Bipolar blue phosphorescent host material as well as preparation method and application thereof
A technology of phosphorescent main body and main material, which is applied in the direction of luminescent materials, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc., which can solve problems such as shortage, and achieve reduced manufacturing costs, cheap and easy-to-obtain raw materials, and good thermal stability Effect
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Embodiment 1
[0026] Embodiment 1: The bipolar blue phosphorescent host material of this embodiment, namely 9-(10-(3-(1-phenyl-1H-benzo[d]imidazol-2-yl)phenyl)anthracene-9 -Radical)-9H-carbazole, the preparation steps are as follows:
[0027]
[0028] Under the protection of argon, 9-(10-pinacol borate anthracene-9-yl)-9H-carbazole (93.8mg, 0.2mmol), 2-(3-bromophenyl)-1-phenyl -1H-Benzo[d]imidazole (69.8mg, 0.2mmol) was added to the flask containing 10ml of toluene solvent, and after fully dissolved, potassium carbonate (2mL, 2mol / L) solution was added to the flask, vacuumed to remove oxygen and Fill with argon, then add bistriphenylphosphine dichloride palladium (5.6mg, 0.008mmol); heat the flask to 120°C for Suzuki coupling reaction for 24h. Stop the reaction and cool to room temperature. After extracting with dichloromethane several times, combine the organic phases, then dry the organic phases with anhydrous magnesium sulfate and spin-dry to obtain a crude product. The crude product uses ...
Embodiment 2
[0030] Embodiment 2: The bipolar blue phosphorescent host material of this embodiment, namely 9-(10-(3-(1-phenyl-1H-benzo[d]imidazol-2-yl)phenyl)anthracene-9 -Radical)-9H-carbazole, the preparation steps are as follows:
[0031]
[0032] Under the protection of a mixture of nitrogen and argon, 9-(10-pinacol borate anthracene-9-yl)-9H-carbazole (141mg, 0.3mmol), 2-(3-bromophenyl)-1 -Phenyl-1H-benzo[d]imidazole (115mg, 0.33mmol) and 15mL of tetrahydrofuran were added to a 50mL two-necked flask. After fully dissolved, a mixture of nitrogen and argon was introduced to exhaust the air for about 20 minutes, and then the four Triphenylphosphine palladium (4mg, 0.003mmol) was added to it, and after it was fully dissolved, sodium bicarbonate (3mL, 2mol / L) solution was added. After fully ventilating the mixed gas of nitrogen and argon for about 10 minutes, the two-neck flask was added to 70 ℃ for Suzuki coupling reaction for 48 hours. Stop the reaction and cool to room temperature. After...
Embodiment 3
[0033] Embodiment 3: The bipolar blue phosphorescent host material of this embodiment, namely 9-(10-(3-(1-phenyl-1H-benzo[d]imidazol-2-yl)phenyl)anthracene-9 -Radical)-9H-carbazole, the preparation steps are as follows:
[0034]
[0035] Under the protection of nitrogen, add 9-(10-pinacol borate anthracene-9-yl)-9H-carbazole (141mg, 0.3mmol), 2-(3-bromophenyl)-1-phenyl-1H -Benzo[d]imidazole (125mg, 0.36mmol), palladium acetate (3.5mg, 0.015mmol) and tris (o-methoxyphenyl) phosphine (21mg, 0.06mmol) were added to 12mL of N, N- Add potassium carbonate (3mL, 2mol / L) solution to the dimethylformamide flask after fully dissolving, and then purge the flask with nitrogen gas for about 30min; heat the flask to 130°C for Suzuki coupling reaction for 12h. Stop the reaction and cool to room temperature. After extracting with dichloromethane several times, combine the organic phases, then dry the organic phases with anhydrous magnesium sulfate and spin-dry to obtain a crude product. The cru...
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