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Donor-acceptor electron transport mediated by solitons

Brizhik, L.; Piette, B.M.A.G.; Zakrzewski, W.J.

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Authors

L. Brizhik

W.J. Zakrzewski



Abstract

We study the long-range electron and energy transfer mediated by solitons in a quasi-one-dimensional molecular chain (conjugated polymer, alpha-helical macromolecule, etc.) weakly bound to a donor and an acceptor. We show that for certain sets of parameter values in such systems an electron, initially located at the donor molecule, can tunnel to the molecular chain, where it becomes self-trapped in a soliton state, and propagates to the opposite end of the chain practically without energy dissipation. Upon reaching the end, the electron can either bounce back and move in the opposite direction or, for suitable parameter values of the system, tunnel to the acceptor. We estimate the energy efficiency of the donor-acceptor electron transport depending on the parameter values. Our calculations show that the soliton mechanism works for the parameter values of polypeptide macromolecules and conjugated polymers. We also investigate the donor-acceptor electron transport in thermalized molecular chains.

Citation

Brizhik, L., Piette, B., & Zakrzewski, W. (2014). Donor-acceptor electron transport mediated by solitons. Physical review E: Statistical, nonlinear, and soft matter physics, 90(5), Article 052915. https://doi.org/10.1103/physreve.90.052915

Journal Article Type Article
Acceptance Date Sep 19, 2014
Online Publication Date Nov 17, 2014
Publication Date Nov 17, 2014
Deposit Date Dec 8, 2014
Publicly Available Date Dec 8, 2014
Journal Physical review . E, Statistical, nonlinear, and soft matter physics
Print ISSN 1539-3755
Electronic ISSN 1550-2376
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 90
Issue 5
Article Number 052915
DOI https://doi.org/10.1103/physreve.90.052915

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Copyright Statement
Reprinted with permission from the American Physical Society: Brizhik, L. S., Piette, B. M. A. G. and Zakrzewski, W. J. (2014) 'Donor-acceptor electron transport mediated by solitons.', Physical review E, 90 (5): 052915. © 2014 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.





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