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Multi-resonant thermally activated delayed fluorescent (MR-TADF) compounds as photocatalysts

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Date
09/01/2023
Author
Prentice, Callum
Morrison, James
Smith, Andrew D.
Zysman-Colman, Eli
Keywords
Kinetics
Multi-resonant thermally activated delayed fluorescence (MR-TADF)
Photocatalysis
Thermally activated delayed fluorescence (TADF)
QD Chemistry
DAS
MCC
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Abstract
Donor-acceptor (D-A) thermally activated delayed fluorescent (TADF) compounds, such as 4CzIPN, have become a widely used sub-class of organic photocatalysts for a plethora of photocatalytic reactions. Multi-resonant TADF (MR-TADF) compounds, a subclass of TADF emitters that are rigid nanographene derivatives, such as DiKTa and Mes3DiKTa, have to date not been explored as photocatalysts. In this study both DiKTa and Mes3DiKTa were found to give comparable or better product yield than 4CzIPN in a range of photocatalytic processes that rely upon reductive quenching, oxidative quenching, energy transfer and dual photocatalytic processes. In a model oxidative quench process, DiKTa and Mes3DiKTa gave increased reaction rates in comparison to 4CzIPN, with DiKTa being of particular interest due to the lower material cost (£0.94/mmol) compared to that of 4CzIPN (£3.26/mmol). These results suggest that DiKTa and Mes3DiKTa would be excellent additions to any chemist’s collection of photocatalysts.
Citation
Prentice , C , Morrison , J , Smith , A D & Zysman-Colman , E 2023 , ' Multi-resonant thermally activated delayed fluorescent (MR-TADF) compounds as photocatalysts ' , Chemistry - A European Journal , vol. 29 , no. 2 , e202202998 . https://doi.org/10.1002/chem.202202998
Publication
Chemistry - A European Journal
Status
Peer reviewed
DOI
https://doi.org/10.1002/chem.202202998
ISSN
0947-6539
Type
Journal article
Rights
Copyright © 2022 The Authors. Chemistry - A European Journal published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Description
Funding: Authors thank AstraZeneca for funding (C. P.).
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  • University of St Andrews Research
URL
https://doi.org/10.26434/chemrxiv-2022-mm6pw
URI
http://hdl.handle.net/10023/26399

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