#6594. High-efficiency orange thermally activated delayed fluorescence by secondary acceptor modification

December 2026publication date
Proposal available till 05-06-2025
4 total number of authors per manuscript0 $

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Journal’s subject area:
Nuclear Energy and Engineering;
Materials Science (miscellaneous);
Energy Engineering and Power Technology;
Fuel Technology;
Renewable Energy, Sustainability and the Environment;
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Abstract:
The secondary donor/acceptor has significant effects on the excited-state properties and efficiencies of thermally activated delayed fluorescent (TADF) emitters. Here, we use two electron-withdrawing units (cyanobenzene and trifluoromethylbenzene) as a secondary acceptor to control the electron-withdrawing ability of the dibenzo[a,c]phenazine (BP) acceptor core based on the BP-triphenylamine (TPA) backbone. The synthesized orange-red TADF emitters (CN-BP-TPA and CF3-BP-TPA) exhibit the singlet-triplet energy splitting (?EST) values of 0.19 and 0.23 eV, respectively.
Keywords:
Hetero-acceptor units; High photoluminescence quantum yield; OLED; Orange emission; TADF emitters

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