Red luminescent polymer material containing Zn-Eu (Zinc-Europium) mixed metal and preparation method of polymer red luminescent material

A technology of red luminescence and mixed metals, applied in luminescent materials, chemical instruments and methods, organic chemistry, etc., can solve the problems of poor stability of doped materials, decrease of fluorescence intensity, poor dispersion, etc., and achieve excellent luminescence performance and crystallization Good performance and excellent comprehensive performance

Inactive Publication Date: 2013-01-30
LUOYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor dispersion of rare earth complexes in the polymer matrix and the disadvantages of easy phase separation from the matrix, the stability of the doped material is poor, concentration quenching occurs between fluorescent molecules, and the fluorescence intensity decreases.

Method used

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  • Red luminescent polymer material containing Zn-Eu (Zinc-Europium) mixed metal and preparation method of polymer red luminescent material
  • Red luminescent polymer material containing Zn-Eu (Zinc-Europium) mixed metal and preparation method of polymer red luminescent material
  • Red luminescent polymer material containing Zn-Eu (Zinc-Europium) mixed metal and preparation method of polymer red luminescent material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of polymer red luminescent material containing Zn-Eu mixed metal, the chemical formula of polymer red luminescent material is: {[Eu (PBDA) 2 · 2H 2 O][Zn(PBDA) 2 Cl 2 ]} n , where n is greater than 1, the material can be excited by near-ultraviolet light and emit red fluorescence.

[0027] The preparation method of a polymer red luminescent material containing Zn-Eu mixed metals comprises the following steps:

[0028] (1) Preparation of organic ligands:

[0029] a. Mix 1,2-2 cyano-3-nitrobenzene and 3-hydroxypyridine at a molar ratio of 1:1 to obtain mixture A, then take 2 g of mixture A and 4 ml of DMF and add it at a concentration of 0.4mol / L K 2 CO 3 Solution 20ml, to obtain the mixed solution B, the mixed solution B was heated to 70°C, and refluxed for 90min to obtain the intermediate product C;

[0030] B, the intermediate product C that step a makes is added in the NaOH solution of 20ml concentration 1mol / L, obtains intermediate product D, then int...

Embodiment 2

[0047] A preparation method of a polymer red luminescent material containing Zn-Eu mixed metals, comprising the following steps:

[0048] (1) Preparation of organic ligands:

[0049] a. Mix 1,2-2 cyano-3-nitrobenzene and 3-hydroxypyridine at a molar ratio of 2:1 to obtain mixture A, then take 3g of mixture A and 7 ml of DMF and add it at a concentration of 0.4mol / L K 2 CO 3 Solution 30ml, to obtain the mixed solution B, the mixed solution B was heated to 90°C, and refluxed for 100min to obtain the intermediate product C;

[0050] B, the intermediate product C that step a makes is added in the NaOH solution of 20ml concentration 0.5mol / L, obtains intermediate product D, then intermediate product D is added in the dilute HCl solution of 20ml concentration 1mol / L, obtains organic Ligand H 2 PBDA;

[0051] (2) Preparing the precursor solution:

[0052] c. Take 0.1 mmol of the organic ligand H prepared in step (1) 2 PBDA was dissolved in a mixture of 40ml water and an organi...

Embodiment 3

[0061] A preparation method of a polymer red luminescent material containing Zn-Eu mixed metals, comprising the following steps:

[0062] (1) Preparation of organic ligands:

[0063] a. Mix 1,2-2 cyano-3-nitrobenzene and 3-hydroxypyridine at a molar ratio of 1: 2 to obtain mixture A, then take 2g of mixture A and 5 ml of DMF and add it at a concentration of 0.4mol / L K 2 CO 3 Solution 40ml, to obtain the mixed solution B, the mixed solution B was heated to 90°C, and refluxed for 110min to obtain the intermediate product C;

[0064] B, the intermediate product C that step a makes is added in the NaOH solution of 20ml concentration 0.7mol / L, obtains intermediate product D, then intermediate product D is added in the dilute HCl solution of 20ml concentration 0.5mol / L, after the reaction obtains organic ligand H 2 PBDA;

[0065] (2) Preparing the precursor solution:

[0066] c. Take 0.2 mmol of the organic ligand H prepared in step (1) 2 PBDA was dissolved in a mixture of 30...

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Abstract

The invention relates to a red luminescent polymer material containing Zn-Eu (Zinc-Europium) mixed metal and a preparation method of the red luminescent polymer material. The chemical formula of the polymer red luminescent material is as follows: {[Eu(PBDA)2.2H2O][Zn(PBDA)2Cl2]}n, wherein n is more than 1, and the material can be stimulated by near ultraviolet and emit the bright red fluorescent light. The preparation method of the polymer red luminescent material containing the Zn-Eu mixed metal is as follows: firstly, preparing an organic ligand; secondly, preparing a precursor solution; and thirdly, preparing a luminous material. The red luminescent polymer material prepared by the invention is better in crystal crystallinity, higher in thermostability, more excellent in luminescence property, lower in raw material cost, and free from toxicity and pollution; and the red luminescent polymer material is simple in preparation technology and device, excellent in comprehensive property, and suitable for industrial production, so that the material can meet displaying requirements in electronic industries and public places and requirements on fields of display, information, illumination and application, such as household appliances and the like.

Description

technical field [0001] The invention relates to the field of rare earth luminescent materials, in particular to a polymer red luminescent material containing Zn-Eu mixed metal and a preparation method thereof. Background technique [0002] In recent years, rare earth luminescent materials with stable physical and chemical properties and no pollution have become a new direction for the research and development of new luminescent materials. Although rare earth luminescent materials have rich luminescent colors, there are relatively few varieties of rare earth red luminescent materials. Moreover, for compounds based on pure rare earths, the quantum efficiency and fluorescence efficiency are low due to parity prohibition (Laporte selection law) on the f-electron transition. Although rare earth-doped fluoride nanocrystals have been prepared, they have the advantages of high photochemical stability, narrow linewidth, long fluorescence lifetime, and high luminous efficiency, and c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C07F19/00
Inventor 冯勋韩民乐周丽丽刘朗王晔
Owner LUOYANG NORMAL UNIV
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