Zinc bromide complex light emitting material and preparation method thereof

A technology of luminescent materials and complexes, applied in luminescent materials, zinc organic compounds, chemical instruments and methods, etc., can solve the problems of restricting large-scale application, difficulty in mining, high price, etc., achieve good phosphorescence emission performance, and improve luminous efficiency , The effect of low production cost

Inactive Publication Date: 2014-04-02
CHINA JILIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these transition metals are expensive, low in content, and difficult to mine, which limits their large-scale application in real life and production.

Method used

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  • Zinc bromide complex light emitting material and preparation method thereof
  • Zinc bromide complex light emitting material and preparation method thereof
  • Zinc bromide complex light emitting material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Zinc Bromide Complex Zn(4-PBO) 2 Br 2 Preparation of:

[0032] A. Weigh 0.2mmol of ZnBr 2 , pour it into a Erlenmeyer flask, add 10ml of ethanol, and stir thoroughly to obtain a clear solution 1;

[0033] B. Weigh 0.2 mmol of 4-PBO with a stoichiometric ratio of 1:1, and stir thoroughly to obtain a light orange clear solution 2;

[0034]C. Slowly add solution 2 to solution 1, stir for 2 hours, filter, wash with ethanol, and dry to obtain light pink crystalline powder, which is the luminescent material Zn(4-PBO) 2 Br 2 .

Embodiment 2

[0036] Zinc Bromide Complex Zn(4-PBO) 2 Br 2 Single crystal acquisition and characterization:

[0037] The single crystal was obtained by solvothermal method, and 0.1 mmol of ZnBr was weighed 2 and 0.1mmol of 4-PBO, placed in a 25ml polytetrafluoroethylene hydrothermal kettle, added 12ml of ethanol, placed in a constant temperature oven, kept at 120°C for 3000min, and then slowly cooled to room temperature over 3 days to obtain a light pink transparent block shape crystal, choose a single crystal of appropriate size for X-ray single crystal diffraction, and analyze to get Zn(4-PBO) 2 Br 2 molecular structure. The molecular structure of the compound is shown in the attached figure 1 .

[0038] For the luminescent material Zn(4-PBO) 2 Br 2 The microcrystalline samples were subjected to a series of performance tests. The TG test shows that the material has good thermal stability, and its initial decomposition temperature reaches 250 degrees Celsius, see attached Figure...

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Abstract

The invention discloses a zinc bromide complex light emitting material and a preparation method thereof. The zinc bromide complex is obtained by complexing a ligand and zinc bromide. The molecular structure of the complex is Zn (4-PBO)<2>Br<2>, in which 4-BPO is a heterocyclic ligand 4-(2-benzoxazole) pyridine. The ligand is a coalition of benzoxazole and pyridine. As a benzoxazole group which is beneficial to molecular excited-state light emission and a heavy halogen bromine which is beneficial to excited-state intersystem crossing are introduced to the complex material, thus realizing good phosphorescent performance. The material has good solubility and thermal stability and is obtained by direct mixing reaction of the ligand and ethanol liquor of zinc bromide. The material has the advantages of simple and convenient process, simple equipment, easy availability of the raw materials, low cost and the like. The zinc bromide complex material can be used as photoluminescent materials in various colors and can be further used as light emitting layer materials in electroluminescent apparatuses comprising multilayers of organic materials.

Description

technical field [0001] The invention relates to the 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] With the development of technology, more and more functional materials with special photophysical and photochemical properties have been studied. Among them, Ir, Pt, Ru, Re, Os and other noble metal complexes and organic compounds are used as a new type of luminescent material. been widely concerned. However, these transition metals are expensive, low in content, and difficult to mine, which limits their large-scale application in real life and production. Therefore, it is particularly important to develop relatively cheap photoelectric functional materials of metal complexes. Compared with noble metals, the base metal Zn has the advantages of cheapness, environmental protection, and non-toxicity. Therefore, the resea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/06C09K11/06H01L51/54
Inventor 柴文祥洪明卫夹国华秦来顺史宏声舒康颖徐凯杰陈孝炯黄绵吉赵毅田园
Owner CHINA JILIANG UNIV
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