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Preparation method of europium-bonded fluorescent nano silica microsphere through light curing

A nano-silicon dioxide and silicon dioxide technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of complex preparation process, easy environmental pollution, cumbersome and other problems, and achieve the effect of overcoming the weak physical adsorption.

Inactive Publication Date: 2015-11-11
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing preparation method of rare earth-doped silica microspheres, such as cumbersome operation, complicated preparation process, and easy pollution of the environment, and provide a bond that is easy to operate, short in reaction time, and environmentally friendly. Photocuring Preparation Method of Conformed Rare Earth Fluorescent Nanospheres

Method used

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  • Preparation method of europium-bonded fluorescent nano silica microsphere through light curing
  • Preparation method of europium-bonded fluorescent nano silica microsphere through light curing
  • Preparation method of europium-bonded fluorescent nano silica microsphere through light curing

Examples

Experimental program
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Effect test

Embodiment 1

[0025] 1. Preparation of nano-silica microspheres adsorbed on the interface of organosiloxane

[0026] Add 0.2g of nano-silica microspheres (with a particle size of 400-500nm) and 0.1g of 3-propylmethacrylate trimethoxysilane into 30mL of absolute ethanol, ultrasonically disperse for 5 minutes, and place in a constant temperature culture shaker for oscillation Centrifuge for 3 hours (rotating at 200 rpm), and the obtained white precipitate is washed with ethanol and then dried to obtain silica microspheres adsorbed on the interface of 3-propylmethacrylate trimethoxysilane.

[0027] 2. Preparation of europium-bonded fluorescent nano-silica microspheres by ultraviolet light curing

[0028] Completely dissolve 0.1g of europium acrylate in 0.5mL of dimethyl sulfoxide, add 0.015g of 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, and disperse evenly by ultrasonication, then add the 3-methanol prepared in step 1 Silica microspheres adsorbed on the interface of propyl acrylate trime...

Embodiment 2

[0030] Step 1 of this example is the same as Step 1 of Example 1, preparing silica microspheres adsorbed at the interface of 3-propylmethacrylate trimethoxysilane. In step 2 of this example, dissolve 0.05 g of europium acrylate in 0.5 mL of dimethyl sulfoxide, add 0.015 g of 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, and disperse evenly by ultrasonication, then add The silica microspheres adsorbed on the interface of 3-propyl methacrylate trimethoxysilane prepared in step 1 were stirred evenly, and irradiated with ultraviolet light with a wavelength of 365nm for 10 minutes to obtain europium-bonded fluorescent nano-silica microspheres. ball.

Embodiment 3

[0032] In Examples 1-2, the 3-propyl methacrylate trimethoxysilane used was replaced with an equimolar vinyltrimethoxysilane; 2,4,6-trimethylbenzoyl-diphenyl oxidation The phosphine was replaced by equimolar ethyl 2,4,6-trimethylbenzoylphosphonate, and other steps were the same as in the corresponding examples to obtain europium-bonded fluorescent nano-silica microspheres.

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Abstract

The invention discloses a preparation method of europium-bonded fluorescent nano silica microsphere through light curing. The europium-bonded fluorescent nano silica microsphere is prepared by bonding europium acrylate to a nano silica microsphere matrix through a UV curing mode. Compared with the conventional preparation method, the provided preparation method has the advantages of simple operation, short reaction time, and environment-friendliness. The prepared europium-bonded fluorescent nano silica microsphere has a good thermal stability, is easy to process and mould, and has a wide application prospect in the field of biological fluorescence or medicine.

Description

technical field [0001] The invention belongs to the technical field of rare earth polymer composite luminescent materials, and in particular relates to a preparation method of europium-bonded fluorescent nano-silica microspheres cured by ultraviolet light. Background technique [0002] The emission spectrum distribution of rare earth ions is symmetrical, narrow in width, not easy to be photobleached, and has a long fluorescence lifetime, which has obvious advantages compared with traditional fluorescent molecules. In order to improve the light and thermal stability of rare earth complexes and expand the application of rare earth elements in the preparation of light conversion devices, organic light-emitting devices and other fields, the rare earth complexes are fixed on inorganic or organic / inorganic materials by sol-gel or hydrothermal methods. Hybridization on substrates becomes an alternative approach. There have been reports on the preparation of bonded rare earth fluor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08F220/06C08F2/48C09K11/02C09K11/06
Inventor 沈淑坤卢亚幸廖冰杨璐李雪菲毛正楠胡道道陈建刚
Owner SHAANXI NORMAL UNIV
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