A kind of organic orange light small molecule based on phenanthroimidazole, its preparation method and its application in electroluminescent devices
An electroluminescent device, phenanthroimidazole technology, applied in the application and preparation of phenanthroimidazole-based organic orange small molecules, electroluminescent devices, can solve the problems of high driving voltage and too thick light-emitting layer
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[0060] The preparation of the present embodiment PIDSB comprises the following preparation steps:
[0061] Synthesis of PICHO: PICHO was prepared by a one-pot method. In a 250mL round bottom flask, 9,10-phenanthrenequinone (20mmol, 4.16g), terephthalaldehyde (20mmol, 2.68g), aniline (100mmol, 9.5mL), ammonium acetate (80mmol, 6.16g) were dissolved in In 150mL of glacial acetic acid, stirred and refluxed at 120°C for 4 hours under nitrogen protection. After the reaction was completed, the reaction system was poured into 100 mL of ice water, and a large amount of precipitates appeared instantly. After suction filtration, the resulting solid was separated and purified by column chromatography (petroleum ether:dichloromethane=1:2, volume ratio) to obtain a white solid (5.7 g, yield: 72%). Mass Spectrum MALDI-TOF(m / z)[M + ]: The test value is 398.34, and the theoretical value is 398.47.
[0062]
[0063] Synthesis of PIDSB: PIDSB was prepared by a knotevenagel condensation r...
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