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Orgnic RE complex fluorescent material and its prepn and application

A technology of organic complexes and fluorescent materials, applied in the field of rare earth europium organic complex fluorescent materials, can solve the problems of insufficient luminous efficiency, poor light stability, and shortened fluorescent service life.

Inactive Publication Date: 2002-07-10
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this rare earth complex ZEuL 4 The luminous efficiency is not high enough, especially when the content of diketone in the complex is high, the light stability is poor, which shortens the service life of the fluorescence, and the films made by them cannot emit strong red light under fluorescent lamps and sunlight

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: get rare earth chloride EuCl 3 0.768 g, 1.8271 g of dibenzoylmethane, and 2.4655 g of methyl trifatty amine chloride were dissolved in ethanol solution and mixed evenly, stirred and heated for sufficient reaction, filtered, and dried to obtain a solid fluorescent complex. It appears bright red under the irradiation of light with a wavelength of 200nm-450nm.

Embodiment 2

[0029] Embodiment 2: According to product EuL 3 N 2 Weigh the stoichiometric reactant rare earth chloride EuCl 3 , dibenzoylmethane, and triisooctylamine were dissolved in acetone solvent and mixed uniformly. The synthesis steps were the same as in Example 1 to obtain a rare earth fluorescent complex, which was bright red under the irradiation of ultraviolet light with a wavelength of 340nm-410nm.

Embodiment 3

[0030] Embodiment 3: by product EuL 3 N 2 Weigh the stoichiometric reactant rare earth chloride EuCl 3 , dibenzoylmethane, and trialkylamine were dissolved in acetone solvent and mixed uniformly. The synthesis steps were the same as in Example 1 to prepare the rare earth fluorescent complex. When irradiated with light with a wavelength of 250nm-450nm, it will appear bright red.

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Abstract

The present invention discloses one kind of organic rare earth (RE) compound fluorescent material and its preparation and application. The present invention selects organic methyl trialiphatic amide chloride and beta diketo dibenzoyl methane as ligand and makes the organic RE compound has a diketone content lower than 40%. By means of common organic synthesis process, organic RE fluorescent compound with high efficiency, high brightness, high stability and long service life and to luminance with red light is obtained. The solid power of the present invention may be added into solid or flowingmaterial to act as display or special mark material.

Description

Technical field: [0001] The invention relates to a rare earth europium organic complex fluorescent material. [0002] The invention also relates to a method for preparing the rare earth europium organic complex fluorescent material. [0003] The invention also relates to the application of a rare earth europium organic complex fluorescent material. Background technique: [0004] The luminescence mechanism of rare earth complexes is that organic ligands transfer the absorbed energy to rare earth ions, so that their 4f electrons are excited to generate f-f electron transitions and emit light. For example, rare earth europium β-diketone complexes are mainly red light emitting materials 5 D. 0 - 7 f 2 transition. Its emission maximum is around 610nm, accompanied by weak orange light 5 D. 0 - 7 f 1 transition. This light conversion includes ligand energy absorption-ligand energy transfer-rare earth ion emission, then the ligand acts as an energy converter. In short, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K9/02
Inventor 张洪杰杨魁跃段志邦倪嘉缵
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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