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A benzoxazolylquinoline-based Cun2p2 orange phosphorescent material

A benzoxazolyl quinoline, phosphorescent material technology, applied in the field of luminescent materials and organic electroluminescent materials, can solve the problems affecting the popularization, application and market performance of OLEDs, the luminous intensity cannot meet the application requirements, and the cost is high. The effect of good phosphorescence emission performance, good solubility and thermal stability, and low production cost

Inactive Publication Date: 2017-02-15
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To analyze more specifically, the orange phosphorescent materials currently on sale for OLED are complexes of noble metals such as iridium and platinum. Although they have performed well in performance, their high price also affects the quality of OLED final products. Promote application and market performance
The use of Cu(I) complexes as orange phosphorescent materials has a long history (N.Armaroli, G.Accorsi, F.Cardinali, A.Listorti, Top.Curr.Chem.2007, 280, 69-115.), this A cheap Cu(I) complex luminescent material can be easily prepared from Cu(I) ions and suitable organic ligands, but its luminous intensity cannot meet the application requirements in the OLED operating temperature range.

Method used

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  • A benzoxazolylquinoline-based Cun2p2 orange phosphorescent material
  • A benzoxazolylquinoline-based Cun2p2 orange phosphorescent material
  • A benzoxazolylquinoline-based Cun2p2 orange phosphorescent material

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Experimental program
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Effect test

Embodiment 1

[0031] A large number of Cu(I) complexes [Cu(2-QBO)(Xantphos)]PF 6 Microcrystalline sample preparation: weigh 0.1mmol (37.3mg) of [Cu(CH 3 EN) 4 ]PF 6 Dissolve in 5mL CH 2 Cl 2 In, weigh 0.1mmol (27.3mg) of 2-QBO and 0.1mmol (57.9mg) of Xantphos (4,5-bis(diphenylphosphine)-9,9-dimethylxanthene) successively, respectively dissolved in 5mLCH 2 Cl 2 In, all three solutions were mixed (the molar ratio of the three reactants was 1:1:1), and stirred to make the coordination reaction fully occur, and finally the resulting yellow solution was filtered, and all solvents were removed by rotary evaporation, Dry at 100°C to obtain orange crystalline powder as the product with a yield of 97% (calculated as Cu).

Embodiment 2

[0033] Synthesis of Cu(I) Complex [Cu(2-QBO)(Xantphos)]PF 6 single crystal: Weigh 37mg Cu(CH 3 EN) 4 PF 6 After dissolving 58 mg of Xantphos ligand in 10 mL of dichloromethane, 5 mL of 2-QBO ligand-containing dichloromethane solution was added to the above solution at one time, stirred to make it completely dissolved and filtered, and covered with iso Propanol promotes the crystallization of the product, and a large number of orange blocky crystals precipitate out after standing for several days. Pick an orange crystal with a size of 0.33mm×0.30mm×0.26mm for X-ray single crystal structure test. The molecular structure of the compound is shown in the attached figure 1 , and its unit cell packing structure is shown in the attached figure 2 .

[0034] For the complex [Cu(2-QBO)(Xantphos)]PF 6 A series of performance tests were carried out on pure phase crystal samples. The steady-state fluorescence test was carried out on the material crystal of the present invention, an...

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Abstract

The invention discloses a benzoxazolyl based CuN2P2 orange phosphorescent material and a preparation method. The phosphorescent complex of the benzoxazolyl based CuN2P2 orange phosphorescent material is obtained through cuprous salt and ligand complexation, a molecular structure of the phosphorescent complex is [Cu(2-QBO)(Xantphos)]PF6, the 2-QBO and the Xantphos in the formula are respectively electrically neutral bidentate chelating ligand 2-(2-benzoxazole) quinoline and 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene. The complex has the advantages that micro-molecules are easy to purify and luminous efficiency is high and has high heat stability. The benzoxazolyl based CuN2P2 orange phosphorescent material is obtained through direct mixing and reaction of Cu(CH3CN)4PF6 and a dichloromethane solution of the complex, has the advantages that a process is simple and convenient, a device is simple, raw materials are easy to obtain, cost is low and the like, can serve as an orange photo-luminescent material and can also serve as a luminous-layer phosphorescent material consisting of multiple layers of organic materials and used in an electroluminescent device.

Description

technical field [0001] The invention relates to the technical field of luminescent materials, to the fields of photoluminescent materials and electroluminescent materials, in particular to the field of organic electroluminescent materials. Background technique [0002] Luminescent materials include photoluminescence and electroluminescence in two categories of applications. Photoluminescence refers to the phenomenon in which an object is irradiated by an external light source, thereby obtaining energy to generate excitation and finally lead to luminescence. Photoluminescence can be caused by ultraviolet radiation, visible light and infrared radiation. Photoluminescent materials can be used in fluorescence analysis, traffic signs, tracking monitoring, agricultural light conversion film, scintillator in nuclear detection technology, fluorescent light collector in solar energy conversion technology, etc. Electroluminescence (EL for short) refers to the phenomenon that lumines...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06C07F9/6558H01L51/54
Inventor 柴文祥陶晓栋宋莉洪明卫魏钦华史宏声秦来顺陈海潮舒康颖
Owner CHINA JILIANG UNIV
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