Mechanical stretching-induced electron transfer reactions and conductance switching in single molecules
A central idea in electron-transfer theories is the coupling of the electronic state of a molecule to its structure. Here we show experimentally that fine changes to molecular structures by mechanically stretching a single metal complex molecule via changing the metal–ligand bond length can shift it...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
American Chemical Society
2017
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| Online Access: | https://openresearch-repository.anu.edu.au/handle/1885/209115 http://hdl.handle.net/20.500.11937/57287 |
| _version_ | 1848760043568103424 |
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| author | Li, Y. Haworth, N. Xiang, L. Ciampi, Simone Coote, M. Tao, N. |
| author_facet | Li, Y. Haworth, N. Xiang, L. Ciampi, Simone Coote, M. Tao, N. |
| author_sort | Li, Y. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A central idea in electron-transfer theories is the coupling of the electronic state of a molecule to its structure. Here we show experimentally that fine changes to molecular structures by mechanically stretching a single metal complex molecule via changing the metal–ligand bond length can shift its electronic energy levels and predictably guide electron-transfer reactions, leading to the changes in redox state. We monitor the redox state of the molecule by tracking its characteristic conductance, determine the shift in the redox potential due to mechanical stretching of the metal–ligand bond, and perform model calculations to provide insights into the observations. The work reveals that a mechanical force can shift the redox potential of a molecule, change its redox state, and thus allow the manipulation of single molecule conductance. |
| first_indexed | 2025-11-14T10:09:30Z |
| format | Journal Article |
| id | curtin-20.500.11937-57287 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:09:30Z |
| publishDate | 2017 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-572872022-09-01T08:30:23Z Mechanical stretching-induced electron transfer reactions and conductance switching in single molecules Li, Y. Haworth, N. Xiang, L. Ciampi, Simone Coote, M. Tao, N. A central idea in electron-transfer theories is the coupling of the electronic state of a molecule to its structure. Here we show experimentally that fine changes to molecular structures by mechanically stretching a single metal complex molecule via changing the metal–ligand bond length can shift its electronic energy levels and predictably guide electron-transfer reactions, leading to the changes in redox state. We monitor the redox state of the molecule by tracking its characteristic conductance, determine the shift in the redox potential due to mechanical stretching of the metal–ligand bond, and perform model calculations to provide insights into the observations. The work reveals that a mechanical force can shift the redox potential of a molecule, change its redox state, and thus allow the manipulation of single molecule conductance. 2017 Journal Article http://hdl.handle.net/20.500.11937/57287 10.1021/jacs.7b08239 https://openresearch-repository.anu.edu.au/handle/1885/209115 http://purl.org/au-research/grants/arc/DE160100732 American Chemical Society unknown |
| spellingShingle | Li, Y. Haworth, N. Xiang, L. Ciampi, Simone Coote, M. Tao, N. Mechanical stretching-induced electron transfer reactions and conductance switching in single molecules |
| title | Mechanical stretching-induced electron transfer reactions and conductance switching in single molecules |
| title_full | Mechanical stretching-induced electron transfer reactions and conductance switching in single molecules |
| title_fullStr | Mechanical stretching-induced electron transfer reactions and conductance switching in single molecules |
| title_full_unstemmed | Mechanical stretching-induced electron transfer reactions and conductance switching in single molecules |
| title_short | Mechanical stretching-induced electron transfer reactions and conductance switching in single molecules |
| title_sort | mechanical stretching-induced electron transfer reactions and conductance switching in single molecules |
| url | https://openresearch-repository.anu.edu.au/handle/1885/209115 https://openresearch-repository.anu.edu.au/handle/1885/209115 http://hdl.handle.net/20.500.11937/57287 |