Interplay of exciton annihilation and transport in fifth order electronic spectroscopy

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10406480" target="_blank" >RIV/00216208:11320/20:10406480 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=0~3m5dHczU" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=0~3m5dHczU</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.chemphys.2019.110433" target="_blank" >10.1016/j.chemphys.2019.110433</a>

Result language
angličtina
Original language name
Interplay of exciton annihilation and transport in fifth order electronic spectroscopy
Original language description
Multidimensional fifth order spectroscopy is a sophisticated and specialized tool for probing bi-exciton dynamics. The complexity of the signals emitted into +/- 2 (K) over right arrow (1) -/+ 2 (K) over right arrow (2) + (K) over right arrow3 directions calls for a detailed theoretical treatment of 2D line shapes, including both exciton-exciton annihilation and intraband relaxation dynamics. Based on a master equation formalism, we discuss the signal's temporal evolution and clearly distinguish between intraband transport within first and second exciton manifolds. We prove analytically that signatures of single exciton transport vanish from spectrally integrated signals of parallel homo-aggregates of arbitrary length, while transport within the second manifold accounts for the diffusion limitations of annihilation. In an effort to model fifth order electronic spectra of tractably small systems, we develop a dynamical model for molecular dimers and trimers. We show that fifth order two-dimensional spectroscopy allows to track and pinpoint population transfer- and annihilation dynamics of bi-excitons, without the need to perform and analyse intensity dependent experiments.
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
—
OECD FORD branch
10300 - Physical sciences

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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