Controlling the electronic structures of triphenylene based sky blue TADF emitters by chemical modifications for high efficiency with shorter emission lifetimes

Synthetic progress of organic thermally activated delayed fluorescence emitters via C–H activation and functionalization

“…152 Kido's group employed this novel synthetic approach for designing the TADF emitter CNTP-DMAC, incorporating the triphenylene unit (Scheme 26c). 153 This emitter, featuring sky-blue emission and activated RISC processes, opened avenues for optimizing and developing high-performance TADF emitters and TADF-OLEDs.…”

Role of the Intramolecular‐Locking Strategy in the Construction of Organic Thermally Activated Delayed Fluorescence Emitters with Rotation‐Restricted Acceptors

“…Kido et al designed and synthesized two TADF emitters, PmTP-DMAC and MePmTP-DMAC, using the PM-2 derivate as an acceptor and 9,9-dimethyl-9,10-dihydroacridine as the donor. [100] PmTP-DMAC and MePmTP-DMAC exhibited sky blue emissions, with the emission peaks at a wavelength of ≈470 nm, high PLQYs of 88% and 84%, respectively, and a short-delayed lifetime (τ d ) of ≈7.7 µs. The sky-blue OLEDs based on these emitters showed high EQEs of 20.4% and 19.0%, respectively.…”