Redox-Addressable Single-Molecule Junctions Incorporating a Persistent Organic Radical

Naghibi, Saman ORCID: 0000-0002-0799-9967, Sangtarash, Sara, Kumar, Varshini J, Wu, Jian-Zhong, Judd, Martyna M, Qiao, Xiaohang, Gorenskaia, Elena, Higgins, Simon J ORCID: 0000-0003-3518-9061, Cox, Nicholas, Nichols, Richard J ORCID: 0000-0002-1446-8275
et al (show 3 more authors) (2022) Redox-Addressable Single-Molecule Junctions Incorporating a Persistent Organic Radical. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 61 (23). e202116985-.

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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: Article
Uncontrolled Keywords: Molecular Devices, Molecular Electronics, Radicals
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 05 Apr 2022 15:05
Last Modified: 18 Jan 2023 21:05
DOI: 10.1002/anie.202116985
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