Organic material and application thereof

An organic material, electromechanical technology, applied in the field of organic electroluminescence display, to achieve the effects of high film formation stability, good carrier mobility, and high thermal stability

Pending Publication Date: 2021-06-15
北京燕化集联光电技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lifetime of the excited state of phosphorescent materials is long, and triplet-triplet annihilation and triplet-polaron inter-annihilation are easy to form when the triplet exciton concentration is high.

Method used

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  • Organic material and application thereof
  • Organic material and application thereof
  • Organic material and application thereof

Examples

Experimental program
Comparison scheme
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preparation example Construction

[0032] According to the preparation method provided by the present invention, those skilled in the art can use known common means to realize, such as further selecting suitable catalysts, solvents, determining suitable reaction temperature, time, material ratio, etc., the present invention is not particularly limited to this . Unless otherwise specified, the solvents, catalysts, bases and other raw materials used in the preparation process can be synthesized through open commercial channels or methods known in the art.

[0033] Synthesis of Intermediates M1~M16

[0034] Synthesis of Intermediates M1 and M2

[0035]

[0036] The synthetic route is as follows:

[0037]

[0038] The specific operation steps are:

[0039] (1) Add dichloromethane (200mL) and aluminum trichloride (29.3g, 0.22mol) to a 2L three-necked flask equipped with mechanical stirring, start stirring, and add 4-bromophthalic anhydride (22.6g, 0.1mol) in dichloromethane (150mL), stirred at room tempera...

Embodiment 1

[0086] The synthesis of embodiment 1 compound 1-3

[0087]

[0088] The synthetic route is as follows:

[0089]

[0090] A 2L three-neck flask equipped with a magnetic stirrer was added in sequence with sodium tert-butoxide (28.8 g, 0.3 mol), N-phenylnaphthalene-2-amine (21.9 g, 0.1 mol) and 400 ml of toluene after nitrogen replacement. After nitrogen replacement again, (0.4 g, 2 mmol) tri-tert-butylphosphine and (0.92 g, 1 mmol) tribenzylideneacetone dipalladium were added in sequence. After the addition was complete, the temperature was raised to 85°C. Start to drop a solution consisting of (49.0 g, 0.1 mol) M1 and 100 ml of toluene, heat to reflux (110-120° C.) for 4 hours, and the reaction ends. Adjust to neutral, separate the organic phase, extract, dry, perform column chromatography, and spin dry the solvent to obtain 54.1 g of light yellow solid I-3 with a yield of about 86%.

[0091] Product MS (m / e): 629.17; Elemental analysis (C 41 h 27 NO 4 S): theoretic...

Embodiment 2

[0092] The synthesis of embodiment 2 compound 1-4

[0093]

[0094] The synthetic route is as follows:

[0095]

[0096] Replace M1 with M2, N-phenylnaphthalene-1-amine instead of N-phenylnaphthalene-2-amine, select a suitable material ratio, other raw materials and steps are the same as the synthesis method of Example 1, and obtain 57.3g light yellow Solid I-4, yield about 82%.

[0097] Product MS (m / e): 629.17; Elemental analysis (C 41 h 27 NO 4 S): theoretical value C: 78.20%, H: 4.32%, N: 2.22%; measured value C: 78.26%, H: 4.39%, N: 2.03%.

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Abstract

The invention belongs to the technical field of organic electroluminescence display, and particularly relates to an organic material and application thereof. The organic material has a structural formula shown as a formula (I), can be used as a luminescent layer main body material, has a high triplet state energy level, has good carrier mobility, can be matched with an adjacent energy level, has high thermal stability and film-forming stability, can be well applied to OLED devices, and shows low driving voltage and high luminous efficiency.

Description

technical field [0001] The invention belongs to the technical field of organic electroluminescence display, and in particular relates to an organic material and its application. Background technique [0002] The application of organic electroluminescent (OLED) materials in information display materials, organic optoelectronic materials and other fields has great research value and bright application prospects. With the development of multimedia information technology, the performance requirements of flat panel display devices are getting higher and higher. At present, the main display technologies include plasma display devices, field emission display devices and organic electroluminescent display devices (OLED). Among them, OLED has a series of advantages such as self-luminescence, low-voltage DC drive, full curing, wide viewing angle, and rich colors. Compared with liquid crystal display devices, OLED does not require a backlight, has a wider viewing angle, and lower powe...

Claims

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Application Information

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IPC IPC(8): C07D333/78C07D409/12C07D413/14C07D417/14C07D417/10C09K11/06H01L51/50H01L51/54
CPCC07D333/78C07D409/12C07D413/14C07D417/14C07D417/10C09K11/06C09K2211/1011C09K2211/1014C09K2211/1022C09K2211/1029C09K2211/1033C09K2211/1037C09K2211/1044C09K2211/1088C09K2211/1092H10K85/615H10K85/622H10K85/624H10K85/631H10K85/626H10K85/636H10K85/633H10K85/657H10K85/6572H10K85/6574H10K85/6576H10K50/11
Inventor 梁现丽陈婷温洁段陆萌杭德余曹占广班全志
Owner 北京燕化集联光电技术有限公司
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