Fast Delayed Emission in New Pyridazine-Based Compounds

Three novel donor-acceptor molecules comprising the underexplored pyridazine (Pydz) acceptor moiety have been synthesized and their structural, electrochemical and photophysical properties thoroughly characterized. Combining Pydz with two phenoxazine donor units linked via a phenyl bridge in a meta...

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Autores principales: Krotkus, Simonas, Matulaitis, Tomas, Diesing, Stefan, Copley, Graeme, Archer, Emily, Keum, Changmin, Cordes, David B., Slawin, Alexandra M. Z., Gather, Malte C., Zysman-Colman, Eli, Samuel, Ifor D. W.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7817954/
https://www.ncbi.nlm.nih.gov/pubmed/33490031
http://dx.doi.org/10.3389/fchem.2020.572862
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author Krotkus, Simonas
Matulaitis, Tomas
Diesing, Stefan
Copley, Graeme
Archer, Emily
Keum, Changmin
Cordes, David B.
Slawin, Alexandra M. Z.
Gather, Malte C.
Zysman-Colman, Eli
Samuel, Ifor D. W.
author_facet Krotkus, Simonas
Matulaitis, Tomas
Diesing, Stefan
Copley, Graeme
Archer, Emily
Keum, Changmin
Cordes, David B.
Slawin, Alexandra M. Z.
Gather, Malte C.
Zysman-Colman, Eli
Samuel, Ifor D. W.
author_sort Krotkus, Simonas
collection PubMed
description Three novel donor-acceptor molecules comprising the underexplored pyridazine (Pydz) acceptor moiety have been synthesized and their structural, electrochemical and photophysical properties thoroughly characterized. Combining Pydz with two phenoxazine donor units linked via a phenyl bridge in a meta configuration (dPXZMePydz) leads to high reverse intersystem crossing rate k(RISC) = 3.9 · 10(6) s(−1) and fast thermally activated delayed fluorescence (TADF) with <500 ns delayed emission lifetime. Efficient triplet harvesting via the TADF mechanism is demonstrated in OLEDs using dPXZMePydz as the emitter but does not occur for compounds bearing weaker donor units.
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spelling pubmed-78179542021-01-22 Fast Delayed Emission in New Pyridazine-Based Compounds Krotkus, Simonas Matulaitis, Tomas Diesing, Stefan Copley, Graeme Archer, Emily Keum, Changmin Cordes, David B. Slawin, Alexandra M. Z. Gather, Malte C. Zysman-Colman, Eli Samuel, Ifor D. W. Front Chem Chemistry Three novel donor-acceptor molecules comprising the underexplored pyridazine (Pydz) acceptor moiety have been synthesized and their structural, electrochemical and photophysical properties thoroughly characterized. Combining Pydz with two phenoxazine donor units linked via a phenyl bridge in a meta configuration (dPXZMePydz) leads to high reverse intersystem crossing rate k(RISC) = 3.9 · 10(6) s(−1) and fast thermally activated delayed fluorescence (TADF) with <500 ns delayed emission lifetime. Efficient triplet harvesting via the TADF mechanism is demonstrated in OLEDs using dPXZMePydz as the emitter but does not occur for compounds bearing weaker donor units. Frontiers Media S.A. 2021-01-07 /pmc/articles/PMC7817954/ /pubmed/33490031 http://dx.doi.org/10.3389/fchem.2020.572862 Text en Copyright © 2021 Krotkus, Matulaitis, Diesing, Copley, Archer, Keum, Cordes, Slawin, Gather, Zysman-Colman and Samuel. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Chemistry
Krotkus, Simonas
Matulaitis, Tomas
Diesing, Stefan
Copley, Graeme
Archer, Emily
Keum, Changmin
Cordes, David B.
Slawin, Alexandra M. Z.
Gather, Malte C.
Zysman-Colman, Eli
Samuel, Ifor D. W.
Fast Delayed Emission in New Pyridazine-Based Compounds
title Fast Delayed Emission in New Pyridazine-Based Compounds
title_full Fast Delayed Emission in New Pyridazine-Based Compounds
title_fullStr Fast Delayed Emission in New Pyridazine-Based Compounds
title_full_unstemmed Fast Delayed Emission in New Pyridazine-Based Compounds
title_short Fast Delayed Emission in New Pyridazine-Based Compounds
title_sort fast delayed emission in new pyridazine-based compounds
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7817954/
https://www.ncbi.nlm.nih.gov/pubmed/33490031
http://dx.doi.org/10.3389/fchem.2020.572862
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