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Electron-withdrawing group modified carbazolophane donors for deep blue thermally activated delayed fluorescence OLEDs

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dc.contributor.authorGupta, Abhishek Kumar
dc.contributor.authorZhang, Zhen
dc.contributor.authorSpuling, Eduard
dc.contributor.authorKaczmarek, Maria
dc.contributor.authorWang, Yichuan
dc.contributor.authorHassan, Zahid
dc.contributor.authorSamuel, Ifor D.W.
dc.contributor.authorBraese, Stefan
dc.contributor.authorZysman-Colman, Eli
dc.date.accessioned2021-09-21T13:30:06Z
dc.date.available2021-09-21T13:30:06Z
dc.date.issued2021-09-03
dc.identifier275956633
dc.identifierd824a0ac-9264-44e8-8dda-04fb59880576
dc.identifier85117689597
dc.identifier000699779100001
dc.identifier.citationGupta , A K , Zhang , Z , Spuling , E , Kaczmarek , M , Wang , Y , Hassan , Z , Samuel , I D W , Braese , S & Zysman-Colman , E 2021 , ' Electron-withdrawing group modified carbazolophane donors for deep blue thermally activated delayed fluorescence OLEDs ' , Materials Advances , vol. Advance Article . https://doi.org/10.1039/D1MA00738Fen
dc.identifier.issn2633-5409
dc.identifier.otherRIS: urn:EFF58F094A31D36DB61651B37F2B1B99
dc.identifier.otherORCID: /0000-0001-7183-6022/work/100549695
dc.identifier.urihttps://hdl.handle.net/10023/23993
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). The German Research Foundation (formally Deutsche Forschungsgemeinschaft DFG) in the framework of SFB1176 Cooperative Research Centre “Molecular Structuring of Soft Matter” (CRC1176, A4, B3, C2, C6) and the cluster 3D Matter made to order all funded under Germany's Excellence Strategy 2082/1-390761711 are acknowledged for financial contributions.en
dc.description.abstractWe report two blue-emitting thermally activated delayed fluorescence (TADF) compounds employing a substituted carbazolophane (Czp) donor (indolo[2.2]paracyclophane). The compounds CNCzpPhTRZ and CF3CzpPhTRZ show emission maxima of 426 nm and 432 nm, respectively, with high photoluminescence quantum yields (ΦPL) of 73% and 80%, respectively. The singlet–triplet energy gap (ΔEST) of both emitters is 0.22 eV, resulting in long-delayed lifetimes of 132 μs for CNCzpPhTRZ and 158 μs for CF3CzpPhTRZ in PPT as the host matrix. Blue organic light-emitting diodes (OLEDs) showed maximum external quantum efficiencies (EQEs) of 7.4% for CNCzpPhTRZ and 11.6% for CF3CzpPhTRZ with electroluminescence maxima of ca. 460 nm.
dc.format.extent4919384
dc.language.isoeng
dc.relation.ispartofMaterials Advancesen
dc.subjectTADFen
dc.subjectOLEDsen
dc.subjectDeep blueen
dc.subjectParacyclophaneen
dc.subjectQD Chemistryen
dc.subjectDASen
dc.subject.lccQDen
dc.titleElectron-withdrawing group modified carbazolophane donors for deep blue thermally activated delayed fluorescence OLEDsen
dc.typeJournal articleen
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. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Centre for Biophotonicsen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.identifier.doi10.1039/D1MA00738F
dc.description.statusPeer revieweden
dc.identifier.grantnumberNF171163en
dc.identifier.grantnumberEP/P010482/1en
dc.identifier.grantnumberep/l017008/1en


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