Royal Society of Chemistry, Chemical Science, 34(13), p. 10119-10128, 2022
DOI: 10.1039/d2sc03342a
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The rigidification with simultaneous π-extension of TADF-active dye leads to fluorescent dopant with fine-tuned energy levels. These used as hyperfluorescent OLED device shows extraordinary EQE and brightness due to effective FRET and TTS processes.