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Theoretical Description of Attosecond X-ray Absorption Spectroscopy of Frenkel Exciton Dynamics

Frenkel excitons are responsible for the transport of light energy in many molecular systems. Coherent electron dynamics govern the initial stage of Frenkel-exciton transfer. Capability to follow coherent exciton dynamics in real time will help to reveal their actual contribution to the efficiency o...

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Autores principales: Hansen, Tim, Bezriadina, Tatiana, Popova-Gorelova, Daria
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10254768/
https://www.ncbi.nlm.nih.gov/pubmed/37298978
http://dx.doi.org/10.3390/molecules28114502
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author Hansen, Tim
Bezriadina, Tatiana
Popova-Gorelova, Daria
author_facet Hansen, Tim
Bezriadina, Tatiana
Popova-Gorelova, Daria
author_sort Hansen, Tim
collection PubMed
description Frenkel excitons are responsible for the transport of light energy in many molecular systems. Coherent electron dynamics govern the initial stage of Frenkel-exciton transfer. Capability to follow coherent exciton dynamics in real time will help to reveal their actual contribution to the efficiency of light-harvesting. Attosecond X-ray pulses are the tool with the necessary temporal resolution to resolve pure electronic processes with atomic sensitivity. We describe how attosecond X-ray pulses can probe coherent electronic processes during Frenkel-exciton transport in molecular aggregates. We analyze time-resolved absorption cross section taking broad spectral bandwidth of an attosecond pulse into account. We demonstrate that attosecond X-ray absorption spectra can reveal delocalization degree of coherent exciton transfer dynamics.
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spelling pubmed-102547682023-06-10 Theoretical Description of Attosecond X-ray Absorption Spectroscopy of Frenkel Exciton Dynamics Hansen, Tim Bezriadina, Tatiana Popova-Gorelova, Daria Molecules Article Frenkel excitons are responsible for the transport of light energy in many molecular systems. Coherent electron dynamics govern the initial stage of Frenkel-exciton transfer. Capability to follow coherent exciton dynamics in real time will help to reveal their actual contribution to the efficiency of light-harvesting. Attosecond X-ray pulses are the tool with the necessary temporal resolution to resolve pure electronic processes with atomic sensitivity. We describe how attosecond X-ray pulses can probe coherent electronic processes during Frenkel-exciton transport in molecular aggregates. We analyze time-resolved absorption cross section taking broad spectral bandwidth of an attosecond pulse into account. We demonstrate that attosecond X-ray absorption spectra can reveal delocalization degree of coherent exciton transfer dynamics. MDPI 2023-06-01 /pmc/articles/PMC10254768/ /pubmed/37298978 http://dx.doi.org/10.3390/molecules28114502 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Hansen, Tim
Bezriadina, Tatiana
Popova-Gorelova, Daria
Theoretical Description of Attosecond X-ray Absorption Spectroscopy of Frenkel Exciton Dynamics
title Theoretical Description of Attosecond X-ray Absorption Spectroscopy of Frenkel Exciton Dynamics
title_full Theoretical Description of Attosecond X-ray Absorption Spectroscopy of Frenkel Exciton Dynamics
title_fullStr Theoretical Description of Attosecond X-ray Absorption Spectroscopy of Frenkel Exciton Dynamics
title_full_unstemmed Theoretical Description of Attosecond X-ray Absorption Spectroscopy of Frenkel Exciton Dynamics
title_short Theoretical Description of Attosecond X-ray Absorption Spectroscopy of Frenkel Exciton Dynamics
title_sort theoretical description of attosecond x-ray absorption spectroscopy of frenkel exciton dynamics
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10254768/
https://www.ncbi.nlm.nih.gov/pubmed/37298978
http://dx.doi.org/10.3390/molecules28114502
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