Excitation dynamics and relaxation in a molecular heterodimer

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10129556" target="_blank" >RIV/00216208:11320/12:10129556 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.chemphys.2012.02.021" target="_blank" >http://dx.doi.org/10.1016/j.chemphys.2012.02.021</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.chemphys.2012.02.021" target="_blank" >10.1016/j.chemphys.2012.02.021</a>

Result language
angličtina
Original language name
Excitation dynamics and relaxation in a molecular heterodimer
Original language description
The exciton dynamics in a molecular heterodimer is studied as a function of differences in excitation and reorganization energies, asymmetry in transition dipole moments and excited state lifetimes. The heterodimer is composed of two molecules modeled astwo-level systems coupled by the resonance interaction. The system-bath coupling is taken into account as a modulating factor of the molecular excitation energy gap, while the relaxation to the ground state is treated phenomenologically. Comparison of the description of the excitation dynamics modeled using either the Redfield equations (secular and full forms) or the Hierarchical quantum master equation (HQME) is demonstrated and discussed. Possible role of the dimer as an excitation quenching centerin photosynthesis self-regulation is discussed. It is concluded that the system-bath interaction rather than the excitonic effect determines the excitation quenching ability of such a dimer. (C) 2012 Elsevier B.V. All rights reserved.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Project
<a href="/en/project/ME%20899" target="_blank" >ME 899: Theory of energy and charge transfer in natural and artificial ligh-harvesting systems and their investigation by spectroscopic methods</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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