Compound containing xanthone and organic electroluminescent device containing same
A technology of xanthone and compound, which is applied in the field of organic electroluminescent devices, can solve the problems of high fluorescence quantum yield, insufficient development of TADF materials, lagging efficiency and lifetime development, etc., and achieve low attenuation coefficient, small The effect of spectrum change and channel increase
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preparation Embodiment 1
[0098]
[0099] 1) Add 0.01mol of raw material A1 and 0.012mol of raw material B1 to 120mL of toluene:ethanol=2:1 (volume ratio) mixed solvent, add 0.02mol of sodium carbonate aqueous solution 10mL, under nitrogen protection, add 0.0005 mol Pd(PPh 3 ) 4 , heated to 110°C and reacted for 12 hours, took a sample and spotted the plate, after the raw material A1 was completely reacted, cooled and filtered, the filtrate was rotary evaporated to remove the solvent, and the crude product was passed through a silica gel column to obtain intermediate C1; HPLC purity 99.25%, yield 85.3 %;
preparation Embodiment 2
[0101]
[0102]
[0103] 1) Under the protection of nitrogen, 0.01 mol of raw material S1, 1.2 mol of NaCN, 0.0005 mol of Sm (samarium) powder, 2 mol of KOH and 80 mL of DMSO were added. The mixture was further stirred at 110°C for 12 hours. Sampling and pointing plate showed that there was no remaining raw material S1, and the reaction was complete; naturally cooled to room temperature, filtered, added 100mL ethyl acetate and 100ml water to the filtrate, put it into a separatory funnel, stood still, and separated liquids. The organic phase was washed three times with saturated aqueous sodium chloride solution, the organic phase was taken, and anhydrous MgSO 4 Remove water. After filtration, the filtrate was rotary evaporated under reduced pressure, and purified by a neutral silica gel column to obtain intermediate B2. HPLC purity 98.37%, yield 73.7%;
[0104] 2) Add 0.01mol of raw material A1 and 0.012mol of intermediate B2 to 120mL of toluene:ethanol=2:1 (volume rat...
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