An organic electroluminescent device
An electroluminescent device, organic technology, applied in the direction of electric solid devices, electrical components, semiconductor devices, etc., can solve the problem of low light extraction efficiency, achieve high luminous efficiency, improve light extraction efficiency, weaken surface plasmon effect and waveguide effect Effect
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[0126] Synthesis Example 1: Preparation of Compound Ia-2
[0127]
[0128] Compound bis(4-biphenyl)amine (23.7g, 73.8mmol), p-bromoiodobenzene (20.8g, 73.8mmol), t-BuONa (10.7g, 111mmol), Pd(OAc) were added to the round-bottomed flask in sequence ) 2 (0.33g, 1.47mmol) and ultrasonically deoxygenated toluene (1.5L), refluxed overnight under nitrogen protection, treated with ethyl acetate and water after the reaction solution was cooled, and the resulting organic layer was treated with MgSO 4 After drying, the solvent was evaporated under reduced pressure. Using silica gel as the stationary phase and dichloromethane / hexane as the eluent, column chromatography was performed to obtain compound A1 (27.4 g, 78%).
[0129] Compound A1 (23.8 g, 50 mmol) was added to a round-bottomed flask, and then an appropriate amount of anhydrous THF was added to dissolve it. At -78 °C, n-BuLi (4.9 ml, 60 mmol) was added dropwise to the reaction flask. , after the reaction for 0.5h, rapidly ad...
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[0132] Synthesis Example 2: Preparation of Compound Ia-10
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[0134] In the preparation method of compound Ia-2 in Synthesis Example 1, bis(4-biphenyl)amine was replaced with equimolar compound C1, and other steps were the same to obtain compound Ia-10, (14.7 g, 77% ). Mass spectrum m / z: theoretical value: 635.81; found value: 635.23. Theoretical element content (%) C 49 H33 N: C, 92.57; H, 5.23; N, 2.20; Measured element content (%): C, 92.53; H, 5.29; N, 2.18. The above results confirmed that the obtained product was the target product.
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[0135] Synthesis Example 3: Preparation of Compound Ia-18
[0136]
[0137] In the preparation method of compound Ia-2 in Synthesis Example 1, bis(4-biphenyl)amine was replaced with equimolar compound C2, and other steps were the same to obtain compound Ia-18, (14.8 g, 82% ). Mass spectrum m / z: theoretical value: 601.79; found value: 601.22. Theoretical element content (%) C 46 H 35 N: C, 91.81; H, 5.86; N, 2.33; Measured element content (%): C, 91.79; H, 5.90; N, 2.31. The above results confirmed that the obtained product was the target product.
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