Cuprous complex phosphor material of methyl substitution benzoxazolyl pyridine

A benzoxazolyl pyridine, phosphorescent material technology, applied in the direction of luminescent materials, copper organic compounds, electrical components, etc., can solve problems such as expensive, affecting promotion and application and market performance, luminous intensity can not meet application requirements, etc. Effects of low production cost, good phosphorescence emission properties, good solubility and thermal stability

Inactive Publication Date: 2015-09-09
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 yellow / green phosphorescent materials currently on sale for OLEDs are all complexes of noble metals such as iridium and platinum. Although they have performed well in performance, their expensive prices also affect the final OLED. Product promotion, application and market performance
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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  • Cuprous complex phosphor material of methyl substitution benzoxazolyl pyridine
  • Cuprous complex phosphor material of methyl substitution benzoxazolyl pyridine
  • Cuprous complex phosphor material of methyl substitution benzoxazolyl pyridine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A large number of Cu(I) complexes [Cu(5-Me-2-PBO)(PPh 3 ) 2 ]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 (21.3mg) of 4-Me-2-PBO and 0.2mmol (52.4mg) of PPh 3 , were dissolved in 5mL CH 2 Cl 2 , all three solutions were mixed (the molar ratio of the three reactants Cu(CH 3 EN) 4 PF 6 :PPh 3 : 5-Me-2-PBO is 1: 2: 1), and stirred to make the coordination reaction fully occur, and finally the obtained bright yellow solution was filtered, and all solvents were removed by rotary evaporation, and vacuum-dried to obtain a bright yellow crystal powder that was As the product, the yield is 96% (calculated as Cu).

Embodiment 2

[0033] Synthesis of Cu(I) complex [Cu(5-Me-2-PBO)(PPh 3 ) 2 ]PF 6 single crystal: Weigh 37mg Cu(CH 3 EN) 4 PF 6 and 53mg of PPh 3 After the ligand is dissolved in 10mL of dichloromethane, add 5mL of the dichloromethane solution containing 22mg of 4-Me-2-PBO ligand to the above solution at one time, stir to dissolve it completely and filter it, and cover the filtrate with n-hexane Alkane promotes the crystallization of the product, and a large number of yellow blocky crystals are precipitated after standing for several days. A yellow crystal with a size of 0.28mm×0.23mm×0.20mm 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 .

[0034] For the complex [Cu(5-Me-2-PBO)(PPh 3 ) 2 ]PF 6 A series of performance tests were carried out on pure phase crystal samples. The material crystal of the present invention has been te...

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Abstract

The invention discloses yellow green phosphorescence cuprous complex lighting material and a preparation method thereof. The phosphorescence complex is obtained by cuprous salt and ligand complex and its molecular structure is [Cu (5-Me-2-PBO) (PPh3)2] PF6, wherein 5-Me-2-PBO and PPh3 are electric neutral ligand 5-methyl-2-(2-benzoxazolyl) pyridine and triphenylphosphine. The complex has the advantages of micromolecule which is easy to purify and lighting efficiency is high and high thermal stability. The material is obtained by directly blending Cu (CH3CN) 4PF6 with dichloromethane solution of ligand and has the advantages of simplicity in process and equipment, obtainable raw materials and low cost. The material can be used as photoluminescence yellow green material and can be used as luminescent phosphor material composed of multiple organic material layers in an electroluminescence 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 Applications(China)
IPC IPC(8): C07F1/08C09K11/06H01L51/54
CPCC09K11/06C07F1/08C09K2211/188H10K85/371
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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