Rare earth complex composite fluorescent material and preparation method thereof

A technology of rare earth complexes and composite fluorescence, which is applied in the field of fluorescent materials and can solve problems such as poor light and thermal stability and difficult recovery of rare earth complexes

Pending Publication Date: 2020-01-07
FUYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The rare earth europium complex is a red fluorescent material, which has the advantages of unique molecular structure, photoluminescence mechanism, strong fluorescence and good monochromaticity, and has been applied in many fields such as industry, agriculture, biology, etc., but its light, The thermal stability is slightly poor, an...

Method used

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  • Rare earth complex composite fluorescent material and preparation method thereof
  • Rare earth complex composite fluorescent material and preparation method thereof
  • Rare earth complex composite fluorescent material and preparation method thereof

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preparation example Construction

[0084] (1) The preparation method of the composite fluorescent material is simple and easy;

[0085] (2) The particle diameter of the composite fluorescent material prepared by the method of the present invention is uniform and can be controlled within an appropriate particle diameter range;

[0086] (3) The composite fluorescent material has high fluorescence excitation intensity, high fluorescence emission intensity, high quantum yield and long fluorescence lifetime;

[0087] (4) The composite fluorescent material of the present invention has low cost and good thermal stability, and is expected to become a good light emitter in high temperature resistant devices.

Embodiment 1

[0090] Weigh dry 1g of calcium carbonate, and 0.258g of europium chloride, add to the reaction bottle, add solvent absolute ethanol 20mL, stir evenly, and then ultrasonically oscillate for 30min;

[0091] Weigh 0.2781g of TPPO and 0.3334g of TTA respectively, add to the beaker, then add 10mL of absolute ethanol, stir to dissolve, and transfer to the addition funnel;

[0092] Place the above-mentioned reaction bottle in the heating mantle, start stirring, and connect the reflux device, then dropwise add the two ligand solutions in the feeding funnel, after 10 minutes, the dropwise addition is completed, heat to reflux reaction, and react for 0.5h;

[0093] After completion of the reaction, cool down to room temperature, filter, and put the obtained filter cake into an oven for drying at 90°C for 2 hours to obtain the product; denoted as E1.

Embodiment 2

[0095] The method used in this embodiment is the same as in Example 1, the only difference being that the reaction time is different, and the reaction time in this embodiment is 1 h. The product obtained is designated as E2.

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Abstract

The invention provides a rare earth complex composite fluorescent material and a preparation method thereof. According to the preparation method, europium ions are used as a luminous body; triphenyl phosphine oxide (TPPO) and 2-thiophenyltrifluoroacetone (TTA) are taken as organic ligands; calcium carbonate is taken as a matrix; an europium complex composite fluorescent material is prepared underset conditions, and the obtained composite fluorescent material is characterized. The cost of the fluorescent material is reduced, and the prepared material is good in thermal stability and fluorescence property, and is expected to become a good luminophor in high-temperature-resistant devices.

Description

technical field [0001] The invention relates to the field of fluorescent materials, in particular to a rare earth complex composite fluorescent material and a preparation method thereof. Background technique [0002] Rare earth elements have been widely used in nonferrous metallurgy, petrochemical, military, glass ceramics, magnetic materials and various functional materials, light industry and textile industry, agricultural medicine and other fields. [0003] Rare earth elements refer to group IIIB in the periodic table of elements, 21st element scandium Sc, 39th element yttrium Y and 57-71 lanthanum La, cerium Ce, praseodymium Pr, neodymium Nd, promethium Pm, samarium Sm, europium Eu, gadolinium Gd , terbium Tb, dysprosium Dy, holmium Ho, erbium Er, thulium Tm, ytterbium Yb, lutetium Lu, a total of 17 elements. Containing rare earth elements as matrix components, activators, co-activators or dopants is a general term for rare earth fluorescent materials. [0004] Rare ea...

Claims

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Application Information

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IPC IPC(8): C09K11/06C07F5/00
CPCC09K11/06C07F5/003C09K2211/182
Inventor 陶栋梁金凤宋苗苗王永忠姜广鹏陈继堂张琳崔玉民张宏李慧泉
Owner FUYANG NORMAL UNIVERSITY
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