Organic electroluminescent material and preparation method thereof
An electroluminescent material and luminescent technology, applied in the direction of luminescent materials, organic chemistry, chemical instruments and methods, etc., can solve the problems that the luminous efficiency of luminescent materials cannot meet the requirements of OLEDs, etc., and achieve the improvement of luminous efficiency, simple synthesis and purification , the effect of high purity
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Embodiment 1
[0027] Example 1: Synthesis of compound 001
[0028] The specific synthesis route is as follows:
[0029]
[0030] Weigh 21.72g of 7H-benzoacridine, 42.47g of 2-bromopyrene, 13.46g of potassium tert-butoxide, 0.41g of palladium (II) acetate, 0.45g of tri-tert-butylphosphorus, and dissolve with 250ml of toluene, and under nitrogen protection , React at 80°C for 10 hours. The reaction solution was filtered, the obtained crude product was purified by silica gel chromatography, and the obtained solid was recrystallized with toluene and dried to obtain 35.48 g of yellow-white solid compound 001 with a yield of over 85% and an HPLC purity of over 98%. Mass spectrum: calculated value is 417.50; test value is 417.52. Elemental analysis: calculated value is C: 92.06%; H: 4.59%; N: 3.35%; test value is C: 92.07%; H: 4.60%; N: 3.33%.
Embodiment 2
[0031] Example 2: Synthesis of Compound 002
[0032] The specific synthesis route is as follows:
[0033]
[0034] Weigh 21.72g of 7H-benzoacridine, 51.87g of 4-bromotriphenylamine, 14.36g of potassium tert-butoxide, 0.48g of palladium (II) acetate, and 0.54g of tri-tert-butylphosphorus, and dissolve it with 250ml of toluene, at 82°C React for 11 hours. The reaction solution was filtered, the crude product obtained was purified by silica gel chromatography, and the obtained solid was recrystallized with toluene and dried to obtain 39.15 g of yellow-white solid compound 002 with a yield of over 85% and an HPLC purity of over 98%. Mass spectrum: calculated value is 460.57; test value is 460.56. Elemental analysis: calculated value is C: 88.67%; H: 5.25%; N: 6.08%; test value is C: 88.69%; H: 5.24%; N: 6.07%.
Embodiment 3
[0035] Example 3: Synthesis of Compound 003
[0036] The specific synthesis route is as follows:
[0037]
[0038] Weigh 21.72g of 7H-benzoacridine, 43.71g of 2-bromoanthracene, 15.26g of potassium tert-butoxide, 0.56g of palladium(II) acetate, 0.63g of tri-tert-butylphosphorus, dissolve it with 250ml of toluene, and react at 84℃ 12 hours. The reaction solution was filtered, the obtained crude product was purified by silica gel chromatography, and the obtained solid was recrystallized with toluene and dried to obtain 33.84 g of yellow-white solid compound 003 with a yield of over 86% and an HPLC purity of over 98%. Mass spectrum: calculated value is 397.51; tested value is 397.52. Elemental analysis: calculated value is C: 90.64%; H: 5.83%; N: 3.52%; test value is C: 90.62%; H: 5.84%; N: 3.53%.
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