Molecular asymmetry and rigidification as strategies to activate and enhance thermally activated delayed fluorescence in deep-blue MR-TADF emitters.
作者信息
Weerasinghe Rangani Wathsala, Dos Santos John Marques, Chitose Youhei, Matulaitis Tomas, Warriner Stuart L, Barman Debasish, Chan Chin-Yiu, Tsuchiya Youichi, Zysman-Colman Eli, Adachi Chihaya
机构信息
Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, Motooka, Nishi, Fukuoka 819-0395, Japan.
Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK.
出版信息
Phys Chem Chem Phys. 2024 Aug 14;26(32):21337-21341. doi: 10.1039/d4cp02664k.
Two novel deep-blue multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters, 1B-CzCrs and 2B-CzCrs, containing a fused carbazole unit were synthesized. The carbazole contributed to the emergence of TADF in these small molecules. Particularly, organic light-emitting diodes with 1B-CzCrs doped in the mCP host achieve a maximum external quantum efficiency of 12.8% at CIE coordinates of (0.146, 0.062).
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