Ye, Shanghui; Wu, Congjin; Gu, Pengfei; Xiang, Tai; Zhang, Senyu; Jing, Tongtong; Wang, Shi; Yang, Xiaodi; Li, Yonghua; Huang, Wei published the artcile< A benzoindole-cored building block for deep blue fluorescent materials: synthesis, photophysical properties, and applications in organic light-emitting diodes>, Formula: C6H8N2, the main research area is benzoindole cored blue fluorescent material organic light emitting diode; LED organic benzoindole cored blue fluorescent material; electroluminescent device organic benzoindole cored blue fluorescent material.
Deep blue fluorescent materials are crucial in the commercialization of organic light-emitting diodes (OLEDs) for full-color displays or solid-state lighting sources. Aromatic ring compounds based on a newly designed 2-(pyridine-4-yl)-3-phenyl-1H-benzo[g]indole core, were synthesized, on which donor (D) and acceptor (A) groups are bonded in a Y-typed configuration, forming a D-π-A-π-D structure. The electronic structure and photophys. properties were explored, as well as the applications in the blue OLEDs. Multi-state couplings exist between the D-π-A-π-D 3 moieties, resulting in high luminescence quantum yield ≤76.1% peaking at ∼410 nm, and depressed efficiency roll-off at high luminance. The deep blue OLEDs based on CzCNBPyIp emitter exhibits stable emission peaking at 416 nm with negligible efficiency roll-off at high luminance range of 1,000-10,000 cd m-2, and corresponding CIEx,y = (0.162, 0.085) and maximum EQE = 2.6%, making it among the highest performance solution processed deep blue fluorescent devices. This work provides an alternative method for the deep blue fluorescent materials design toward solution processing OLEDs.
Journal of Materials Chemistry C: Materials for Optical and Electronic Devices published new progress about Electron acceptors. 3731-53-1 belongs to class pyridine-derivatives, and the molecular formula is C6H8N2, Formula: C6H8N2.