Organic-inorganic hybridized fluorescence nanoparticles capable of emitting color light as well as preparation method thereof

A technology of inorganic nanoparticles and fluorescent nanometers, which is applied in chemical instruments and methods, nanotechnology, nano-optics, etc., can solve the problems of complex synthesis methods, poor optical properties, and long preparation cycles, and achieve high luminous intensity and shortened impurity removal cycle, the effect of short preparation cycle

Inactive Publication Date: 2018-05-18
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with organic fluorescent dyes and inorganic quantum dots, the method of the present invention has the advantages of simple synthesis, and the particles of the present invention have good hydrophilicity, strong biocompatibility, high and stable luminescence performance, easy functionalization, non-toxicity, and no environment Pollution and other advantages, so that the above-mentioned organic-inorganic hybrid fluorescent nanoparticles solve the problems of complex synthesis methods, long preparation cycle, poor optical properties, high toxicity, and large pollution of existing fluorescent nanoparticles

Method used

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  • Organic-inorganic hybridized fluorescence nanoparticles capable of emitting color light as well as preparation method thereof
  • Organic-inorganic hybridized fluorescence nanoparticles capable of emitting color light as well as preparation method thereof
  • Organic-inorganic hybridized fluorescence nanoparticles capable of emitting color light as well as preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0023] Preparation of Blue Luminescent Organic-Inorganic Hybrid Fluorescent Nanoparticles

[0024] A blue-emitting organic-inorganic hybrid fluorescent nanoparticle, including monodisperse silica nanoparticles and carbon dots, see figure 1 .

[0025] (1) Preparation of monodisperse silica nanoparticles: first mix 2.45mL tetraethyl orthosilicate and 50mL absolute ethanol, then mix 3.00mL deionized water, 3.85mL ammonia water, and 40mL absolute ethanol. The above two solutions were mixed at room temperature under magnetic stirring, and the reaction was continuously stirred for 20 hours. After the reaction, it was washed three times by centrifugation with ethanol. Among them, the size standard deviation of inorganic nanoparticles between 30-100nm is 10-15%; the size standard deviation of inorganic nanoparticles between 100-200nm is 8-15%; the size standard deviation of inorganic nanoparticles between 200-280nm The size standard deviation is 6-15%.

[0026] (2) Preparation of ...

Embodiment 2

[0030] Preparation of Green Luminescent Organic-Inorganic Hybrid Fluorescent Nanoparticles

[0031] (1) Preparation of monodisperse silica nanoparticles: first mix 2.23mL tetraethyl orthosilicate and 50mL absolute ethanol, and then mix 2.82mL deionized water, 3.85mL ammonia water, and 40mL absolute ethanol. The above two solutions were mixed at room temperature under magnetic stirring, and the reaction was continuously stirred for 20 hours. After the reaction, it was washed three times by centrifugation with ethanol. Among them, the size standard deviation of inorganic nanoparticles between 30-100nm is 10-15%; the size standard deviation of inorganic nanoparticles between 100-200nm is 8-15%; the size standard deviation of inorganic nanoparticles between 200-280nm The size standard deviation is 6-15%.

[0032] (2) Preparation of organic-inorganic hybrid fluorescent nanoparticles: mix the silica nanoparticles obtained in (1) with 20 mg p-phenylenediamine, 10 mg sodium lignosul...

Embodiment 3

[0036] Preparation of Red Luminescent Organic-Inorganic Hybrid Fluorescent Nanoparticles

[0037] (1) Preparation of monodisperse silica nanoparticles: first mix 2.23mL tetraethyl orthosilicate and 50mL absolute ethanol, then mix 2.64mL deionized water, 3.85mL ammonia water, and 40mL absolute ethanol. The above two solutions were mixed at room temperature under magnetic stirring, and the reaction was continuously stirred for 20 hours. After the reaction, it was washed three times by centrifugation with ethanol. Among them, the size standard deviation of inorganic nanoparticles between 30-100nm is 10-15%; the size standard deviation of inorganic nanoparticles between 100-200nm is 8-15%; the size standard deviation of inorganic nanoparticles between 200-280nm The size standard deviation is 6-15%.

[0038] (2) Preparation of organic-inorganic hybrid fluorescent composite nanoparticles: Mix the silica nanospheres obtained in (1) with 10 mL of citric acid and 20 mg of 1,5-diaminona...

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Abstract

The invention provides organic-inorganic hybridized fluorescence nanoparticles capable of emitting color light as well as a preparation method thereof. The luorescence nanoparticles contain inorganicnanoparticles and organic fluorescence carbon points; the carbon points are attached to the surfaces of the inorganic nanoparticles; the particle size of the inorganic nanoparticles is between 30 nm and 280 nm and the mass ratio is between 95 percent and 99.5 percent; the particle size of the carbon points is between 2 nm and 6 nm and the mass ratio is between 0.5 percent and 5 percent; and blue,green or red fluorescence can be emitted under the irradiation of ultraviolet light. The preparation method provided by the invention is simple and short in cycle; and the nanoparticles are bright inlight-emitting color, high in light-emitting intensity, high in light-emitting stability and non-toxic, and avoid environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of fluorescent nanometer materials. Background technique [0002] At present, fluorescent nanoparticles have been widely used in the fields of chemical sensors, optical materials, optoelectronic devices, and biological detection and identification. Fluorescent nanoparticles include single luminescent nanoparticles such as quantum dots, up-conversion nanoparticles, etc., and fluorescent substances such as organic fluorescent dyes or quantum dots are introduced into organic or inorganic nanoparticles to form a composite fluorescent nanomaterial. Compared with traditional organic fluorescent dyes, fluorescent nanoparticles have higher brightness and photostability, and can more easily achieve water dispersibility and biocompatibility. In addition, the size of nanoparticles can be precisely controlled and easily functionalized to meet the requirements of their applications in the fields of chemistry, biology, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/06C09K11/59C09K11/67C09K11/60B82Y40/00B82Y20/00
CPCB82Y20/00B82Y40/00C09K11/02C09K11/06C09K11/592C09K11/602C09K11/671
Inventor 王建颖马晓飞李金华梅涛王贤保
Owner HUBEI UNIV
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