Green phosphorescent host material with excellent performance and organic electroluminescent device
A technology of green phosphorescence and host materials, applied in the direction of luminescent materials, electric solid-state devices, semiconductor devices, etc., can solve the problems of late start and achieve the effects of lower driving voltage, good thermal stability, and improved thermal stability
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Embodiment 1
[0047]
[0048] The preparation method of the green phosphorescent host material (1) with excellent performance is as follows:
[0049] (1)
[0050]
[0051] Compound 1-a (2-bromo-5'H-spiro[fluorene-9,9'-indeno[1',2':4,5]furo[2,3-c]carbazole]) (5g, 523g / mol, 9.56mmol), compound 1-b ((4,6-diphenyl-1,3,5-triazin-2-yl) boronic acid) (1eq, 2.65g, 277g / mol, 9.56mmol) and sodium carbonate (2eq, 2.03g, 105.99g / mol, 19.12mmol) was added in ethylene glycol diamine ether (100g, 20 times the quality of compound 1-a) and water (100g, 20 times the quality of compound 1-a), After stirring and mixing, tri(o-tolyl)phosphine (3%eq, 0.087g, 304.37g / mol, 0.29mmol) and palladium(II) acetate (0.5%eq, 0.011g, 224.51g / mol, 0.048 mmol), after heating up to reflux for 15 hours, the organic phase was separated, washed with water, concentrated under reduced pressure, and then obtained compound 1-c (2-(4,6-diphenyl-1,3,5-triazin -2-yl)-5'H-spiro[fluorene-9,9'-indeno[1',2':4,5]furo[2,3-c]carbazo...
Embodiment 2
[0056]
[0057] The preparation method of the green phosphorescent host material (2) with excellent performance is as follows:
[0058] (1)
[0059]
[0060] Compound 2-a (2-bromo-5'H-spiro[fluorene-9,9'-indeno[1',2':4,5]furo[2,3-c]carbazole]) (5g, 523.06 g / mol, 9.56mmol), compound 2-b ((4-([1,1'-biphenyl]-4-yl)-6-phenyl-1,3,5-triazin-2-yl)boronic acid) (1eq, 3.38g, 353.13g / mol, 9.56mmol) and sodium carbonate (2eq, 2.03g, 105.99g / mol, 19.12mmol) were added to ethylene glycol diamine ether (100g, 20 times the mass of compound 2-a ) and water (100g, 20 times the mass of compound 2-a), stir and mix and then add three (o-tolyl) phosphine (3%eq, 0.087g, 304.37g / mol, 0.29mmol) and palladium acetate (II) (0.5%eq, 0.011g, 224.51g / mol, 0.048mmol), after heating up to reflux for 15h, the organic phase was separated, washed with water, concentrated under reduced pressure, and then obtained compound 2-c after column chromatography (2-(4-([1,1'-biphenyl]-4-yl)-6-phenyl-1,3,5-triaz...
Embodiment 3
[0065]
[0066] The preparation method of the green phosphorescent host material (11) with excellent performance is as follows:
[0067] (1)
[0068]
[0069] Compound 3-a (3-bromo-5'H-spiro[fluorene-9,9'-indeno[1',2':4,5]furo[2,3-c]carbazole]) (5g, 523.06 g / mol, 9.56mmol), compound 3-b ((4,6-diphenyl-1,3,5-triazin-2-yl)boronic acid) (1eq, 2.65g, 277.10g / mol, 9.56mmol) and Sodium carbonate (2eq, 2.03g, 105.99g / mol, 19.12mmol) was added to ethylene glycol diamine ether (100g, 20 times the mass of compound 3-a) and water (100g, 20 times the mass of compound 3-a) , stir and mix and then add three (o-tolyl) phosphine (3%eq, 0.087g, 304.37g / mol, 0.29mmol) and palladium (II) acetate (0.5%eq, 0.011g, 224.51g / mol , 0.048mmol), after heating up to reflux for 15h, the organic phase was separated, washed with water, concentrated under reduced pressure, and then obtained compound 3-c (3-(4,6-diphenyl-1,3,5 -triazin-2-yl)-5'H-spiro[fluorene-9,9'-indeno[1',2':4,5]furo[2,3-c]carbazo...
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