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A Green Phosphorescent Material of Cuprous Complex Based on Pyridylphosphine Ligand

A green phosphorescence and pyridylphosphine technology, applied in the field of organic electroluminescent materials and luminescent materials, can solve the problems of high cost, the luminous intensity cannot meet the application requirements, affecting the popularization and application of OLED and the market performance, etc. The effect of suppressing the non-radiative decay process related to structural distortion and improving the phosphorescence emission performance

Inactive Publication Date: 2017-05-31
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 green 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 quality of OLED final products. Promote application and market performance
The use of Cu(I) complexes as green 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 Green Phosphorescent Material of Cuprous Complex Based on Pyridylphosphine Ligand
  • A Green Phosphorescent Material of Cuprous Complex Based on Pyridylphosphine Ligand
  • A Green Phosphorescent Material of Cuprous Complex Based on Pyridylphosphine Ligand

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A large number of phosphorescent complex materials [Cu(POP)(DPPY)][Cu(POP)(DPPY)(i-PrOH)](PF 6 ) 2 ·(CH 2 Cl 2 ) Microcrystalline sample preparation: Weigh 0.1mmol (37.3mg) [Cu(CH 3 EN) 4 ]PF 6 Dissolve in 5mL dichloromethane to obtain a clear solution A; then weigh 0.1mmol (53.9mg) POP and dissolve it in 5mL dichloromethane to obtain a colorless clear solution B; add solution B to solution A and stir to complete the reaction Then it becomes a clear solution C; then weigh 0.1mmol (26.3mg) DPPY and dissolve it in 5mL dichloromethane to obtain a colorless and transparent solution D; then slowly add D to the above mixed solution C, and stir again at room temperature to make it Fully react; finally, filter the obtained light yellow solution, remove all solvents by rotary evaporation, and dry in vacuum to obtain a white crystal powder as the product with a yield of 94% (calculated as Cu).

Embodiment 2

[0032] Synthesis of phosphorescent complex materials [Cu(POP)(DPPY)][Cu(POP)(DPPY)(i-PrOH)](PF 6 ) 2 ·(CH 2 Cl 2 ) single crystal: Weigh 50 mg of the white crystal product powder obtained in Example 1, re-dissolve completely with 10 mL of dichloromethane and filter, cover the filtrate with isopropanol to promote crystallization of the product, and separate out a large amount of colorless massive crystals after standing for several days . A colorless block crystal with a size of 0.48mm×0.40mm×0.39mm 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 .

[0033] For phosphorescent complex materials [Cu(POP)(DPPY)][Cu(POP)(DPPY)(i-PrOH)](PF 6 ) 2 ·(CH 2 Cl 2 ) 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 fluores...

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Abstract

The invention discloses a pyronyl phosphine ligand based cuprous-complex green phosphorescent material and a preparation method thereof. The phosphorescent complex of the pyronyl phosphine ligand based cuprous-complex green phosphorescent material is obtained through cuprous salt and ligand complexation, a molecular structure of the phosphorescent complex is [Cu(POP)(DPPY)][Cu(POP)(DPPY)(i-PrOH)(PF6)2.(CH2C12), the POP and the DPPY in the formula are respectively electrically neutral phosphine ligand bis(2-diphenylphosphinophenyl) ether and diphenyl-2-pyridylphosphine. The complex has the advantages that micro-molecules are easy to purify and luminous efficiency is high and has high heat stability. The pyronyl phosphine ligand based cuprous-complex green phosphorescent material is obtained through step-by-step mixing and reaction of Cu(CH3CN)4PF6 and dichloromethane solutions of the ligands POP and DPPY, 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 a green 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): C07F9/58C09K11/06H01L51/54
Inventor 柴文祥宋莉洪明卫赵士龙邓德刚陈智唐高陶晓栋魏钦华陈海潮
Owner CHINA JILIANG UNIV
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