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Fast delayed emission in new pyridazine-based compounds

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dc.contributor.authorKrotkus, Simonas
dc.contributor.authorMatulaitis, Tomas
dc.contributor.authorDiesing, Stefan
dc.contributor.authorCopley, Graeme Jeffrey
dc.contributor.authorArcher, Emily
dc.contributor.authorKeum, Changmin
dc.contributor.authorCordes, David Bradford
dc.contributor.authorSlawin, Alexandra Martha Zoya
dc.contributor.authorGather, Malte Christian
dc.contributor.authorZysman-Colman, Eli
dc.contributor.authorSamuel, Ifor David William
dc.date.accessioned2021-01-08T10:30:08Z
dc.date.available2021-01-08T10:30:08Z
dc.date.issued2021-01-07
dc.identifier270852625
dc.identifiere394f78f-6ddf-4df6-ab8d-36b0596a80ad
dc.identifier85099730077
dc.identifier000609128000001
dc.identifier.citationKrotkus , S , Matulaitis , T , Diesing , S , Copley , G J , Archer , E , Keum , C , Cordes , D B , Slawin , A M Z , Gather , M C , Zysman-Colman , E & Samuel , I D W 2021 , ' Fast delayed emission in new pyridazine-based compounds ' , Frontiers in Chemistry , vol. 8 , 572862 . https://doi.org/10.3389/fchem.2020.572862en
dc.identifier.issn2296-2646
dc.identifier.otherORCID: /0000-0002-9527-6418/work/86537556
dc.identifier.otherORCID: /0000-0002-5366-9168/work/86537888
dc.identifier.otherORCID: /0000-0002-4857-5562/work/86538152
dc.identifier.otherORCID: /0000-0001-7183-6022/work/86538156
dc.identifier.otherORCID: /0000-0003-0470-7356/work/86538351
dc.identifier.urihttps://hdl.handle.net/10023/21245
dc.descriptionWe thank the EPSRC for financial support (grants EP/P010482/1 and EP/R035164/1). We thank the EPSRC UK National Mass Spectrometry Facility at Swansea University for analytical services. G.C. acknowledges funding by the European Commission through a Marie Skłodowska Individual Fellowship (No. 799302). C.K. acknowledges support from the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2017R1A6A3A03012331).en
dc.description.abstractThree 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 krISC = 3.9 ∙ 106 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.
dc.format.extent2268489
dc.language.isoeng
dc.relation.ispartofFrontiers in Chemistryen
dc.subjectThermally activated delayed fluorescence (TADF)en
dc.subjectPyridazineen
dc.subjectOrganic light emission device (OLED)en
dc.subjectReverse intersystem crossing (RISC)en
dc.subjectDonor-Acceptor (D-A) architectureen
dc.subjectQD Chemistryen
dc.subjectDASen
dc.subject.lccQDen
dc.titleFast delayed emission in new pyridazine-based compoundsen
dc.typeJournal articleen
dc.contributor.sponsorEPSRCen
dc.contributor.sponsorEPSRCen
dc.contributor.sponsorEuropean Commissionen
dc.contributor.institutionUniversity of St Andrews. Organic Semiconductor Centreen
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.contributor.institutionUniversity of St Andrews. Sir James Mackenzie Institute for Early Diagnosisen
dc.contributor.institutionUniversity of St Andrews. Centre for Biophotonicsen
dc.contributor.institutionUniversity of St Andrews. Biomedical Sciences Research Complexen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.identifier.doihttps://doi.org/10.3389/fchem.2020.572862
dc.description.statusPeer revieweden
dc.date.embargoedUntil2021-01-07
dc.identifier.grantnumberEP/P010482/1en
dc.identifier.grantnumberEP/R035164/1en
dc.identifier.grantnumber799302en


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