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An Air‐ and Moisture‐stable Zinc(II) Carbene Dithiolate Dimer Showing Fast Thermally Activated Delayed Fluorescence and Dexter Energy Transfer Catalysis

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2023

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Mrózek, Ondřej
Mitra, Mousree
Hupp, Bejamin
Belyaev, Andrey
Lüdtke, Nora
Wagner, Dorothee
Wenger, Oliver S.
Marian, Christel M.
Steffen, Andreas

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http://nbn-resolving.de/urn:nbn:de:bsz:352-2-14je3y004cztm4
DOI (zitierfähiger Link)
https://doi.org/10.1002/chem.202203980
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CC BY-NC 4.0

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Deutsche Forschungsgemeinschaft (DFG): STE 1834/7-1
Deutsche Forschungsgemeinschaft (DFG): MA 1051/18-1
Deutsche Forschungsgemeinschaft (DFG): INST 212/455-1 FUGG
Deutsche Forschungsgemeinschaft (DFG): INST 212/430-1 FUGG
Deutsche Forschungsgemeinschaft (DFG): WA 5012/1-1

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Published

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Chemistry - A European Journal. Wiley. 2023, 29(23), e202203980. ISSN 0947-6539. eISSN 1521-3765. Verfügbar unter: doi: 10.1002/chem.202203980

Zusammenfassung

A dimeric ZnII carbene complex featuring bridging and chelating benzene‐1,2‐dithiolate ligands is highly stable towards air and water. The donor‐Zn‐acceptor structure leads to visible light emission in the solid state, solution and polymer matrices with λmax between 577–657 nm and, for zinc(II) complexes, unusually high radiative rate constants for triplet exciton decay of up to kr=1.5×105 s−1 at room temperature. Variable temperature and DFT/MRCI studies show that a small energy gap between the 1/3LL/LMCT states of only 79 meV is responsible for efficient thermally activated delayed fluorescence (TADF). Time‐resolved luminescence and transient absorption studies confirm the occurrence of long‐lived, dominantly ligand‐to‐ligand charge transfer excited states in solution, allowing for application in Dexter energy transfer photocatalysis.

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Fachgebiet (DDC)
540 Chemie

Schlagwörter

carbenes, luminescence, photocatalysis, TADF, zinc

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ISO 690MRÓZEK, Ondřej, Mousree MITRA, Bejamin HUPP, Andrey BELYAEV, Nora LÜDTKE, Dorothee WAGNER, Cui WANG, Oliver S. WENGER, Christel M. MARIAN, Andreas STEFFEN, 2023. An Air‐ and Moisture‐stable Zinc(II) Carbene Dithiolate Dimer Showing Fast Thermally Activated Delayed Fluorescence and Dexter Energy Transfer Catalysis. In: Chemistry - A European Journal. Wiley. 2023, 29(23), e202203980. ISSN 0947-6539. eISSN 1521-3765. Verfügbar unter: doi: 10.1002/chem.202203980
BibTex
@article{Mrozek2023-04-21Moist-74141,
  title={An Air‐ and Moisture‐stable Zinc(II) Carbene Dithiolate Dimer Showing Fast Thermally Activated Delayed Fluorescence and Dexter Energy Transfer Catalysis},
  year={2023},
  doi={10.1002/chem.202203980},
  number={23},
  volume={29},
  issn={0947-6539},
  journal={Chemistry - A European Journal},
  author={Mrózek, Ondřej and Mitra, Mousree and Hupp, Bejamin and Belyaev, Andrey and Lüdtke, Nora and Wagner, Dorothee and Wang, Cui and Wenger, Oliver S. and Marian, Christel M. and Steffen, Andreas},
  note={Article Number: e202203980}
}
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