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Color tuning of multi-resonant thermally activated delayed fluorescence emitters based on fully fused polycyclic amine/carbonyl frameworks
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dc.contributor.author | dos Santos, John Marques | |
dc.contributor.author | Chan, Chin-Yiu | |
dc.contributor.author | Tang, Shi | |
dc.contributor.author | Hall, David | |
dc.contributor.author | Matulaitis, Tomas | |
dc.contributor.author | Cordes, David B. | |
dc.contributor.author | Slawin, Alexandra M. Z. | |
dc.contributor.author | Tsuchiya, Youichi | |
dc.contributor.author | Edman, Ludvig | |
dc.contributor.author | Adachi, Chihaya | |
dc.contributor.author | Olivier, Yoann | |
dc.contributor.author | Zysman-Colman, Eli | |
dc.date.accessioned | 2023-05-17T12:30:08Z | |
dc.date.available | 2023-05-17T12:30:08Z | |
dc.date.issued | 2023-06-28 | |
dc.identifier | 286142764 | |
dc.identifier | 1f951945-eb63-43c5-af88-79beb7667152 | |
dc.identifier | 85159346152 | |
dc.identifier.citation | dos Santos , J M , Chan , C-Y , Tang , S , Hall , D , Matulaitis , T , Cordes , D B , Slawin , A M Z , Tsuchiya , Y , Edman , L , Adachi , C , Olivier , Y & Zysman-Colman , E 2023 , ' Color tuning of multi-resonant thermally activated delayed fluorescence emitters based on fully fused polycyclic amine/carbonyl frameworks ' , Journal of Materials Chemistry C , vol. 11 , no. 24 , pp. 8263-8273 . https://doi.org/10.1039/d3tc00641g | en |
dc.identifier.issn | 2050-7526 | |
dc.identifier.other | Jisc: 1076834 | |
dc.identifier.other | publisher-id: d3tc00641g | |
dc.identifier.other | ORCID: /0000-0003-0470-7356/work/135454510 | |
dc.identifier.other | ORCID: /0000-0002-9527-6418/work/135454836 | |
dc.identifier.other | ORCID: /0000-0002-5366-9168/work/135454903 | |
dc.identifier.other | ORCID: /0000-0001-7183-6022/work/135455110 | |
dc.identifier.uri | https://hdl.handle.net/10023/27635 | |
dc.description | Funding: The St Andrews team would like to thank EPSRC (EP/P010482/1) and the Leverhulme Trust (RPG-2016-047) for financial support. Computational resources have been provided by the Consortium des Équipements de Calcul Intensif (CÉCI), funded by the Fonds de la Recherche Scientifiques de Belgique (F. R. S.-FNRS) under Grant no. 2.5020.11. Y. O. acknowledges funding by the Fonds de la Recherche Scientifique-FNRS under Grant no. F.4534.21 (MIS-IMAGINE). | en |
dc.description.abstract | Two novel π-extended amine/carbonyl-based multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters have been designed and synthesized. The two emitters are isomeric, composed of nine fused rings and show green-yellow emission. Sym-DiDiKTa and Asym-DiDiKTa possess tert-butyl groups distributed in a symmetrical and asymmetrical fashion, respectively, which significantly impact the single-crystal packing structure. The two compounds possess similar singlet–triplet energy gaps, ΔEST, of around 0.23 eV, narrowband emission characterized by a full-width at half-maximum, FWHM, of 29 nm and a photoluminescence quantum yield, ΦPL, of 70% and 53% for the symmetric and asymmetric counterparts, respectively, in toluene. Investigation in OLEDs demonstrated that the devices with Sym-DiDiKTa and Asym-DiDiKTa displayed electroluminescence maxima of 543 and 544 nm, and maximum external quantum efficiencies (EQEmax) of 9.8% and 10.5%, respectively. The maximum EQE was further improved to 19.9% by employing a hyperfluorescence strategy. We further present the first example of a neutral MR-TADF emitter incorporated in a LEC device where Sym-DiDiKTa acts as the emitter. The LEC shows a λEL at 551 nm and FWHM of 60 nm with luminance of 300 cd m−2 and a fast turn-on time of less than 2 s to 100 cd m−2. | |
dc.format.extent | 11 | |
dc.format.extent | 2168097 | |
dc.language.iso | eng | |
dc.relation.ispartof | Journal of Materials Chemistry C | en |
dc.subject | QD Chemistry | en |
dc.subject | DAS | en |
dc.subject | MCC | en |
dc.subject.lcc | QD | en |
dc.title | Color tuning of multi-resonant thermally activated delayed fluorescence emitters based on fully fused polycyclic amine/carbonyl frameworks | en |
dc.type | Journal article | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.sponsor | The Leverhulme Trust | en |
dc.contributor.institution | University of St Andrews. EaSTCHEM | en |
dc.contributor.institution | University of St Andrews. School of Chemistry | en |
dc.contributor.institution | University of St Andrews. Institute of Behavioural and Neural Sciences | en |
dc.contributor.institution | University of St Andrews. Centre for Energy Ethics | en |
dc.identifier.doi | 10.1039/d3tc00641g | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | EP/P010482/1 | en |
dc.identifier.grantnumber | RPG-2016-047 | en |
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