Bipolar host organic electroluminescent material and application thereof
An electroluminescent material, bipolar technology, applied in luminescent materials, organic chemistry, circuits, etc., can solve problems such as single carrier transport properties, spectral instability, unbalanced OLED turn-on voltage and lifespan
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Embodiment 1
[0067] The preparation of embodiment 1 compound C15
[0068]
[0069] Add intermediate M (4.07g, 0.01mol), 2-(4-bromophenyl)-4,6-diphenyl-1,3,5-triazine (4.66g, 0.012mol) to a 250ml three-necked flask successively ), o-xylene (100mL), catalyst Pd(OAc) 2 (45mg, 0.0002mol), tri-tert-butylphosphine tetrafluoroborate (116mg, 0.0004 mol) and potassium tert-butoxide (2.24g, 0.02mol), stirred at 25°C for 10min, and the bath temperature was set at 145-150°C, Reflux and stir the reaction for 16.0 hrs under the protection of nitrogen, TLC monitors the complete reaction of the raw materials and then cools down to 25°C; removes most of the mechanical impurities and salt by suction filtration, washes the filtrate to neutrality, dried the organic phase with anhydrous sodium sulfate, and desolvated the organic phase to obtain Brown-yellow solid; use 1L tetrahydrofuran to heat-dissolve the filter cake and cool it down to room temperature, remove all mechanical impurities by direct column ...
Embodiment 2
[0070] The preparation of embodiment 2 compound C16
[0071]
[0072] Add intermediate N (4.33g, 0.01mol), 2-(4-bromophenyl)-4,6-diphenyl-1,3,5-triazine (4.66g, 0.012mol) to a 250ml three-necked flask successively ), o-xylene (100mL), catalyst Pd(OAc) 2 (45mg, 0.0002mol), tri-tert-butylphosphine tetrafluoroborate (116mg, 0.0004 mol) and potassium tert-butoxide (2.24g, 0.02mol), stirred at 25°C for 10min, and the bath temperature was set at 145-150°C, Reflux and stir the reaction for 16.0 hrs under the protection of nitrogen, TLC monitors the complete reaction of the raw materials and then cools down to 25°C; removes most of the mechanical impurities and salt by suction filtration, washes the filtrate to neutrality, dried the organic phase with anhydrous sodium sulfate, and desolvated the organic phase to obtain Brown-yellow solid; use 1L tetrahydrofuran to dissolve the filter cake and cool it down to room temperature, remove all mechanical impurities by direct column chrom...
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