Organic electroluminescent blue light main body material as well as preparation method thereof and organic electroluminescence device
A blue-light host material and organic technology, which is applied in the manufacture of electric solid-state devices, semiconductor devices, semiconductor/solid-state devices, etc., can solve problems such as the lack of organic electro-induced blue-light host materials, and achieve good carrier transport performance and good processability performance, high thermal stability
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Embodiment 1
[0037] This example provides a 9-(3-(9H-carbazol-9-yl)phenyl)-3-(4-dibenzofuran)-9H-carbazole (mCPDBF), whose chemical structure is as follows: (2) as shown:
[0038]
[0039] The preparation steps of above-mentioned mCPDBF are as follows:
[0040] S10, provide compound A (9-(3-(9H-carbazol-9-yl)phenyl)-3-bromo-9H-carbazole) represented by the following structural formula and compound B1 (4-dibenzofuran boronic acid) :
[0041]
[0042] S20, Suzuki coupling reaction to prepare mCPDBF
[0043] Add 4.0mmol of A, 5.0mmol of B1 and 0.4mmol of tetrakis(triphenylphosphine) palladium into the reaction flask, vacuumize and circulate nitrogen for 3 times, make the reaction system in an oxygen-free state, and add 55ml of tetrahydrofuran solution and 35ml of Na 2 CO 3 (2mol / L) aqueous solution, reflux at 75-80°C, and Suzuki coupling reaction for 24 hours to obtain a reaction solution containing mCPDBF;
[0044] Separation and purification of S30 and mCPDBF
[0045]The reacti...
Embodiment 2
[0049] This example provides a kind of 9-(3-(9H-carbazol-9-yl)phenyl)-3-(4-dibenzothiophene)-9H-carbazole (mCPDBT), its chemical structure is as follows: (3) as shown in:
[0050]
[0051] The preparation steps of above-mentioned mCPDBT are as follows:
[0052] S10, providing compound A (9-(3-(9H-carbazol-9-yl)phenyl)-3-bromo-9H-carbazole) represented by the following structural formula and compound B2 (4-dibenzothiophene boronic acid) :
[0053]
[0054] S20, Suzuki coupling reaction to prepare mCPDBT
[0055] Add 4.0mmol of A, 4.0mmol of B2 and 0.12mmol of tris(dibenzylideneacetone) dipalladium to the reaction flask, vacuumize and circulate nitrogen for 3 times to make the reaction system in an oxygen-free state, nitrogen protection Add 70ml of ethylene glycol dimethyl ether and 40ml of K 2 CO 3 (2mol / L) aqueous solution, reflux at 95°C, and Suzuki coupling reaction for 40 hours to prepare a reaction solution containing mCPDBT;
[0056] S30, separation and purifi...
Embodiment 3
[0061] This embodiment provides a 9-(3-(9H-carbazol-9-yl)phenyl)-3-(9,9-dimethyl-9H-fluoren-2 base)-9H-carbazole ( mCPMF), its chemical structure is shown in formula (4):
[0062]
[0063] The preparation steps of above-mentioned mCPMF are as follows:
[0064] S10, providing compound A (9-(3-(9H-carbazol-9-yl)phenyl)-3-bromo-9H-carbazole) represented by the following structural formula and compound B3 ((9,9-dimethyl -9H-fluoren-2yl)boronic acid):
[0065]
[0066] S20, Suzuki coupling reaction to prepare mCPMF
[0067] Add 4.0mmol of A, 8mmol of B3 and 0.004mmol of bis(triphenylphosphine)palladium dichloride into the reaction flask, vacuumize and circulate nitrogen for 3 times to make the reaction system in an oxygen-free state, nitrogen protection Add 60ml of toluene solution and 30ml of Cs 2 CO 3 (2mol / L) aqueous solution, reflux at 120°C, and Suzuki coupling reaction for 48 hours to prepare a reaction solution containing mCPMF;
[0068] Separation and purificati...
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