التفاصيل البيبلوغرافية
| العنوان: |
Charge transfer mechanisms in DNA at finite temperatures: From quasiballistic to anomalous subdiffusive charge transfer. |
| المؤلفون: |
Lima RPA; GISC and GFTC, Instituto de Física, Universidade Federal de Alagoas, Maceió AL 57072-970, Brazil., Malyshev AV; GISC, Departamento de Física de Materiales, Universidad Complutense, E-28040 Madrid, Spain.; Ioffe Physical-Technical Institute, St-Petersburg, Russia. |
| المصدر: |
Physical review. E [Phys Rev E] 2022 Aug; Vol. 106 (2-1), pp. 024414. |
| نوع المنشور: |
Journal Article |
| اللغة: |
English |
| بيانات الدورية: |
Publisher: American Physical Society Country of Publication: United States NLM ID: 101676019 Publication Model: Print Cited Medium: Internet ISSN: 2470-0053 (Electronic) Linking ISSN: 24700045 NLM ISO Abbreviation: Phys Rev E Subsets: PubMed not MEDLINE; MEDLINE |
| أسماء مطبوعة: |
Original Publication: Ridge, NY : American Physical Society, [2016]- |
| مستخلص: |
We address various regimes of charge transfer in DNA within the framework of the Peyrard-Bishop-Holstein model and analyze them from the standpoint of the characteristic size and timescales of the electronic and vibrational subsystems. It is demonstrated that a polaron is an unstable configuration within a broad range of temperatures and therefore polaronic contribution to the charge transport is irrelevant. We put forward an alternative fluctuation-governed charge transfer mechanism and show that the charge transfer can be quasiballistic at low temperatures, diffusive or mixed at intermediate temperatures, and subdiffusive close to the DNA denaturation transition point. Dynamic fluctuations in the vibrational subsystem is the key ingredient of our proposed mechanism which allows for explanation of all charge transfer regimes at finite temperatures. In particular, we demonstrate that in the most relevant regime of high temperatures (above the aqueous environment freezing point), the electron dynamics is completely governed by relatively slow fluctuations of the mechanical subsystem. We argue also that our proposed analysis methods and mechanisms can be relevant for the charge transfer in other organic systems, such as conjugated polymers, molecular aggregates, α-helices, etc. |
| تواريخ الأحداث: |
Date Created: 20220916 Latest Revision: 20220916 |
| رمز التحديث: |
20240628 |
| DOI: |
10.1103/PhysRevE.106.024414 |
| PMID: |
36109995 |
| قاعدة البيانات: |
MEDLINE |
