Multiplying the efficiency of red thermally activated delayed fluorescence emitter by introducing intramolecular hydrogen bond

• Published in: Chemical engineering journal (Lausanne, Switzerland : 1996) Vol. 448; p. 137717
• Main Authors: Yang, Hao-Yu, Zhang, Heng-yuan, Zhang, Ming, Fan, Xiao-chun, Lin, Hui, Tao, Si-Lu, Zheng, Cai-Jun, Zhang, Xiao-Hong
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.11.2022
• Subjects: Intramolecular hydrogen bond; Non-radiative decay; Radiative process; Red organic light-emitting diodes; Thermally activated delayed fluorescence; Red organic light-emitting diodes; Thermally activated delayed fluorescence; Radiative process; Non-radiative decay; Intramolecular hydrogen bond
• ISSN: 1385-8947
• DOI: 10.1016/j.cej.2022.137717

[Display omitted] •Three TADF emitters were synthesized by finely modifying the acceptor units.•The donor–acceptor intramolecular hydrogen bond is formed in TPA-APm.•TPA-APm exhibits both twofold higher kF and an order of magnitude lower knr.•TPA-APm-based red OLEDs achieved multiply increasing effi...