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Molecular design and synthesis of dicarbazolophane-based centro-symmetric through-space donors for solution-processed thermally activated delayed fluorescence OLEDs

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Zhang_2021_OL_Molecular_AAM.pdf (2.530Mb)
Date
13/08/2021
Author
Zhang, Zhen
Diesing, Stefan
Crovini, Ettore
Gupta, Abhishek Kumar
Spuling, Eduard
Gua, Xuemin
Fuhr, Olaf
Nieger, Martin
Hassan, Zahid
Samuel, Ifor D. W.
Bräse, Stefan
Zysman-Colman, Eli
Funder
The Royal Society
EPSRC
EPSRC
EPSRC
European Commission
Grant ID
NF171163
ep/l017008/1
EP/P010482/1
EP/R035164/1
812872
Keywords
QD Chemistry
DAS
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Abstract
Conjugation-extended carbazolophane donors, dicarbazolophanes ( DCzp ), were designed and synthesized using a multifold stepwise Pd-catalyzed Buchwald–Hartwig amination/ring cyclization process. Furthermore, elaboration of the DCzp core is possible with the introduction of pendant carbazole derivative groups. This provides a way to tune the optoelectronic properties of the thermally activated delayed fluorescence (TADF) compounds DCzpTRZtBu , dtBuCzDCzpTRZtBu , and dMeOCzDCzpTRZtBu . Solution-processed organic light-emitting diodes (OLEDs) were fabricated and achieved a maximum external quantum efficiency (EQEmax) of 8.2% and an EQE of 7.9% at 100 cd/m2.
Citation
Zhang , Z , Diesing , S , Crovini , E , Gupta , A K , Spuling , E , Gua , X , Fuhr , O , Nieger , M , Hassan , Z , Samuel , I D W , Bräse , S & Zysman-Colman , E 2021 , ' Molecular design and synthesis of dicarbazolophane-based centro-symmetric through-space donors for solution-processed thermally activated delayed fluorescence OLEDs ' , Organic Letters , vol. Articles ASAP . https://doi.org/10.1021/acs.orglett.1c02273
Publication
Organic Letters
Status
Peer reviewed
DOI
https://doi.org/10.1021/acs.orglett.1c02273
ISSN
1523-7060
Type
Journal article
Rights
Copyright © 2021 American Chemical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1021/acs.orglett.1c02273
Description
The German Research Foundation (formally Deutsche Forschungsgemeinschaft DFG) in the framework of SFB1176 Co-operative Research Centre “Molecular Structuring of Soft Matter” (CRC1176, A4, B3, C2, C6) and the cluster “3D Matter Made to Order” funded under Germany’s Excellence Strategy 2082/1–390761711 are acknowledged for financial contributions. A. K. G. is thankful to the Royal Society for a Newton International Fellowship NF171163. E. Z.-C. and I. D. W. S. acknowledge support from EPSRC (EP/L017008, EP/P010482/1, EP/R035164/1). E. C. and E. Z.-C. acknowledge the EU Horizon 2020 grant agreement no. 812872 (TADFlife).
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  • University of St Andrews Research
URL
https://doi.org/10.33774/chemrxiv-2021-z10sw
URI
http://hdl.handle.net/10023/25844

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