Ultrapure green organic light-emitting diodes based on highly distorted fused π-conjugated molecular design

Multi-spiro junctions enable efficient thermally activated delayed fluorescent emitter

“…[5][6][7] Recently, multi-resonance (MR) emitters featuring narrowband emission have emerged as promising candidates for high-resolution displays. [8][9][10][11][12][13][14] TADF compounds could also serve as sensitizers for MR emitters to further improve the EQE to over 40% while extending the device lifetime. 3,4 Spiro-acridines (SAs) have gained significant popularity in constructing donor-acceptor (D-A) type TADF emitters.…”

Recent progress and prospects of fluorescent materials based on narrow emission

“…Different from the above strategies, Zhang and co-workers proposed a new molecular design strategy to fuse two MR cores by π-conjugation into an MR-TADF emitter ( DBTN-2 ) with a highly distorted structure. 72 As shown in Fig. 6o, DBTN-2 is the concept-design molecule.…”

Precise modulation of multiple resonance emitters toward efficient electroluminescence with pure-red gamut for high-definition displays

“…Recently, the multiple resonance (MR) effect has garnered considerable attention for producing highly efficient narrowband organic emitters (14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30). The molecular design approach involves the integration of mutually ortho-positioned electron-deficient boron-and electron-rich nitrogen atoms into the polycyclic aromatic hydrocarbon motif.…”