Radical Enhanced Charge Transport in Single-Molecule Phenothiazine Electrical Junctions

Liu, Junyang; Zhao, Xiaotao; Al-Galiby, Qusiy; Huang, Xiaoyan; Zheng, Jueting; Li, Ruihao; Huang, Cancan; Yang, Yang; Shi, Jia; Manrique, David Zsolt; Lambert, Colin J.; Bryce, Martin R.; Hong, Wenjing

doi:10.1002/anie.201707710

Radical Enhanced Charge Transport in Single-Molecule Phenothiazine Electrical Junctions

Liu, Junyang; Zhao, Xiaotao; Al-Galiby, Qusiy; Huang, Xiaoyan; Zheng, Jueting; Li, Ruihao; Huang, Cancan; Yang, Yang; Shi, Jia; Manrique, David Zsolt; Lambert, Colin J.; Bryce, Martin R.; Hong, Wenjing

Authors

Junyang Liu

Xiaotao Zhao

Qusiy Al-Galiby

Xiaoyan Huang

Jueting Zheng

Ruihao Li

Cancan Huang

Yang Yang

Jia Shi

David Zsolt Manrique

Colin J. Lambert

Professor Martin Bryce m.r.bryce@durham.ac.uk
Professor

Wenjing Hong

Abstract

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.

Citation

Liu, J., Zhao, X., Al-Galiby, Q., Huang, X., Zheng, J., Li, R., …Hong, W. (2017). Radical Enhanced Charge Transport in Single-Molecule Phenothiazine Electrical Junctions. Angewandte Chemie International Edition, 56(42), 13061-13065. https://doi.org/10.1002/anie.201707710

Journal Article Type	Article
Acceptance Date	Aug 3, 2017
Online Publication Date	Sep 12, 2017
Publication Date	Sep 12, 2017
Deposit Date	Oct 18, 2017
Publicly Available Date	Sep 12, 2018
Journal	Angewandte Chemie International Edition
Print ISSN	1433-7851
Electronic ISSN	1521-3773
Publisher	Wiley
Peer Reviewed	Peer Reviewed
Volume	56
Issue	42
Pages	13061-13065
DOI	https://doi.org/10.1002/anie.201707710

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Copyright Statement
This is the accepted version of the following article: Liu, Junyang, Zhao, Xiaotao, Al-Galiby, Qusiy, Huang, Xiaoyan, Zheng, Jueting, Li, Ruihao, Huang, Cancan, Yang, Yang, Shi, Jia, Manrique, David Zsolt, Lambert, Colin J., Bryce, Martin R. & Hong, Wenjing (2017). Radical Enhanced Charge Transport in Single-Molecule Phenothiazine Electrical Junctions. Angewandte Chemie International Edition 56(42): 13061-13065 which has been published in final form at https://doi.org/10.1002/anie.201707710. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.