Double-ligand rare earth composite fluorescent material and preparation method thereof

A rare earth fluorescent material and fluorescent material technology, applied in the field of new composite luminescent materials, can solve the problems of low luminous efficiency and short life

Inactive Publication Date: 2020-03-20
FUYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the rare earth binary complex contains only one ligand, there are still disadvantages such as low luminous efficiency and short life, which has triggered people's thinking - the synthesis of rare earth ternary complexes

Method used

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  • Double-ligand rare earth composite fluorescent material and preparation method thereof
  • Double-ligand rare earth composite fluorescent material and preparation method thereof
  • Double-ligand rare earth composite fluorescent material and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0077] (2) The preparation method of the composite fluorescent material is simple and easy;

[0078] (3) The composite fluorescent material and the preparation method thereof are environmentally friendly and have no environmental pollution.

Embodiment 1

[0084] Example 1 Tb(ACAC) 3 Preparation of phen

[0085] Use a graduated cylinder to measure 20 mL of absolute ethanol and put it into a 50 mL beaker; weigh 1.5 mmol (about 0.5401 g) of terbium chloride hexahydrate with an electronic balance, put it into the above-mentioned beaker containing ethanol, stir and dissolve for 15 minutes, and heat the system temperature to 40°C;

[0086] Weigh 4.5mmol (about 0.46ml) of acetylacetone and add it dropwise to the above beaker, and continue to stir for 30min (denoted as ligand I system 1);

[0087] Measure 0.46g (0.63ml) of triethylamine and dissolve and dilute it with 5ml of absolute ethanol, then add it dropwise to the Ligand I system. , calculated in the amount of pure triethylamine, the dropping time is 30min; continue to react for 1h (recorded as ligand I system 2);

[0088] Weigh 1.5mmol (0.2973g) 1,10-phenanthroline, add 5mL ethanol to dissolve and dilute, then add dropwise to Ligand I system 2, the temperature of the reacti...

Embodiment 2

[0090] Example 2 Tb(ACAC) 2 (phen) 2 preparation of

[0091] This embodiment is the same as the method used in Example 1, the only difference is that the amount of acetylacetone used is 3.0mmol (0.3003g), the amount of triethylamine is 3.0mmol (0.3036g), and the amount of 1,10-phenanthroline is 3.0 mmol (0.5406 g). The product is denoted as Tb(ACAC) 2 (phen) 2 .

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Abstract

The invention provides a double-ligand rare earth composite fluorescent material and a preparation method thereof, wherein a terbium double-ligand rare earth cooperation compound is prepared by changing the ratio of a first ligand acetylacetone to a second ligand 1,10-phenanthroline, and is tested or characterized, wherein the fluorescence emission intensity can reach 1149948 CPS, and the quantumyield can reach 24.98%. The method has a certain guiding significance in the later selection of organic ligands beneficial to Tb<3+> characteristic emission and synthesis of photoluminescence and electroluminescence materials with excellent performances.

Description

technical field [0001] The invention relates to a novel composite luminescent material, in particular to a double-ligand rare earth composite fluorescent material and a preparation method thereof. Background technique [0002] Rare earth elements have very special photoelectromagnetic and catalytic properties, and are known as the treasure house of new materials. They are widely used in many aspects and fields of modern science and technology. They can be combined with many materials to form new materials with different properties and varieties. , can greatly improve the quality and performance of other products. For example: rare earth laser and luminescent materials, rare earth hydrogen storage materials, magnetic materials, rare earth gas purification catalytic materials, rare earth superconducting materials, etc. my country is a country rich in rare earth resources. The rare earth reserves discovered so far account for more than 90% of the world's rare earth content, ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00C09K11/06
CPCC07F5/003C09K11/06C09K2211/182
Inventor 王永忠陶栋梁金凤张琳姜广鹏陈继堂
Owner FUYANG NORMAL UNIVERSITY
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