Organic semiconductor material, preparation method thereof and electroluminescent device
A technology of electroluminescent devices and organic semiconductors, applied in the fields of preparation, organic semiconductor materials, and electroluminescent devices, can solve problems such as shortages, achieve high thermal stability, improve luminous efficiency, and the effect of simple and easy synthesis methods
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[0025] The invention provides a kind of preparation method of organic semiconductor material, comprises the steps:
[0026] Provides compound A: and compound B: Under an inert atmosphere, compound A is first dissolved in an organic solvent, and then compound B, an inorganic base and a catalyst are added to the organic solvent containing compound A and reacted at 70-120° C. for 6-15 hours. The molar ratio of compound A to compound B is 1:2 to 1:2.4, and the chemical formula of the organic semiconductor material obtained by stopping the reaction is as follows:
[0027]
[0028] In a specific implementation, the preparation method of the organic semiconductor material further includes a post-processing step, and the post-processing step is specifically: the organic semiconductor material obtained by stopping the reaction is separated and purified through a silica gel layer using n-hexane as an eluent, and vacuum-dried The target product is obtained.
[0029] In a specific...
Embodiment 1
[0040] The preparation process of 4,4'-(9H,9'H-3,3'-dicarbazole-9,9'-diyl)bis(N,N-diphenylamine) is as follows:
[0041]
[0042] Under nitrogen protection, 9H,9'H-3,3'-dicarbazole (26.6g, 80mmol) was dissolved in 200mL N,N-dimethylformamide (DMF) solution, and then 4-bromo- N,N-Diphenylaniline (51.8g, 160mmol), potassium carbonate (22.1g, 160mmol) and cuprous iodide (1.52g, 8mmol). The reactants were stirred and reacted at 120° C. for 6 hours. Stop the reaction and cool to room temperature, filter, and wash the solid three times with distilled water to obtain the product 4,4'-(9H,9'H-3,3'-dicarbazole-9,9'-diyl)bis(N,N -diphenylamine), and then separated by silica gel column chromatography using eluent n-hexane, and then dried under vacuum at 50°C for 24h to obtain off-white solid. The yield was 87%.
[0043] Experimental test data: mass spectrum: m / z818.3 (M + +1); elemental analysis (%) C 60 h 42 N 4 : Theoretical value: C87.99, H5.17, N6.84; Measured value: C88.05...
Embodiment 2
[0047] The preparation process of 4,4'-(9H,9'H-3,3'-dicarbazole-9,9'-diyl)bis(N,N-diphenylamine) is as follows:
[0048]
[0049] Under nitrogen protection, 9H,9'H-3,3'-dicarbazole (26.6g, 80mmol) was dissolved in 200mL of toluene (Tol) solution, and then 4-bromo-N,N-diphenylaniline was added (56.8g, 176mmol), cesium carbonate (57.2g, 176mmol), copper powder (0.768g, 12mmol). The reactants were stirred and reacted at 110° C. for 9 hours. Stop the reaction and cool to room temperature, filter, and wash the solid three times with distilled water to obtain the product 4,4'-(9H,9'H-3,3'-dicarbazole-9,9'-diyl)bis(N,N -diphenylamine), and then separated by silica gel column chromatography using eluent n-hexane, and then dried under vacuum at 50°C for 24h to obtain off-white solid. The yield was 90%.
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