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A monovalent copper complex luminescent material and its preparation method

A technology of luminescent materials and complexes, applied in the directions of luminescent materials, copper organic compounds, chemical instruments and methods, etc., can solve the problems that affect the popularization, application and market performance of OLED, the luminous intensity does not meet the application requirements, and is expensive. Effects of phosphorescent emission properties, good solubility and thermal stability, and low production cost

Inactive Publication Date: 2016-06-01
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 / yellow phosphorescent materials currently on sale for OLED are complexes of noble metals such as iridium and platinum. Although they have performed well in terms of performance, their expensive prices also affect the final OLED. Product promotion, application and market performance
The use of Cu(I) complexes as orange / yellow 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 monovalent copper complex luminescent material and its preparation method
  • A monovalent copper complex luminescent material and its preparation method
  • A monovalent copper complex luminescent material and its preparation method

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Experimental program
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Embodiment 1

[0031] Synthesis of Cu(I) Complex Cu(2-PBO)(POP)(PF 6) single crystal: Weigh 37mgCu(CH 3 EN) 4 PF 6 and 54mg of POP ligand were dissolved in 5mL of dichloromethane, and then 20mg of 2-PBO ligand was added to the above solution at one time, stirred to dissolve it completely and then filtered, and the filtrate was covered with isopropanol to promote crystallization of the product, and stood for several A large number of yellow flaky crystals were precipitated after days. A yellow crystal with a size of 0.29mm×0.18mm×0.01mm 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 .

Embodiment 2

[0033] Preparation of a large number of microcrystalline samples: weigh 112mgCu(CH 3 EN) 4 PF 6 Dissolve in 20mL of acetonitrile, weigh 162mg of POP and 59mg of 2-PBO ligand and dissolve in 20mL of acetonitrile (the molar ratio of the three reactants is 1:1:1), these two acetonitrile solutions are mixed, and stirring to make the coordination reaction fully occur, and finally the resulting yellow solution was filtered, and all solvents were removed by rotary evaporation, and vacuum-dried to obtain a yellow crystal powder as the product with a yield of 98% (calculated as Cu).

[0034] For the complex Cu(2-PBO)(POP)(PF 6 ) of pure-phase crystal samples were subjected to a series of performance tests. Microscopic melting point tests showed a melting point of 190 degrees Celsius. TG and DSC tests show that the material has good thermal stability, its initial decomposition temperature reaches 270 degrees Celsius, and there is no other obvious thermal transition before its meltin...

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Abstract

The invention discloses an orange phosphorescence Cu (I) complex luminescence material and a preparation method thereof. The above phosphorescence complex is obtained by complexing a cuprous salt with ligands, and the molecular structure of the complex is Cu(2-PBO)(POP)(PF6), wherein POP and 2-PBO are electrically-neutral ligands and represent bis(2-diphenylphosphinophenyl)ether and 2-(2-pyridyl)benzoxazole respectively. The complex has the advantages of easy purification and high luminescence efficiency of a micromolecule, and has a high thermal stability. The material is obtained through a direct mixing reaction of Cu(CH3CN)4PF6 and an acetonitrile solution of the ligands, and has the advantages of simple technology, simple apparatus, easily available raw materials, low cost and the like. The material can be used as an orange photoluminescence material, and can also be used as a luminescent layer phosphorescence material in electroluminescent devices composed of multilayer 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): C07F1/08C07F9/50C09K11/06H01L51/54
Inventor 柴文祥洪明卫徐凯杰张竹夹国华陈达范美强史宏声秦来顺舒康颖
Owner CHINA JILIANG UNIV
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