Compound and application thereof, and organic electroluminescent device containing compound
A compound and independent technology, applied in the field of organic electroluminescent devices, can solve the problems of large energy level difference between singlet state and triplet state, deep unoccupied orbital energy level, slow crossing between inverse systems, etc., to reduce quenching , the effect of reducing the non-radiative transition and reducing the efficiency roll-off
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preparation example 1
[0103] Synthesis of Compound M1:
[0104]
[0105] (1) Preparation of Compound M1-1:
[0106] At room temperature, 1,3-dibromo-5 (isopropyl-2-D) benzene (27.7 g, 100 mmol), diphenylamine (41.7 g, 250 mmol), tris (di苄yl-Base acetone) dual palladium PD 2 (DBA) 3 (0.92 g, 1 mmol), 2-dicyclohexylphosphine-2,6-dimethoxybiphenyl (S-PhOS) (0.82 g, 2 mmol), tert-butoxide (24 g, 250 mmol), xylene ( 500ml) Add to 1L single-mouth bottle, nitrogen replacement three times, heating to 130 ° C to react overnight. The reaction liquid decreased to room temperature, extracted with ethyl acetate, washed with a large amount of water, and concentrated in the organic phase to concentrate (PE: DCM = 25: 1) to obtain 38 g of crude material, and n-hexane hexane was boiled and washed. 36.4 g of white solid, yield 79.9%. Molecular ion mass determined by mass spectrometry: 455.28 (Theoretical value: 455.25).
[0107] (2) Preparation of Compound M1
[0108] M1-1 (4.6 g, 10 mmol) was added to 250 ml of three...
preparation example 2
[0110] The difference from Preparation Example 1 is only to replace dipheniline to the same molar amount of two (4- (meth-D3)) aniline to obtain product M3. Molecular Ion Quality Determined by Mass Spectrometry: 531.35 (Theoretical Value: 531.37).
preparation example 3
[0112] Product M11.
[0113] The difference from the preparation example 1 is only to replace dipheniline to the equomolar amount of dijeiine to give the product M11. Molecular ion mass of mass spectrometry: 767.35 (Theoretical value: 767.36).
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