Ultrafast energy transfer with competing channels: Non-equilibrium Forster and Modified Redfield theories

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10370638" target="_blank" >RIV/00216208:11320/17:10370638 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1063/1.4981523" target="_blank" >http://dx.doi.org/10.1063/1.4981523</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.4981523" target="_blank" >10.1063/1.4981523</a>

Result language
angličtina
Original language name
Ultrafast energy transfer with competing channels: Non-equilibrium Forster and Modified Redfield theories
Original language description
We derive equations of motion for the reduced density matrix of a molecular system which undergoes energy transfer dynamics competing with fast internal conversion channels. Environmental degrees of freedom of such a system have no time to relax to quasi-equilibrium in the electronic excited state of the donor molecule, and thus the conditions of validity of Forster and Modified Redfield theories in their standard formulations do not apply. We derive non-equilibrium versions of the two well-known rate theories and apply them to the case of carotenoid-chlorophyll energy transfer. Although our reduced density matrix approach does not account for the formation of vibronic excitons, it still confirms the important role of the donor ground-state vibrational states in establishing the resonance energy transfer conditions. We show that it is essential to work with a theory valid in a strong system-bath interaction regime to obtain correct dependence of the rates on donor-acceptor energy gap. Published by AIP Publishing.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project
<a href="/en/project/GA14-25752S" target="_blank" >GA14-25752S: Microscopic environmental determinants and self-regulation of photosynthetic energy transfer</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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