High-luminescence-efficiency boron-containing organic electroluminescence compound and application thereof
An electroluminescent device and compound technology, applied in the field of semiconductors, can solve the problems of disparity, low internal quantum efficiency, low external quantum efficiency, etc., and achieve the effects of improving device efficiency, device life, and color purity.
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Embodiment 1
[0054] Example 1 (Compound 01)
[0055]
[0056] The concrete synthetic route of this compound is provided now:
[0057]
[0058] 250ml four-necked bottle, under nitrogen protection, add 0.01mol intermediate A, 0.025mol phenylboronic acid, 0.05g pd (pph 3 ) 4 (tetraphenyltriphenylphosphine palladium), 60ml each of toluene, ethanol, and water, heated and refluxed for 20 hours, and the reaction was complete; naturally cooled, filtered, and the filtrate was rotary evaporated, and passed through a silica gel column, with toluene:ethanol=2:1 (volume ratio ) mixed solvent for beating, and a white solid was obtained after recrystallization, the purity (HPLC) was 97.8%, and the yield was 66.6%.
[0059] Elemental analysis structure (molecular formula C 39 h 35 B): theoretical value C, 91.04; H, 6.86; N, 2.10;
[0060] Test values: C, 90.92; H, 6.95; N, 2.13.
Embodiment 2
[0061] Example 2 (Compound 08)
[0062]
[0063] The concrete synthetic route of this compound is provided now:
[0064]
[0065] 250ml four-neck flask, under nitrogen protection, add 0.01mol intermediate A, 0.025mol dibenzofuran-4-boronic acid, 0.05g pd (pph 3 ) 4 (tetraphenyltriphenylphosphine palladium), 60ml each of toluene, ethanol, and water, heated and refluxed for 20 hours, and the reaction was complete; naturally cooled, filtered, and the filtrate was rotary evaporated, and passed through a silica gel column, with toluene:ethanol=2:1 (volume ratio ) mixed solvent for beating, and recrystallized to obtain a white solid with a purity (HPLC) of 98.3% and a yield of 64.6%.
[0066] Elemental analysis structure (molecular formula C 51 h 39 BO 2 ): Theoretical value C,88.18; H,5.66; B,1.56; O,4.61 Test value: C,88.25H,5.53; B,1.49; O,4.73
Embodiment 3
[0067] Example 3 (compound 10)
[0068]
[0069] The concrete synthetic route of this compound is provided now:
[0070]
[0071] In a 250ml four-neck flask, under nitrogen protection, add 0.01mol of intermediate A, 0.025mol of bis(3,4-dimethylphenyl)amine, 0.03mol of sodium tert-butoxide, 1×10 -4 mol Pd 2 (dba) 3 , 1×10 -4 mol tri-tert-butylphosphine, 200ml toluene, heated to reflux for 20 hours, the reaction was complete; naturally cooled, filtered, the filtrate was rotary evaporated, passed through a silica gel column, beaten with a mixed solvent of toluene:ethanol=3:1 (volume ratio), and recrystallized A white solid was obtained with a purity (HPLC) of 97.6% and a yield of 64.5%.
[0072] Elemental analysis structure (molecular formula C 59 h 61 BN 2 ): Theoretical value C,87.60; H,7.60; N,3.46; B,1.34 Test value: C,87.54; H,7.54; N,3.61; B,1.31
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