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Preparation method of rare earth hydrotalcite-like compound/polymer nanocomposite

A nanocomposite material and technology of hydrotalcite, applied in the field of exfoliated fluorescent rare earth hydrotalcite/polymer nanocomposite material and its preparation, can solve the problem of concentration quenching, rare earth complex light, poor thermal stability, poor dispersibility, etc. problems, to achieve the effect of simple equipment, preventing fluorescence quenching, and improving thermal stability

Inactive Publication Date: 2012-11-28
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, rare earth complexes have inherent defects of poor light and thermal stability, and poor dispersion, which is prone to concentration quenching effect

Method used

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  • Preparation method of rare earth hydrotalcite-like compound/polymer nanocomposite
  • Preparation method of rare earth hydrotalcite-like compound/polymer nanocomposite
  • Preparation method of rare earth hydrotalcite-like compound/polymer nanocomposite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1. Weigh 0.16g NaAlO 2 , 0.08 gram of NaOH are dissolved in deionized water together, this is solution A;

[0037] 2. Weigh 0.5 g of MgCl 2 Dissolved in deionized water, this is solution B;

[0038] 3. Weigh 0.011 grams of Eu 2 o 3 , dissolved in dilute hydrochloric acid and added to solution B, this is solution C;

[0039] 4. Weigh 0.035 grams of thienoyl trifluoroacetone and 0.01 grams of 1,10-phenanthroline respectively, dissolve them in absolute ethanol and pour them into an aqueous solution containing 0.28 grams of sodium stearate to prepare a mixed slurry d.

[0040] 5. Under strong stirring, simultaneously add solution A and solution C dropwise to mixed slurry D to prepare mixed slurry E, adjust mixed slurry E to pH = 12 with 20% sodium hydroxide aqueous solution, and age at 80°C After 6 hours, filter with suction and wash the filter cake with water until the pH of the filtrate = 7.5, soak with a small amount of absolute ethanol, wash the precipitate, and t...

Embodiment 2

[0046] 1. Weigh 0.05g NaAlO 2 , 0.025 gram of NaOH are dissolved in deionized water together, this is solution A;

[0047] 2. Weigh 0.14 g of MgCl 2 Dissolved in deionized water, this is solution B;

[0048] 3. Weigh 0.03 g of Tb 4 o 7 , dissolved in dilute hydrochloric acid and added to solution B, this is solution C;

[0049] 4. Weigh 0.05 g of acetylacetone and 0.02 g of 2,2-bipyridine respectively, dissolve them in absolute ethanol and pour them into an aqueous solution containing 0.15 g of sodium stearate to prepare a mixed slurry D.

[0050] 5. Under the action of continuous ultrasonic waves, add solution A and solution C dropwise to mixed slurry D to prepare mixed slurry E. Use 20% sodium hydroxide aqueous solution to adjust mixed slurry E to pH = 10, and age at 70°C After 6 hours, filter with suction and wash the filter cake with water until the pH of the filtrate = 7.5, soak it with a small amount of absolute ethanol, wash the precipitate and then filter with suc...

Embodiment 3

[0053] 1. Weigh 1.36 grams of NaAlO 2 , 0.68 gram of NaOH are dissolved in deionized water together, this is solution A;

[0054] 2. Weigh 4.75 grams of MgCl 2 Dissolved in deionized water, this is solution B;

[0055] 3. Weigh 0.18 grams of Sm 2 o 3 , dissolved in dilute hydrochloric acid and added to solution B, this is solution C;

[0056] 4. Weigh 0.8 g of naphthoyl trifluoroacetone and 0.16 g of 2,2-bipyridine respectively, dissolve them in absolute ethanol and pour them into an aqueous solution containing 3.2 g of sodium stearate to prepare a mixed slurry D.

[0057] 5. Under strong stirring, simultaneously add solution A and solution C dropwise to mixed slurry D to prepare mixed slurry E, adjust mixed slurry E to pH = 13 with 20% sodium hydroxide aqueous solution, and age at 60°C After 6 hours, filter with suction and wash the filter cake with water until the pH of the filtrate = 8, soak with a small amount of absolute ethanol, wash the precipitate and then filter ...

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Abstract

The invention relates to a rare earth hydrotalcite-like compound / polymer nanocomposite and a preparation method thereof. The method comprises the following steps: firstly prefabricating: dissolving sodium metaaluminate and sodium hydroxide in deionized water to prepare a solution A, dissolving magnesium chloride in deionized water to prepare a solution B, dissolving rare earth oxide with dilute hydrochloric acid and then putting them into the solution B to prepare a solution C, and dissolving a single ligand or a mixed ligand in sodium stearate to prepare a mixed slurry D; then under the action of strong stirring or ultrasonic wave, simultaneously adding the solution A and the solution C dropwisely in the mixed slurry D to prepare a mixed slurry E, aging, conducting pumping filtration, drying the filter cake to obtain a bright fluorescent rare earth hydrotalcite-like compound; and immersing the rare earth hydrotalcite-like compound in a polymer monomer and initiator for 24 hours, and then conducting polymerization to obtain the nanocomposite. The materials disclosed herein has excellent luminescence property of original rare earth complex, and has the advantages of good formability, strong impact resistance, light weight, low cost, easiness in film formation and the like of organic polymer materials.

Description

technical field [0001] The invention belongs to the technical field of photoelectric materials. It specifically relates to a kind of exfoliated fluorescent rare earth hydrotalcite / polymer nanocomposite material and a preparation method thereof, and relates to the application of this type of material in the fields of photoluminescence, electroluminescence and the like. technical background [0002] Rare earth metal complexes have excellent luminescent properties, narrow-band emission, and high luminous efficiency, which are extremely beneficial for the preparation of functional materials with high color purity. However, rare earth complexes have inherent defects of poor light and thermal stability, and poor dispersion, which is easy to produce concentration quenching effect. Doping can avoid the self-quenching process of rare earth complexes at high concentrations, and can also make up for the shortcomings of the complex itself by taking advantage of the host material's good...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F120/14C08F112/08C08F2/46C08G73/02C08K3/22C08K5/45C08K5/07C08K5/32C08K5/09C08K5/00C09K11/06
Inventor 凌启淡陈鸿章文贡
Owner FUJIAN NORMAL UNIV
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