Green-yellow cuprous complex phosphorescent material with chain structure

A technology of phosphorescent materials and complexes, which is applied in the field of luminescent materials and organic electroluminescent materials, can solve the problems affecting the popularization and application of OEL and market performance, expensive and other problems, achieve good phosphorescent emission performance, low production cost, and promote intersystem crossover more effect

Inactive Publication Date: 2018-11-13
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The orange / yellow phosphorescent materials currently on sale for OEL are all complexes of precious metal iridium and platinum. Although they have good performance, the high price also affects the promotion and application of OEL final products and market performance.

Method used

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  • Green-yellow cuprous complex phosphorescent material with chain structure
  • Green-yellow cuprous complex phosphorescent material with chain structure
  • Green-yellow cuprous complex phosphorescent material with chain structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A large number of phosphorescent complex materials [Cu(Xantphos)(3-CNPy)] n (PF 6 ) n Crystal sample preparation: weigh 0.037g (0.1mmol) of Cu(CH 3 EN) 4 PF 6 , 0.058g (0.1mmol) of Xantphos, 0.011g (0.1mmol) of 3-CNPy; respectively dissolved in 5ml of acetonitrile and dichloromethane and then mixed successively, fully stirred to make the coordination reaction fully occur, and a yellow-green clear solution was obtained ; The above solution was evaporated under reduced pressure at room temperature to remove all solvents, and finally obtained a yellow-green crystal product with a yield of 91% (calculated as Cu).

Embodiment 2

[0031] Synthesis of yellow-green phosphorescent complex material [Cu(Xantphos)(3-CNPy)] n (PF 6 ) n single crystal: Weigh 0.037g (0.1mmol) of Cu(CH 3 EN) 4 PF 6 , 0.058g (0.1mmol) of Xantphos, 0.011g (0.1mmol) of 3-CNPy; respectively dissolved in 5ml of acetonitrile and dichloromethane and then mixed successively, fully stirred to make the coordination reaction fully occur, and a yellow-green clear solution was obtained ; After filtration, the upper layer of the solution was covered with n-hexane to promote product crystallization, and a large number of yellow-green needle-like crystals were precipitated after standing for a few days. Pick a yellow-green needle crystal with a size of 0.49mm*0.36mm*0.30mm 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] Yellow-green phosphorescent complex material [Cu(Xantphos)(3-CNPy)] n...

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Abstract

The invention discloses a green-yellow phosphorescent cuprous complex luminescent material, based on a unidimensional polymerization chain structure, of a crystal form, and a preparation method thereof. The phosphorescent complex is obtained by coordinate assembly of cuprous salt and ligands, and the molecular structure of the phosphorescent complex is [Cu(Xantphos)(3-CNPy)]n(PF6)n, wherein the Xantphos is electric-neutrality diphosphine ligand 4,5-diphenylphosphine-9,9-dimethylxanthene, the 3-CNPy is nitrogen-heterocyclic-ring ligand 3-cyanopyridine, and the n is the number of repetitive units of polymer structures and is similar to the degree of polymerization. The complex has the advantages of easiness in micromolecule purification and high luminescence efficiency, and has high thermalstability. The material is obtained from direct hybrid reaction between Cu(CH3CN)4PF6 and acetonitrile/dichloromethane solutions of the ligands, and has the advantages of simplicity and convenience inprocess, simple equipment, easiness in raw material acquisition, low cost and the like. The material can serve as a green-yellow photoluminescent phosphorescent material, and can also serve as a luminescent-layer phosphorescent material in an electroluminescence device made from 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] In today's society, with the development of the global scientific and technological revolution, the electronic computer industry has made unprecedented major achievements, and the traditional information display system can no longer meet people's increasing needs due to various shortcomings. People are beginning to look for display materials that can meet the demands of fast and efficient information display technology. After a lot of research, it was found that organic electroluminescent devices (OLEDs) have excellent performance in terms of contrast, resolution, energy consumption, luminous efficiency and flexibility, so they have gradually become the new favorite of researchers and developers. At present, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C08G83/00H01L51/54
CPCC09K11/06C08G83/008C09K2211/188H10K85/371
Inventor 柴文祥朱秋梦宋莉魏钦华秦来顺郭驾宇沈杭燕
Owner CHINA JILIANG UNIV
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