Inorganic silica/organic nano-particle core-shell structure preparation method

A silicon dioxide and particle core technology, applied in the field of microparticles, can solve problems such as weakening luminescence properties, and achieve the effects of increased dye loading, simple and easy operation, and mild reaction process.

Active Publication Date: 2013-08-21
SUZHOU UNIV
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  • Abstract
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Problems solved by technology

However, the luminescent properties of unmodified fluorescent nanoparticles are easily weakened by the surrounding solvent environment.

Method used

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  • Inorganic silica/organic nano-particle core-shell structure preparation method
  • Inorganic silica/organic nano-particle core-shell structure preparation method
  • Inorganic silica/organic nano-particle core-shell structure preparation method

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Embodiment Construction

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0032] see figure 1 , figure 2 Shown, a kind of preparation method of inorganic silica / organic nanoparticle core-shell structure comprises the following steps:

[0033] Step 1) Dissolve bis-naphthylaniline benzenebutene dinitrile in tetrahydrofuran to form an organic fluorescent dye molecular solution, take an appropriate volume of the organic fluorescent dye molecular solution and add it to an appropriate amount of water, the volume ratio of tetrahydrofuran to water is 1: 20. The volume of tetrahydrofuran is 150 μL, the reaction temperature is 0°C, the magnetic force is stirred for 5 minutes and then left to stand to obtain the precursor nanoparticle suspension;

[0034] Step 2) Add 50 mg of cetyltrimethylammonium bromide into 30 mL of the precursor nanoparticle suspension, and then magnetically stir for 30 minutes to obtain micr...

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Abstract

The present invention discloses an inorganic silica / organic nano-particle core-shell structure preparation method, wherein a surfactant hexadecyl trimethyl ammonium bromide is adopted to stabilize nano-particles, and is adopted as template for porous silica shell layer forming, and a silane coupling agent is subjected to hydrolysis compression at the template position under an alkaline environment so as to achieve coating of inorganic porous silica on the surface of organic nanoparticles. According to the present invention, a thin layer silicon shell is introduced to the surface of organic nanoparticles, such that the surface modification operation is diversified; the preparation method has a universality characteristic, and is applicable for a series of hydrophobic fluorescence dyes; and the preparation method has characteristics of simple and easy-performing operation process, good repeatability, mild reaction process and universality so as to provide promotion use values.

Description

technical field [0001] The invention belongs to the field of microparticles, and in particular relates to a method for preparing an inorganic silicon dioxide / organic nanoparticle core-shell structure. Background technique [0002] The surface modification and functionalization of nanomaterials is an emerging research field. At present, many groups are focusing on the surface modification and functionalization of various nanomaterials. Many inorganic nanomaterials have obtained many novel and excellent properties through various surface modification methods. For example, modifying silver nanoparticles on silicon nanowires can detect various substances through Raman enhancement; modifying platinum nanoparticles on the outer layer of silicon nanoarrays can enhance the efficiency of solar cells; modifying a layer on a polymer carrier The gold shell can use the photothermal effect of gold to realize the synergistic treatment of chemotherapy and hyperthermia. [0003] Organic na...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02
Inventor 张秀娟郝小军
Owner SUZHOU UNIV
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