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Rare earth complex red fluorescent material and preparation method and application thereof

A technology of rare earth complexes and luminescent materials, applied in the field of rare earth luminescent materials and rare earth complex luminescent materials, can solve the problems of insufficient luminous efficiency and thermal stability of rare earth complex luminescent materials, and achieve improved luminous efficiency and thermal stability, The effect of simple raw materials and low production cost

Inactive Publication Date: 2014-06-04
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the luminous efficiency and thermal stability of rare earth complex luminescent materials are not high enough, which is still a key problem restricting their application in important fields such as organic electroluminescence.

Method used

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  • Rare earth complex red fluorescent material and preparation method and application thereof
  • Rare earth complex red fluorescent material and preparation method and application thereof
  • Rare earth complex red fluorescent material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Rare earth complex polycrystalline powder Eu(TTA) 3 Preparation of (QPO):

[0029] 1). Weigh 0.5mmol of Eu(NO 3 ) 3 ·6H 2 O and 1.5mmol α-thienoyltrifluoroacetone were added to dissolve in 10mL of acetonitrile, and 3mL of 0.5mol / L sodium hydroxide solution was added dropwise, and stirred thoroughly to obtain a clear solution A;

[0030] 2). Weigh 0.5 mmol 2-(2-benzoxazole) quinoline, add 5 mL of acetonitrile to fully dissolve, and obtain light-colored clear solution B;

[0031] 3). Slowly add solution B to solution A, and react at room temperature for 1 hour to obtain solution C. Solution C is evaporated under reduced pressure, washed with water, and dried at 60°C to obtain a light-colored powder, which is the rare earth luminescent material Eu(TTA) 3 (QPO) in 74% yield.

[0032] For rare earth luminescent material Eu(TTA) 3 (QPO) pure samples were subjected to a series of characterization and performance tests. The polycrystalline powder of the material of the p...

Embodiment 2

[0034] Rare earth luminescent material Eu(TTA) 3 (QPO) single crystal growth and characterization:

[0035] Take a small amount of Eu(TTA) 3 (QPO) pure sample powder, dissolved with dichloromethane to obtain a saturated solution S, in turn add solution S, dichloromethane and n-hexane equal volume mixed solution, n-hexane (the volume ratio of the three is 1:1.5:1) ). After standing still for several days, a yellow transparent block crystal was obtained, and a single crystal with a size of 0.39mm×0.32mm×0.28mm was picked for X-ray single crystal diffraction, and Eu(TTA) was obtained by analysis 3 (QPO) molecular structure. The molecular structure of the compound is shown in the appendix figure 1 .

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Abstract

The invention discloses a rare earth complex red fluorescent material and a preparation method and application thereof, relates to a rare earth luminescent material, and particularly relates to a preparation method and application of the rare earth luminescent material. The complex is a luminescent material with good performance, and the molecular formula is as follows: Eu(TTA)3(QPO), wherein TTA is alpha-thenoyl trifluoroacetone, and QPO is 2-(2-benzoxazole) quinoline]. The luminescent material is prepared from rare earth nitrate, three equivalent weight of alpha-thenoyl trifluoroacetone and one equivalent weight of 2-(2-benzoxazole) quinoline ligand through complexing reaction. The preparation method comprises specific steps of carrying out reaction on the rare earth nitrate, alpha-thenoyl trifluoroacetone and 2-(2-benzoxazole) quinoline according to stoichiometric ratio of 1:3:1 in acetonitrile and sodium hydroxide water solution, evaporating the obtained clear mixed solution at reduced pressure, then scrubbing with water, and drying so as to obtain a target product. The complex has good dissolving property, high luminous efficiency, and good thermal stability, and can be used in the field of photoluminescence or electroluminescence.

Description

technical field [0001] The invention relates to the field of rare earth luminescent materials, in particular to the field of rare earth complex luminescent materials. Background technique [0002] Because of the special outer electronic structure, rare earth elements have many unique properties, and have been widely used in electronics, petrochemicals, metallurgy, machinery, and energy. Light industry, environmental protection, agriculture and other fields. Rare earth ions are widely used in optical, electrical and magnetic fields, and are known as a treasure house of new materials. In the development of rare earth materials, especially the characteristics of luminescence attract attention. China has the most abundant rare earth resources in the world, and the variety is complete, which provides a huge guarantee for the research, application and production of rare earth complex materials. In recent years, the field of rare earth application has become more and more extens...

Claims

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Application Information

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IPC IPC(8): C09K11/06C07F5/00
Inventor 柴文祥张小丽王建腾夹国华史宏声徐凯杰黄绵吉秦来顺范美强陶晓栋郭驾宇舒康颖
Owner CHINA JILIANG UNIV
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