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Zinc nitrate complex luminescence material

A technology of luminescent material and zinc nitrate, applied in luminescent materials, zinc organic compounds, electrical components, etc., can solve problems such as high cost, and achieve the effects of low production cost, simple process and easy purification

Inactive Publication Date: 2014-02-19
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, such noble metal complexes are expensive, especially the problem of environmental risks

Method used

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  • Zinc nitrate complex luminescence material
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  • Zinc nitrate complex luminescence material

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Synthetic luminescent material Zn(NO 3 ) 2 (4-PBO) 2 Single crystal of the complex: 30mg Zn(NO 3 ) 2 , 40mg of 4-PBO ligand and 10mL of ethanol were placed in a 25mL airtight polytetrafluoroethylene hydrothermal reactor, the reactor was heated to 100 degrees Celsius and kept for two days, and then slowly and uniformly cooled within 3 days, After cooling down to room temperature, the reactor was opened and filtered to obtain light-colored massive crystals. A light-colored crystal with a size of 0.33mm×0.19mm×0.16mm was selected for the 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 .

Embodiment 2

[0031] Weigh 90mg Zn(NO 3 ) 2 Dissolve in 40mL ethanol, weigh 120mg of 4-PBO ligand and dissolve in 20mL ethanol (the molar ratio of the two reactants is 1:2), mix these two ethanol solutions, and stir to make it fully complexed Finally, all the solvents were removed by rotary evaporation, and vacuum-dried to obtain a crystalline light-colored powder as the product, with a yield of 99% (calculated as Zn).

[0032] For the luminescent material Zn(NO 3 ) 2 (4-PBO) 2 The microcrystalline samples were subjected to a series of performance tests. TG test shows that the material has good thermal stability, and its initial decomposition temperature reaches 240 degrees Celsius, see attached image 3 . The steady-state fluorescence test results show that the material emits strong blue light under the excitation of ultraviolet light, and the color coordinate value is (0.1757, 0.1569). The specific emission spectrum and excitation spectrum are shown in the attached Figure 5shown. ...

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Abstract

The invention discloses a zinc nitrate complex luminescence material and a preparation method thereof. The above zinc nitrate complex is obtained by complexing a ligand with zinc nitrate, the molecular structure of the complex is Zn(NO3)2(4-PBO)2, wherein 4-PBO represents a heterocyclic ligand 4-(2-pyridyl)benzoxazole, and the ligand is a combination of benzoxazole and pyridine. A benzoxazole group in favor of the molecular excited state luminescence is introduced into the complex material, and the steric hindrance of the ligands surrounding divalent zinc can inhibit the non-radiative decay of the molecular excited state, so the molecular material has a good light emitting performance. The material has a very good solubility and a very good thermal stability, is obtained through a direct mixing reaction of the ligands and an ethanol solution of zinc nitrate, and has the advantages of simple technology, simple apparatus, easily available raw materials, low cost and the like. The zinc nitrate complex material can be used as a blue photoluminescence material, and can also be used as a luminescent layer material of electroluminescent devices 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] Materials are recognized as one of the three pillars of the development of modern society. As one of the important functional materials, luminescent materials are widely used in industry, agriculture, medicine, national defense and other fields. For example, they can be used as fluorescent whitening agents, fluorescent pigments, fluorescent dyes, fluorescent reagents, laser dyes, fluorescent powders for lamps, and the like. In particular, the demand for various information displays in today's society and the urgent need for energy-saving lighting under the background of the energy crisis have greatly promoted the rapid development of luminescent materials. [0003] Distinguished from the principle of lumines...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/06C09K11/06H01L51/54
Inventor 柴文祥张小丽夹国华史宏声秦来顺范美强舒康颖
Owner CHINA JILIANG UNIV
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