Journal
CHEMISTRY LETTERS
Volume 48, Issue 2, Pages 126-129Publisher
CHEMICAL SOC JAPAN
DOI: 10.1246/cl.180813
Keywords
Thermally activated delayed fluorescence (TADF); Reverse intersystem crossing (RISC); Long triplet lifetime
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Funding
- Japan Science and Technology Agency (JST), ERATO, Adachi Molecular Exciton Engineering Project, under JST ERATO, Japan [JPMJER1305]
- Japan Society for the Promotion of Science (JSPS) KAKENHI [JP17J04907, JP18H02047]
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We report an efficient luminescent molecule exhibiting thermally activated delayed fluorescence with a long-delayed fluorescence lifetime of 0.8 ms. Although the reverse intersystem crossing rate constant is small at 2.1 x 10(3) s(-1), the molecule shows a high photoluminescence quantum yield of 89 +/- 2%, indicating the suppression of nonradiative decay from the triplet state.
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