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Redox‐addressable single‐molecule junctions incorporating a persistent organic radical
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Naghibi, Saman, Sangtarash, Sara, Kumar, Varshini J., Wu, Jian‐Zhong, Judd, Martyna M., Qiao, Xiaohang, Gorenskaia, Elena, Higgins, Simon J., Cox, Nicholas, Nichols, Richard J., Sadeghi, Hatef, Low, Paul J. and Vezzoli, Andrea (2022) Redox‐addressable single‐molecule junctions incorporating a persistent organic radical. Angewandte Chemie (International Edition), 134 (23). e202116985. doi:10.1002/ange.202116985 ISSN 1433-7851.
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Official URL: https://doi.org/10.1002/ange.202116985
Abstract
Integrating radical (open‐shell) species into non‐cryogenic nanodevices is key to unlocking the potential of molecular electronics. While many efforts have been devoted to this issue, in the absence of a chemical/electrochemical potential the open‐shell character is generally lost in contact with the metallic electrodes. Herein, single‐molecule devices incorporating a 6‐oxo‐verdazyl persistent radical have been fabricated using break‐junction techniques. The open‐shell character is retained at room temperature, and electrochemical gating permits in situ reduction to a closed‐shell anionic state in a single‐molecule transistor configuration. Furthermore, electronically driven rectification arises from bias‐dependent alignment of the open‐shell resonances. The integration of radical character, transistor‐like switching, and rectification in a single molecular component paves the way to further studies of the electronic, magnetic, and thermoelectric properties of open‐shell species.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
SWORD Depositor: | Library Publications Router | ||||||||
Journal or Publication Title: | Angewandte Chemie (International Edition) | ||||||||
Publisher: | Wiley - V C H Verlag GmbH & Co. KGaA | ||||||||
ISSN: | 1433-7851 | ||||||||
Official Date: | 7 June 2022 | ||||||||
Dates: |
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Volume: | 134 | ||||||||
Number: | 23 | ||||||||
Article Number: | e202116985 | ||||||||
DOI: | 10.1002/ange.202116985 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 6 May 2022 | ||||||||
Date of first compliant Open Access: | 6 May 2022 | ||||||||
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