A sulfur-containing organic electrophosphorescent light-emitting material and its application
A phosphorescent light-emitting material and technology of light-emitting materials, applied in the field of organic electroluminescence display, can solve the problems of low phosphorescence efficiency, hinder commercialization, poor stability and lifespan, etc., to improve phosphorescence quantum efficiency, reduce power consumption and lifespan prolonged effect
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Embodiment 1
[0057] Example 1: Synthesis of Ligand P1
[0058]
[0059] The synthetic route is as follows:
[0060]
[0061] The specific experimental steps are:
[0062] (1) in the 2L there-necked flask equipped with mechanical stirring, add 2-fluoronitrobenzene (14.1g, 0.1mol), 2-bromoaniline (25.7g, 0.15mol), stir, argon protection, be warming up to 180 ℃, keep the reaction for more than 30 hours, during the reaction, the color gradually becomes red, and finally gradually becomes dark red. After the reaction, the organic phase was separated, extracted, dried, subjected to column chromatography, and the solvent was spin-dried to obtain 24.8 g of orange-red solid M1 with a yield of 85%.
[0063] (2) In a 1L three-necked flask equipped with mechanical stirring, add M1 (29.2g, 0.1mol), sodium sulfide nonahydrate (96g, 0.4mol), ethanol (200mL), water (100mL), nitrogen protection, heat to The reaction was refluxed for 3 hours, and the reaction was terminated. The organic phase was s...
Embodiment 2
[0070] Example 2: Synthesis of Ligand P2
[0071]
[0072] With reference to the synthesis steps of Example 1, only in step (3), 2-bromo-4-methylbenzoyl chloride is used instead of o-bromobenzoyl chloride, and other raw materials and steps are the same as those in Example 1 to obtain ligand P2.
[0073] Product MS (m / e): 346; elemental analysis (C 20 H 14 N 2 SO 2 ): theoretical value C: 69.36%, H: 4.05%, N: 8.09%; measured value C: 69.12%, H: 4.78%, N: 8.52%.
Embodiment 3
[0074] Example 3: Synthesis of Ligand P3
[0075]
[0076] Referring to the synthesis steps of Example 1, except that 2-bromo-4-methylaniline is used instead of 2-bromoaniline in step (1), other raw materials and steps are the same as those in Example 1, to obtain ligand P3.
[0077] Product MS (m / e): 346; elemental analysis (C 20 H 14 N 2 SO 2 ): theoretical value C: 69.36%, H: 4.05%, N: 8.09%; measured value C: 69.45%, H: 4.37%, N: 8.46%.
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