A kind of benzimidazolyl quinoline cuprous complex luminescent material

A technology of benzimidazolylquinoline and luminescent materials, which is applied in the field of organic electroluminescent materials and luminescent materials, can solve the problems that the luminous intensity cannot meet the application requirements, achieve good phosphorescence emission performance, suppress non-radiative attenuation, and produce low cost effect

Inactive Publication Date: 2017-04-26
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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  • A kind of benzimidazolyl quinoline cuprous complex luminescent material
  • A kind of benzimidazolyl quinoline cuprous complex luminescent material
  • A kind of benzimidazolyl quinoline cuprous complex luminescent material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A large number of phosphorescent complex materials [Cu(2-QBI)(m-Tol 3 P) 2 ]PF 6 Crystal sample preparation: 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; 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 small amount of n-hexane in the above solution, All the solvent was removed by rotary evaporation at room temperature to finally obtain a yellow crystal product with a yield of 92% (calculated as Cu).

Embodiment 2

[0030] Synthesis of 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 5ml of dichloromethane and mixed successively, fully stirred 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 crystallization of the product was promoted, and a large number of yellow blocky crystals were precipitated after standing for a few days. Pick a yellow block crystal with a size of 0.23mm*0.16mm*0.15mm 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 .

[0031] For the yellow phosphorescent complex material [Cu(2-QBI)(m-Tol 3 P) 2 ]PF 6 A series of performance tests were carr...

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Abstract

The invention discloses a yellow phosphorescent material based on benzimidazolylquinoline cuprous complex in crystal form and a preparation method thereof. The phosphorescent complex of the present invention is obtained by the complexation of a monovalent copper salt and a ligand, and its molecular structure is [Cu(2-QBI)(m-Tol3P)2]PF6, where 2-QBI and m-Tol3P are electric Neutral heterocyclic ligands benzimidazolylquinoline and tris(m-methylphenyl)phosphine. The complex not only has the advantages of easy purification of small molecules and high luminous efficiency, but also has high thermal stability. The material is obtained by directly mixing and reacting Cu(CH3CN)4PF6 and the dichloromethane solution of the ligand, and has the advantages of simple process, simple equipment, readily available raw materials and low cost. The material can be used as a photoluminescent yellow phosphorescent material, and can also be used as a light-emitting layer phosphorescent material in an electroluminescent device composed of 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] 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, full-cure electroluminescence device, which has incomparable advantages of other display devices...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06C07F9/50H01L51/50H01L51/54
CPCC09K11/06C07F9/5045C09K2211/1029C09K2211/1044C09K2211/188H10K85/361H10K85/371H10K50/11H10K50/00
Inventor 柴文祥赵毅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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