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A yellow phosphorescent material of methyl-substituted benzoxazolyl pyridine copper complex

A benzoxazolyl pyridine, methyl-substituted technology, applied in the direction of luminescent materials, copper organic compounds, compounds of elements of Group 5/15 of the periodic table, etc. Good solubility and thermal stability, inhibition of non-radiative decay, low production cost

Inactive Publication Date: 2017-04-26
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The use of Cu(I) complexes as yellow / green phosphorescent materials has a long history (N.Armaroli, G.Accorsi, F.Cardinali, A.Listorti, Top.Curr.Chem.2007, 280, 69-115.) , this 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 yellow phosphorescent material of methyl-substituted benzoxazolyl pyridine copper complex
  • A yellow phosphorescent material of methyl-substituted benzoxazolyl pyridine copper complex
  • A yellow phosphorescent material of methyl-substituted benzoxazolyl pyridine copper complex

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Experimental program
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Effect test

Embodiment 1

[0029]A large amount of cuprous complex [Cu(5-Me-2-PBO)(POP)]PF 6 Crystal sample preparation: weigh 0.1mmol (37.3mg) of [Cu(CH 3 EN) 4 ]PF 6 Dissolve in 5mL CH 2 Cl 2 , then weigh 0.1mmol (54mg) of POP and 0.1mmol (21.3mg) of 4-Me-2-PBO in turn, and dissolve them in 3mL CH 2 Cl 2 In; the three solutions are mixed in turn (the molar ratio of the three reactants Cu(CH 3 EN) 4 PF 6 : POP: 5-Me-2-PBO is 1: 1: 1), and stirred to make the coordination reaction fully occur, and finally the resulting yellow solution was filtered, added a small amount of isopropanol and evaporated under reduced pressure at room temperature to obtain a large amount of The yellow crystalline product was vacuum-dried with a yield of 94% (calculated as Cu).

Embodiment 2

[0031] Synthesis of Yellow Phosphorescent Complex Material [Cu(5-Me-2-PBO)(POP)]PF 6 single crystal: weigh 0.1mmol Cu(CH 3 EN) 4 PF 6 After dissolving 0.1mmol of POP ligand in 3mL of dichloromethane, add 3mL of dichloromethane solution containing 0.1mmol of 4-Me-2-PBO ligand into the above solution at one time, stir to dissolve it completely and filter , The filtrate was covered with isopropanol to promote the crystallization of the product, and after standing for several days, a large number of yellow blocky crystals were precipitated. A yellow crystal with a size of 0.35mm×0.32mm×0.23mm was selected 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 .

[0032] For the complex [Cu(5-Me-2-PBO)(POP)]PF 6 A series of performance tests were carried out on pure phase crystal samples. The steady-state fluorescence test was carried out on t...

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Abstract

The invention discloses a yellow phosphor cuprous complex light-emitting material and a preparation method thereof.The cuprous complex is obtained by complexing monovalent copper salt and a ligand, the molecular structure is [Cu(5-Me-2-PBO)(POP)] PF6, 5-Me-2-PBO and POP in the formula are an electrically neutral ligand 5-methyl-2-(2-benzoxazole) pyridine and bi-(2-diphenylphosphine) phenylate.The complex has the advantages that micromolecules are purified easily, and light emitting efficiency is high and has high thermal stability.The material is obtained in the mode that Cu(CH3CN)4PF6 and a dichloromethane solution of the ligand are directly mixed for a reaction and has the advantages that the process is simple and convenient, equipment is simple, raw materials are easy to obtain, and the cost is low.The material can serves as a photoluminescence yellow light material and can also be used as a light-emitting layer phosphorescent material in an electroluminescent device composed of multi-layer organic materials.

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): C09K11/06C07F1/08C07F9/50C07F9/6558C07F9/6596
CPCC07F1/08C07F9/5045C07F9/65583C07F9/6596C09K11/06C09K2211/188
Inventor 柴文祥寿容儿洪明卫宋莉秦来顺范美强史宏声魏钦华
Owner CHINA JILIANG UNIV
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