Method for preparing europium-bonded fluorescent nano-silica microspheres by photocuring

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

Inactive Publication Date: 2017-12-05
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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  • Method for preparing europium-bonded fluorescent nano-silica microspheres by photocuring
  • Method for preparing europium-bonded fluorescent nano-silica microspheres by photocuring
  • Method for preparing europium-bonded fluorescent nano-silica microspheres by photocuring

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 Vibrate for 3 hours (rotating speed is 200rpm), centrifuge, and the obtained white precipitate is washed with ethanol and then dried to obtain silica microspheres adsorbed on the interface of 3-propyl methacrylate 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- Silica microspheres adsorbed on the interface of propyl methacrylate trimethoxysilane, stirred eve...

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 embodiment, 0.05g of europium acrylate was dissolved in 0.5mL of dimethyl sulfoxide, and 0.015g of 2,4,6-trimethylbenzoyl-diphenylphosphine oxide was added, and the ultrasonic dispersion was uniform, and then Add the silica microspheres adsorbed on the interface of 3-propyl methacrylate trimethoxysilane prepared in step 1, stir evenly, and irradiate with ultraviolet light with a wavelength of 365nm for 10 minutes to obtain europium-bonded fluorescent nano-silica Microspheres.

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 photocuring method for preparing europium-bonded fluorescent nano-silica microspheres. In the method, europium acrylate is bonded into the matrix of nano-silica microspheres through ultraviolet light curing to prepare europium-bonded fluorescent nano-silica microspheres. Fluorescent nano-silica microspheres. Compared with the traditional preparation method, the method of the present invention is simple to operate, short in reaction time, and environmentally friendly. The prepared europium-bonded fluorescent nano-silica microspheres have good thermal stability and are easy to process and form. The field has broad application prospects.

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 Patents(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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