Rare-earth double-doped functional nanocomposite material and preparation method thereof

A technology of functional nano and composite materials, which is applied in the field of rare earth double-doped functional nano-composite materials and its preparation, can solve the problem of low fluorescence intensity of single doping, achieve simple preparation routes, easy industrialization promotion, and expand the scope of application Effect

Inactive Publication Date: 2019-02-12
GUIYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The first object of the present invention is to provide a kind of preparation method of rare earth double-doped functional nanocomposite material, and this method is to Gd 2 o 3 Incorporation of Tb into the matrix 3+ 、Eu 3+ Two kinds of lanthanide io

Method used

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  • Rare-earth double-doped functional nanocomposite material and preparation method thereof
  • Rare-earth double-doped functional nanocomposite material and preparation method thereof
  • Rare-earth double-doped functional nanocomposite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0058] A method for preparing a rare earth double-doped functional nanocomposite material, the method steps are as follows:

[0059] (1) Rare earth chloride salt GdCl 3 and TbCl 3 , EuCl 3 Add it to a certain amount of diethylene glycol according to a certain concentration ratio to prepare a precursor solution.

[0060] 1.6771g of GdCl 3 ·6H 2 O, 0.0896 g TbCl 3 ·6H 2 O, 0.0176g EuCl 3 ·6H 2 O mixed and placed in a round bottom flask, dissolved with 200mL diethylene glycol (DEG), and magnetically stirred at room temperature for 12h until the rare earth chloride mixed solution was uniformly dissolved. Then according to the 1:3 chemical reaction equivalent ratio of rare earth elements and lye, prepare in advance and dissolve 0.5760g NaOH in 200mL of DEG solution, then add the lye into the rare earth chloride solution, and stir for 6 hours to synthesize suspended Gd 2 o 3 :Tb 3+ 、Eu 3+ A colloidal transparent solution of nanoparticles a;

[0061] (2) The coating mixe...

Embodiment 2

[0064] A method for preparing a rare earth double-doped functional nanocomposite material, the method steps are as follows:

[0065] ((1) rare earth chloride salt GdCl 3 and TbCl 3 , EuCl 3 Add it to a certain amount of diethylene glycol according to a certain concentration ratio to prepare a precursor solution.

[0066] GdCl with a weighing mass of 1.6593g 3 ·6H 2 O, 0.0896g TbCl 3 ·6H 2 O, 0.0352 g EuCl 3 ·6H 2 O was mixed in a molar ratio of 93:5:2 and placed in a round bottom flask, dissolved with 200mL DEG, and magnetically stirred at room temperature for 12h until the rare earth chloride mixed solution was uniformly dissolved. Then according to the 1:3 chemical reaction equivalent ratio of rare earth elements and lye, prepare in advance and dissolve 0.5760g NaOH in 200mL of DEG solution, then add the lye into the rare earth chloride solution, and stir for 6 hours to synthesize suspended Gd 2 o 3 :Tb 3+ 、Eu 3+ A colloidal transparent solution of nanoparticles ...

Embodiment 3

[0070] A method for preparing a rare earth double-doped functional nanocomposite material, the method steps are as follows:

[0071] (1) Rare earth chloride salt GdCl 3 and TbCl 3 , EuCl 3 Add it to a certain amount of diethylene glycol according to a certain concentration ratio to prepare a precursor solution. Will weigh the mass to 1.6414g GdCl 3 ·6H 2 O,0.0896gTbCl 3 ·6H 2 O, 0.0528gEuCl 3 ·6H 2 O was mixed in a molar ratio of 92:5:3 and placed in a round bottom flask, dissolved with 200mL DEG, and magnetically stirred at room temperature for 12h until the rare earth chloride mixed solution was uniformly dissolved. Then according to the 1:3 chemical reaction equivalent ratio of rare earth elements and lye, prepare in advance and dissolve 0.5760g NaOH in 200mL of DEG solution, then add the lye into the rare earth chloride solution, and stir for 6 hours to synthesize suspended Gd 2 o 3 :Tb 3+ 、Eu 3+ A colloidal transparent solution of nanoparticles a;

[0072] (2...

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Abstract

The invention provides a rare-earth double-doped functional nanocomposite material and a preparation method thereof. The method comprises the process that a sodium hydroxide solution is added into a rare earth ion solution containing gadolinium chloride, europium chloride and terbium chloride; stirring reaction is performed to obtain a colloidal transparent solution; the solvents of the rare earthion solution and the sodium hydroxide solution are polylol, so that the colloidal transparent solution and coating liquid react under heating condition; transparent suspension with a core-shell structure is obtained; the coating liquid contains 3-aminopropyl triethoxysilane, tetraethyl orthosilicate, water, triethylamine and polylol; impurities in the transparent suspension with the core-shell structure are removed; vacuum drying is performed; then, calcination is performed to obtain a product. Tb<3+> and Eu<3+> lanthanide ions are doped into a Gd2O3 substrate; crystal nucleuses are subjectedto organic polysiloxane layer coating; the problem of low Gd2O3 single-doped fluorescence intensity is solved; the biocompatibility of the material is also improved; the fluorescence lifetime is prolonged.

Description

technical field [0001] The invention relates to the field of nanometer materials, in particular to a rare earth double-doped functional nanocomposite material and a preparation method thereof. Background technique [0002] Traditional bioprobes are based on radioisotope labeling and fluorophore labeling. The biggest disadvantage of labeling with radioactive isotopes is that there are radioactive pollutants, which are harmful to human health. The disadvantages of using fluorescent dyes as labels are: in order to facilitate the attachment of biomolecules, functionalized fluorophores must be synthesized separately; the sensitivity of fluorophore labels is not high, and identifiable signals can only be obtained at relatively high concentrations ; and fluorescent markers are prone to photobleaching. [0003] The size and microstructure of rare earth luminescent materials with special morphology have an important influence on their properties and applications. Therefore, rare ea...

Claims

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Application Information

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IPC IPC(8): C09K11/78C09K11/02B82Y20/00B82Y30/00B82Y40/00A61K49/00
CPCA61K49/0019B82Y20/00B82Y30/00B82Y40/00C09K11/025C09K11/7787
Inventor 杨春林欧梅桂
Owner GUIYANG UNIV
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