A Novel Organic Electroluminescent Material and Its Application
An electroluminescent material and luminescent technology, applied in the field of photoelectrochemistry, can solve problems affecting the development of organic electroluminescent devices, and achieve the effects of good film stability, good efficiency, and large steric hindrance
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Embodiment 1
[0038] Example 1 Preparation of Compound 2
[0039]
[0040] Preparation of compound 1: In a 2L three-necked flask equipped with a constant pressure dropping funnel, add magnesium metal (5.1g, 0.21mol), and dissolve 4-(2-bromophenyl)pyridine (46.8g, 0.2mol) in 300g of tetrahydrofuran, placed in a constant pressure dropping funnel, protected with nitrogen, heated the three-necked flask until the temperature in the bottle reached 65℃, and added 4-(2-bromophenyl)pyridine in tetrahydrofuran solution through the constant pressure dropping funnel. First Add 60 mL of 4-(2-bromophenyl) pyridine in tetrahydrofuran at a time. After the reaction is initiated, slowly drip the remaining part. After 1.5 hours, the addition is completed, and the reaction is performed at reflux temperature for 1 hour. Dissolve 3,7-dibromo-dibenzocyclohepten-5-one (72.8g, 0.2mol) in 400g tetrahydrofuran, then slowly pour into the above three-necked flask, and react for 3h at reflux temperature. After the reaction...
Embodiment 2
[0043] Example 2 Preparation of Compound C01
[0044]
[0045] In a 250mL three-necked flask, add compound 2 prepared in Example 1 (5.0g, 10mmol), phenylboronic acid (2.68g, 22mmol), potassium carbonate (4.15g, 30mmol), Pd (PPh 3 ) 4 (58mg, 0.05mmol), mixed xylene (80mL), N 2 Protect, heat to reflux, keep the reaction for 5 hours, stop the reaction, cool to 25°C, add 50 mL of deionized water, stir for 5 minutes, separate the liquids, collect the organic phase, and remove the solvent to obtain the target C01 crude product, using silica gel column layer After purification, the eluent is petroleum ether: dichloromethane=3:1 (V / V) to obtain the crude product of the target, and dichloroethane is used as a solvent to recrystallize to obtain the target C01, 4.2g of off-white solid, use The chemical vapor deposition system was further purified by sublimation at a sublimation temperature of 345° C. to obtain 3.8 g of compound C01 with a yield of 76.7%.
[0046] High resolution mass spectrom...
Embodiment 3
[0047] Example 3 Preparation of compound CO2
[0048]
[0049] In a 250mL three-neck flask, add compound 2 prepared in Example 1 (5.0g, 10mmol), 1-naphthaleneboronic acid (3.78g, 22mmol), potassium carbonate (4.15g, 30mmol), Pd(PPh 3 ) 4 (58mg, 0.05mmol), mixed xylene (80mL), N 2 Protect, heat to reflux, keep the reaction for 6 hours, stop the reaction, cool to 25°C, add 50mL deionized water, stir for 5min, separate the liquids, collect the organic phase, and remove the solvent to obtain the target CO2 crude product, using silica gel column layer Analyze and purify, the eluent is petroleum ether: dichloromethane=3:1 (V / V), to obtain the crude product of the target, use dichloroethane as the solvent to recrystallize, to obtain the target CO2, a white solid 5.0g, use The chemical vapor deposition system was further purified by sublimation, and the sublimation temperature was 350° C. to obtain 4.1 g of compound CO 2 with a yield of 68.8%.
[0050] High resolution mass spectrometry, ES...
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