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dc.contributor.authorGupta, Abhishek Kumar
dc.contributor.authorMatulaitis, Tomas
dc.contributor.authorCordes, David B.
dc.contributor.authorSlawin, Alexandra M. Z.
dc.contributor.authorSamuel, Ifor D. W.
dc.contributor.authorZysman-Colman, Eli
dc.date.accessioned2021-09-29T16:30:18Z
dc.date.available2021-09-29T16:30:18Z
dc.date.issued2021-09-23
dc.identifier275956900
dc.identifier6ac445f9-e39b-4597-b06d-5b2c9c3d8949
dc.identifier000767175100008
dc.identifier85125885942
dc.identifier.citationGupta , A K , Matulaitis , T , Cordes , D B , Slawin , A M Z , Samuel , I D W & Zysman-Colman , E 2021 , ' Highly twisted α-diketone-based thermally activated delayed fluorescence emitters and their use in organic light-emitting diodes ' , Canadian Journal of Chemistry , vol. Early View . https://doi.org/10.1139/cjc-2021-0208en
dc.identifier.issn0008-4042
dc.identifier.otherORCID: /0000-0002-9527-6418/work/100901067
dc.identifier.otherORCID: /0000-0002-5366-9168/work/100901103
dc.identifier.otherORCID: /0000-0001-7183-6022/work/100901526
dc.identifier.otherORCID: /0000-0003-0470-7356/work/100901633
dc.identifier.urihttps://hdl.handle.net/10023/24060
dc.descriptionAKG is grateful to the Royal Society for Newton International Fellowship NF171163. We acknowledge support from the Engineering and Physical Sciences Research Council of the UK (grants EP/P010482/1 and EP/L017008/1). We are also grateful for financial support from the University of St Andrews Restarting Research and Restarting Interdisciplinary Research Funding Schemes (SARRF and SARIRF) which are funded through the Scottish Funding Council grant reference SFC/AN/08/020.en
dc.description.abstractWe have designed a highly twisted small TADF emitter PXZ-α-DK based on an a-diketone (α-DK) as a strong acceptor and phenoxazine (PXZ) as a strong donor to obtain red-shifted emission in comparison to the equivalent a-diketone linked to 9,9-dimethyl-9,10-dihydroacridine (DMAC). The PXZ-α-DK shows emission at 586 nm and DMAC-α-DK shows emission at 548 nm in 1,3-bis(N-carbazolyl)benzene (mCP) host at 1.5 wt% doping of the emitter, with short-delayed lifetimes of 6.9 μs for PXZ-α-DK and 7.6 μs for DMAC-α-DK. OLEDs fabricated using these emitters show green electroluminescence at 555 nm for DMAC-α-DK, with a maximum external quantum efficiency, EQEmax, of 6.3%, and orange electroluminescence at 585 nm for PXZ-α-DK, with an EQEmax of 0.8%. We corroborate the optoelectronic properties of these emitters with DFT calculations.
dc.format.extent3224677
dc.language.isoeng
dc.relation.ispartofCanadian Journal of Chemistryen
dc.subjectTADFen
dc.subjectOLEDsen
dc.subjectα-diketoneen
dc.subjectRed-shift emissionen
dc.subjectQD Chemistryen
dc.subjectDASen
dc.subject.lccQDen
dc.titleHighly twisted α-diketone-based thermally activated delayed fluorescence emitters and their use in organic light-emitting diodesen
dc.typeJournal articleen
dc.contributor.sponsorScottish Funding Councilen
dc.contributor.sponsorThe Royal Societyen
dc.contributor.sponsorEPSRCen
dc.contributor.sponsorEPSRCen
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.contributor.institutionUniversity of St Andrews. Centre for Biophotonicsen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.identifier.doi10.1139/cjc-2021-0208
dc.description.statusPeer revieweden
dc.date.embargoedUntil2021-09-23
dc.identifier.grantnumberN/Aen
dc.identifier.grantnumberNF171163en
dc.identifier.grantnumberEP/P010482/1en
dc.identifier.grantnumberep/l017008/1en


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