Excitation dynamics in polyacene molecules on rare-gas clusters
| Autor: | Matthias Bohlen, Rupert Michiels, Moritz Michelbach, Selmane Ferchane, Michael Walter, Alexander Eisfeld, Frank Stienkemeier |
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| Přispěvatelé: | Publica |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Chemical Physics (physics.chem-ph)
Argon lasers anthracene FOS: Physical sciences General Physics and Astronomy rare-gas clusters Argon clusters excitation dynamics solid argon laser excitation decay dynamics Spectra's Physics - Chemical Physics argon Pentacenes Physics::Atomic and Molecular Clusters excitation density molecules Physical and Theoretical Chemistry Physics::Chemical Physics cluster sizes Tetracene |
| Zdroj: | The Journal of Chemical Physics |
| Popis: | Laser-induced fluorescence spectra and excitation lifetimes of anthracene, tetracene, and pentacene molecules attached to the surface of solid argon clusters have been measured with respect to cluster size, density of molecules, and excitation density. Results are compared to previous studies on the same sample molecules attached to neon clusters. A contrasting lifetime behavior of anthracene on neon and argon clusters is discussed, and mechanisms are suggested to interpret the results. Although both neon and argon clusters are considered to be weakly interacting environments, we find that the excitation decay dynamics of the studied acenes depends significantly on the cluster material. Moreover, we find even qualitative differences regarding the dependence on the dopant density. Based on these observations, previous assignments of collective radiative and non-radiative decay mechanisms are discussed in the context of the new experimental findings.& nbsp;(c) 2022 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
| Databáze: | OpenAIRE |
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