Radical-Enhanced Charge Transport in Single-Molecule Phenothiazine Electrical Junctions

Liu, Junyang and Zhao, Xiaotao and Al-Galiby, Qusiy and Huang, Xiaoyan and Zheng, Jueting and Li, Ruihao and Huang, Cancan and Yang, Yang and Shi, Jia and Manrique, David Zsolt and Lambert, Colin J. and Bryce, Martin R. and Hong, Wenjing (2017) Radical-Enhanced Charge Transport in Single-Molecule Phenothiazine Electrical Junctions. Angewandte Chemie - International Edition, 56 (42). pp. 13061-13065. ISSN 1433-7851

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We studied the single-molecule conductance through an acid oxidant triggered phenothiazine (PTZ-) based radical junction using the mechanically controllable break junction technique. The electrical conductance of the radical state was enhanced by up to 200 times compared to the neutral state, with high stability lasting for at least two months and high junction formation probability at room-temperature. Theoretical studies revealed that the conductance increase is due to a significant decrease of the HOMO–LUMO gap and also the enhanced transmission close to the HOMO orbital when the radical forms. The large conductance enhancement induced by the formation of the stable PTZ radical molecule will lead to promising applications in single-molecule electronics and spintronics.

Item Type:
Journal Article
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Angewandte Chemie - International Edition
Additional Information:
This is the peer reviewed version of the following article: J. Liu, X. Zhao, Q. Al-Galiby, X. Huang, J. Zheng, R. Li, C. Huang, Y. Yang, J. Shi, D. Z. Manrique, C. J. Lambert, M. R. Bryce, W. Hong, Angew. Chem. Int. Ed. 2017, 56, 13061. which has been published in final form at https://onlinelibrary.wiley.com/doi/full/10.1002/anie.201707710 This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
Uncontrolled Keywords:
?? charge transportelectric conductancemolecular electronicsradical cationssingle-molecule junctionscatalysisgeneral chemistrychemistry(all) ??
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15 Jan 2020 09:25
Last Modified:
16 Jul 2024 11:17