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A hybrid luminescent material formed by embedding a terbium complex in inorganic nanoparticles and a preparing method thereof

A technology of inorganic nanoparticles and luminescent materials, applied in luminescent materials, chemical instruments and methods, etc., can solve the incompatibility between preparation methods and microstructures, restrict the practical application of rare earth complexes, and thermally stable organic complexes problems such as poor reproducibility, to achieve the effect of strong repeatability, uniform particle size and stable product

Inactive Publication Date: 2018-05-15
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, after research, it has been found that the organic complexes of rare earth ions have poor thermal stability, concentration self-quenching phenomenon is prone to occur at high concentrations, and the compatibility between the preparation method and the microstructure does not match. These problems restrict the rare earth complexes. Practical applications of complexes in photophysics

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  • A hybrid luminescent material formed by embedding a terbium complex in inorganic nanoparticles and a preparing method thereof

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Embodiment 1

[0028] A method for preparing an inorganic nanoparticle-embedded terbium complex hybrid luminescent material, comprising the following steps:

[0029] (1) Pour 50ml of absolute ethanol solution into a 100ml Erlenmeyer flask, add 3ml of ammonia solution with a concentration of 25%, and mix the two fully and evenly under the condition of 500r / min magnetic stirring, and record the resulting solution as the reaction Solution 2, measure SiO 2 1.5ml of tetraethyl orthosilicate solution with a content of 28% was slowly poured into the mixed solution of the reaction solution 2, and continued to react for 24 hours under the same magnetic stirring as the above-mentioned rotating speed to obtain a nano-silica solution;

[0030] (2) Place a rotor with a length of 1cm in a 50ml Erlenmeyer flask, weigh 0.5g of tetraterbium heptoxide and add it to the Erlenmeyer flask, then add 4ml of 30% hydrogen peroxide, and then dropwise add 6ml of concentrated The aqueous solution of hydrochloric acid ...

Embodiment 2

[0036] A method for preparing an inorganic nanoparticle-embedded terbium complex hybrid luminescent material, comprising the following steps:

[0037] (1) Pour 50ml of absolute ethanol solution into a 100ml Erlenmeyer flask, add 1ml of ammonia solution with a concentration of 25%, and mix the two fully and evenly under the condition of 500r / min magnetic stirring, and record the resulting solution as the reaction Solution 3, measure SiO 2 1.5ml of tetraethyl orthosilicate solution with a content of 28% was slowly poured into the mixed solution of the reaction solution 3, and continued to react for 24 hours under the same magnetic stirring as the above-mentioned rotating speed to obtain a nano-silica solution;

[0038] (2) Place a rotor with a length of 1cm in a 50ml Erlenmeyer flask, weigh 0.5g of tetraterbium heptoxide and add it to the Erlenmeyer flask, then add 4ml of 30% hydrogen peroxide, and then dropwise add 6ml of concentrated The aqueous solution of hydrochloric acid ...

Embodiment 3

[0044] A method for preparing an inorganic nanoparticle-embedded terbium complex hybrid luminescent material, comprising the following steps:

[0045] (1) Pour 50ml of absolute ethanol solution into a 100ml Erlenmeyer flask, add 4ml of ammonia solution with a concentration of 25%, and mix the two fully and evenly under the condition of 500r / min magnetic stirring, and record the resulting solution as the reaction Solution 4, measure SiO 2 Slowly pour 1.5 ml of tetraethyl orthosilicate solution with a content of 28% into the mixed solution of reaction solution 4, and continue to react for 24 hours under the magnetic stirring at the same rotational speed as above;

[0046] (2) Place a rotor with a length of 1cm in a 50ml Erlenmeyer flask, weigh 0.5g of tetraterbium heptoxide and add it to the Erlenmeyer flask, then add 4ml of 30% hydrogen peroxide, and then dropwise add 6ml of concentrated The aqueous solution of hydrochloric acid (the volume ratio of hydrochloric acid to water ...

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Abstract

A hybrid luminescent material formed by embedding a terbium complex in inorganic nanoparticles and a preparing method thereof are disclosed. The method includes preparing an ethanol solution of terbium chloride; reacting absolute ethyl alcohol, acetylacetone, 1,10-phenanthroline, and the ethanol solution of the terbium chloride to prepare an rear earth terbium organic complex solution; reacting absolute ethyl alcohol, aqueous ammonia and tetraethyl orthosilicate to prepare a nanometer silica solution; centrifuging a solution obtained after mixing and reacting the rear earth terbium organic complex solution and the nanometer silica solution; and then performing alcohol washing and drying steps to obtain the material. The method which is simple and easy to operate and used for preparing a photoluminescence material is disclosed. The hybrid luminescent material prepared by the method has a uniform particle size, can be uniformly dispersed in absolute ethyl alcohol, and has stable fluorescence properties.

Description

technical field [0001] The invention relates to the technical field of hybrid luminescent materials, in particular to a hybrid luminescent material in which inorganic nanoparticles embed small organic rare earth molecules and a preparation method thereof. Background technique [0002] In 1843, Mosander of Sweden discovered terbium through the study of yttrium. Most of the applications of terbium involve high-tech fields, which are knowledge-intensive and technology-intensive cutting-edge projects. Terbium phosphor can be used as an activator for blue powder in trichromatic phosphors, such as terbium-activated phosphate matrix, terbium-activated silicate matrix, and terbium-activated cerium-magnesium-aluminate matrix. Glows green. The time-resolved fluorescence energy transfer method developed centered on terbium can be used to design highly sensitive medical assays. However, the absorption coefficient of trivalent terbium ions is very low when excited by incident light (ε...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/06
CPCC09K11/025C09K11/06C09K2211/182
Inventor 王彦欣黄林军唐建国史建行王瑶王薇
Owner QINGDAO UNIV
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