| Autor: |
Merve Karaman, Abhishek Kumar Gupta, Subeesh Madayanad Suresh, Tomas Matulaitis, Lorenzo Mardegan, Daniel Tordera, Henk J Bolink, Sen Wu, Stuart Warriner, Ifor D Samuel, Eli Zysman-Colman |
| Přispěvatelé: |
European Commission, The Royal Society, University of St Andrews. EaSTCHEM, University of St Andrews. School of Chemistry, University of St Andrews. Institute of Behavioural and Neural Sciences, University of St Andrews. Organic Semiconductor Centre, University of St Andrews. School of Physics and Astronomy, University of St Andrews. Centre for Biophotonics, University of St Andrews. Condensed Matter Physics, University of St Andrews. Centre for Energy Ethics |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Karaman, Merve Gupta, Abhishek Kumar Suresh, Subeesh Madayanad Matulaitis, Tomas Mardegan, Lorenzo Tordera Salvador, Daniel Bolink, Henk Wu, Sen Warriner, Stuart Samuel, Ifor D. Zysman-Colman, Eli 2022 Ionic multiresonant thermally activated delayed fluorescence emitters for light emitting electrochemical cells Beilstein Journal Of Organic Chemistry 18 1311 1321 |
| Popis: |
Funding: M. K. would like to thank 2214-A International Research Fellowship Programme for Ph.D. students (1059B141900585). This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska Curie grant agreement No 838885 (NarrowbandSSL). S.M.S. acknowledges support from the Marie Skłodowska-Curie Individual Fellowship (grant agreement No 838885 NarrowbandSSL). A. K. G. is grateful to the Royal Society for Newton International Fellowship NF171163. L.M acknowledges that the project who gave rise to these results received support from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme Grant agreement No. 834431, the Spanish Ministry of Science, Innovation and Universities (MICIU, RTI2018-095362-A-I00, and EQC2018-004888-P) and the Comunitat Valenciana (IDIFEDER/2020/063 and PROMETEU/2020/077). D.T. acknowledges support from the Comunitat Valenciana (CIGE/2021/0). We designed and synthesized two new ionic thermally activated delayed fluorescent (TADF) emitters that are charged analogues of a known multiresonant TADF (MR-TADF) compound, DiKTa . The emission of the charged derivatives is red-shifted compared to the parent compound. For instance, DiKTa-OBuIm emits in the green (λPL = 499 nm, 1 wt % in mCP) while DiKTa-DPA-OBuIm emits in the red (λPL = 577 nm, 1 wt % in mCP). In 1 wt % mCP films, both emitters showed good photoluminescence quantum yields of 71% and 61%, and delayed lifetimes of 316.6 μs and 241.7 μs, respectively, for DiKTa-OBuIm and DiKTa-DPA-OBuIm , leading to reverse intersystem crossing rates of 2.85 × 103 s−1 and 3.04 × 103 s−1. Light-emitting electrochemical cells were prepared using both DiKTa-OBuIm and DiKTa-DPA-OBuIm as active emitters showing green (λmax = 534 nm) and red (λmax = 656 nm) emission, respectively. Publisher PDF |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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