Inês G. Tavares
Intramolecular interchromophore singlet-singlet and triplet-singlet energy transfer in a metal-free donor-acceptor emitter
Tavares, Inês G.; Enkvist, Erki; Kaimre, Joosep; Uri, Asko; Dias, Fernando B.
Authors
Abstract
In this work we demonstrate the occurrence of singlet to singlet, and triplet to singlet, intramolecular energy transfer between two thiophene-comprising donors (D) and a central perylene bisimide acceptor (A) covalently linked to each other trough a linker that separates the donor and acceptor moieties in a D-A-D structure. The designed metal-free organic tandem luminophore is herein designated as ARC-1467. Energy transfer from the excited triplet state of the thiophene donor to the singlet state of the perylene bisimide acceptor is observed in solution and in solid films of ARC-1467 dispersed in polystyrene. When the perylene bisimide acceptor is directly excited, the fluorescence decays with 4.9 ns lifetime. However, upon excitation of the donor unit in the near-UV region, delayed fluorescence of perylene bisimide with 5.7 μs lifetime is distinctly observed demonstrating the occurrence of energy transfer from the triplet state of the D unit to the perylene bisimide acceptor.
Citation
Tavares, I. G., Enkvist, E., Kaimre, J., Uri, A., & Dias, F. B. (2021). Intramolecular interchromophore singlet-singlet and triplet-singlet energy transfer in a metal-free donor-acceptor emitter. Journal of Luminescence, 237, Article 118183. https://doi.org/10.1016/j.jlumin.2021.118183
| Journal Article Type | Article |
|---|---|
| Acceptance Date | May 6, 2021 |
| Online Publication Date | May 18, 2021 |
| Publication Date | 2021-09 |
| Deposit Date | Jul 27, 2021 |
| Publicly Available Date | May 18, 2023 |
| Journal | Journal of Luminescence |
| Print ISSN | 0022-2313 |
| Publisher | Elsevier |
| Peer Reviewed | Peer Reviewed |
| Volume | 237 |
| Article Number | 118183 |
| DOI | https://doi.org/10.1016/j.jlumin.2021.118183 |
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http://creativecommons.org/licenses/by-nc-nd/4.0/
Copyright Statement
© 2021 This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
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