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Tetrahedral cuprous complex luminescent material containing oxazolyl pyridine ligands

A technology of luminescent materials and complexes, which is applied in the direction of luminescent materials, copper organic compounds, compounds of group 5/15 elements of the periodic table, etc., which can solve the problem of expensive, luminous intensity not meeting the application requirements, and affecting the promotion and application of OLEDs and the market Performance and other issues, to achieve the effect of low production cost, good phosphorescent emission performance, and promote inter-system crossing

Inactive Publication Date: 2014-11-12
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] To analyze more specifically, the yellow 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 expensive price also affects the quality of OLED final products. Promote application and market performance
The use of Cu(I) complexes as yellow 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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  • Tetrahedral cuprous complex luminescent material containing oxazolyl pyridine ligands
  • Tetrahedral cuprous complex luminescent material containing oxazolyl pyridine ligands
  • Tetrahedral cuprous complex luminescent material containing oxazolyl pyridine ligands

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Embodiment 1

[0033] Preparation of a large number of microcrystalline samples: weigh 112mg Cu(CH 3 EN) 4 PF 6 and 59 mg of 4-PBO ligand were dissolved in 10 mL of acetonitrile, and 162 mg of POP ligand was weighed and dissolved in 5 mL of methylene chloride (the molar ratio of the three reactants was 1:1:1), and the two The solutions were mixed and stirred to make the coordination reaction fully occur. Finally, the obtained 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).

Embodiment 2

[0035] Synthesis of Cu(I) Complex Cu(POP)(4-PBO)(CH 3 CN)(PF 6 ) single crystal: weigh 37mg Cu(CH 3 EN) 4 PF 6 After dissolving 54mg of POP ligand in 5mL of dichloromethane, add 20mg of 2-PBO ligand to the above solution at one time, stir to dissolve it completely and then filter, cover the filtrate with isopropanol to promote crystallization of the product, and let stand After a few days, a large number of yellow blocky crystals were precipitated. A yellow crystal with a size of 0.37mm×0.33mm×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 .

[0036] For the complex Cu(POP)(4-PBO)(CH 3 CN)(PF 6 ) of pure-phase crystal samples were subjected to a series of performance tests. The material crystal of the present invention has been tested for steady state fluorescence, and the results show that the material can e...

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Abstract

The invention discloses a yellow phosphorescent tetrahedral cuprous complex luminescent material and preparation method thereof. The phosphorescent complex disclosed by the invention is obtained through the complexation of a cuprous salt and ligands and has the molecular structure of Cu(POP)(4-PBO)(CH3CN)(PF6), wherein POP and 4-PBO are electroneutral ligands, namely bis(2-diphenyl phosphorus phenyl) ether and 4-(2-benzoxazolyl)pyridine. The complex has the advantages of easiness in micromolecule purification and high luminescence efficiency and has the advantage of being easily dissolved by organic solvents; the material is directly obtained through the stepped mixing reaction of Cu(CH3CN)4PF6 and a solution of two ligands and has the advantages that the process is simple and convenient, the equipment is simple, the raw materials are easily obtained, the cost is low and the like; the material can serve as a photoluminescent yellow material and can also serve as a luminescent-layer phosphorescent material, consisting of multiple layers of organic materials, of 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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IPC IPC(8): C09K11/06C07F1/08C07F9/50H01L51/54
Inventor 徐凯杰柴文祥洪明卫林其忠张竹张艺程王聪勇夹国华范美强史宏声秦来顺舒康颖
Owner CHINA JILIANG UNIV
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