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Crystalline benzimidazolyl quinoline cuprous complex luminescent material

A technology of benzimidazolyl quinoline and luminescent materials, applied in the field of organic electroluminescent materials and luminescent materials, can solve the problem that the luminous intensity does not meet the application requirements, achieve good phosphorescence emission performance, suppress non-radiative attenuation, equipment simple effect

Inactive Publication Date: 2016-09-07
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It's just that the luminous intensity of Cu(I) complex phosphorescent materials in the OLED working temperature range is still not up to the application requirements.

Method used

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  • Crystalline benzimidazolyl quinoline cuprous complex luminescent material
  • Crystalline benzimidazolyl quinoline cuprous complex luminescent material
  • Crystalline benzimidazolyl quinoline cuprous complex luminescent material

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Experimental program
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Effect test

Embodiment 1

[0029] A large number of phosphorescent complex materials [Cu(2-QBI)(m-Tol 3 P) 2 ]PF 6 Crystal sample preparation: weigh 0.074g (0.2mmol) of Cu(CH 3 EN) 4 PF 6 , 0.122g (0.4mmol) of m-Tol 3 P, 0.048g (0.2mmol) of 2-QBI; after dissolving with 5ml of dichloromethane respectively, mix successively, fully stir to make it fully take place coordination reaction, obtain orange-red clear solution; Add a large amount of n-hexane in the above solution to promote The product crystallized, and a large amount of crystals precipitated after standing for several minutes, which was filtered and vacuum-dried to finally obtain a light orange-yellow crystal product with a yield of 92% (calculated as Cu).

Embodiment 2

[0031] Synthesis of orange-yellow phosphorescent complex material [Cu(2-QBI)(m-Tol 3 P) 2 ]PF 6 single crystal: Weigh 0.037g (0.1mmol) of Cu(CH 3 EN) 4 PF 6 , 0.061 g (0.2 mmol) of m-Tol 3 P, 0.024g (0.1mmol) of 2-QBI; respectively dissolved in 2ml of dichloromethane and mixed successively, stirred fully to make it fully undergo a coordination reaction to obtain an orange-red clear solution; after filtering, cover the upper layer of the solution with n-hexane The product was promoted to crystallize, and a large number of light orange-yellow massive crystals were precipitated after standing for a few days. A light orange-yellow block crystal with a size of 0.48mm*0.43mm*0.36mm 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 .

[0032] For the orange-yellow phosphorescent complex material [Cu(2-QBI)(m-Tol 3 P) 2 ]PF ...

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Abstract

The invention discloses a crystalline benzimidazolyl quinoline based cuprous complex orange-yellow phosphorescent material and a preparation method therefor. The phosphorescent complex disclosed by the invention is prepared from a cuprous salt and a ligand through complexing and has a molecular structure of [Cu(2-QBI)(m-Tol3P)2]PF6, wherein 2-QBI and m-Tol3P are electrically-neutral heterocyclic ligands, i.e., benzimidazolyl quinoline and tri(m-methoxyphenyl)phosphine. The complex not only has the advantages of easiness in micromolecule purification and high luminescence efficiency, but also has high thermal stability. The material is prepared through directly mixing Cu(CH3CN)4PF6 with a dichloromethane solution of the ligands and carrying out a reaction, thereby having the advantages of simple and convenient process, simple equipment, easiness in raw material obtaining, low cost and the like. The material can serve as a photoluminescent orange-yellow phosphorescent material and can also serve as a phosphorescent material for a luminescent layer in an electroluminescent device made from multiple layers of 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] Organic electroluminescence, referred to as OEL, is a phenomenon in which electric energy excites organic materials to emit light. It was discovered as early as the 1960s, but it has not attracted widespread attention due to lack of clear application prospects. This situation has changed dramatically since Deng Qingyun and others published their research work on organic light-emitting diodes (OLEDs) in 1987. Simply put, OLED is an electroluminescent device formed by a multi-layer organic thin film structure, which is easy to manufacture and requires only a low driving voltage. OLED is a high-brightness, wide-view, fully cured electroluminescent device. [0003] As a new generation of flat panel display techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/50C09K11/06H01L51/54
CPCC09K11/06C07F9/5045C07F9/5054C07B2200/13C09K2211/188H10K85/371H10K85/6572H10K50/11
Inventor 赵毅柴文祥宋莉朱秋梦秦来顺范美强史宏声郭驾宇陈智
Owner CHINA JILIANG UNIV
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