edges. A dynamic simulation approach is implemented to model the stretch evolution of Γ, which captures the experimentally observed features remarkably well and establishes a link to the microscopic structure of the single-molecule junction. American Chemical Society 2023-06-15 /pmc/articles/PMC10291638/ /pubmed/37318265 http://dx.doi.org/10.1021/acs.jpclett.3c00370 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Lokamani, Mani Kilibarda, Filip Günther, Florian Kelling, Jeffrey Strobel, Alexander Zahn, Peter Juckeland, Guido Gothelf, Kurt V. Scheer, Elke Gemming, Sibylle Erbe, Artur Stretch Evolution of Electronic Coupling of the Thiophenyl Anchoring Group with Gold in Mechanically Controllable Break Junctions |
title | Stretch Evolution
of Electronic Coupling of the Thiophenyl
Anchoring Group with Gold in Mechanically Controllable Break Junctions |
title_full | Stretch Evolution
of Electronic Coupling of the Thiophenyl
Anchoring Group with Gold in Mechanically Controllable Break Junctions |
title_fullStr | Stretch Evolution
of Electronic Coupling of the Thiophenyl
Anchoring Group with Gold in Mechanically Controllable Break Junctions |
title_full_unstemmed | Stretch Evolution
of Electronic Coupling of the Thiophenyl
Anchoring Group with Gold in Mechanically Controllable Break Junctions |
title_short | Stretch Evolution
of Electronic Coupling of the Thiophenyl
Anchoring Group with Gold in Mechanically Controllable Break Junctions |
title_sort | stretch evolution
of electronic coupling of the thiophenyl
anchoring group with gold in mechanically controllable break junctions |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10291638/ https://www.ncbi.nlm.nih.gov/pubmed/37318265 http://dx.doi.org/10.1021/acs.jpclett.3c00370 |
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