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A preparation method of organic-inorganic hybrid fluorescent mesoporous silicon oxide nanomaterial

A technology of mesoporous silica and nanomaterials, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of high cost and complicated operation of metal salts, and achieve the effect of simple preparation process, high fluorescence intensity and good stability

Inactive Publication Date: 2017-07-07
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above fluorescent materials all support bipyridine and its derivatives by forming metal complexes, the operation is complicated and the cost of metal salts is high in the preparation process.

Method used

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  • A preparation method of organic-inorganic hybrid fluorescent mesoporous silicon oxide nanomaterial
  • A preparation method of organic-inorganic hybrid fluorescent mesoporous silicon oxide nanomaterial
  • A preparation method of organic-inorganic hybrid fluorescent mesoporous silicon oxide nanomaterial

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preparation example Construction

[0028] Such as figure 1 As shown, the present invention discloses a method for preparing an organic-inorganic hybrid fluorescent mesoporous silicon oxide nanomaterial, the method comprising:

[0029] S101, selecting a dual-model mesoporous silica nanomaterial with a dual-pore structure and controllable pore size as a carrier, and performing pretreatment;

[0030] S102. Mix the dual-model mesoporous silica nanomaterial with a dichloromethane solution containing organic fluorescent molecules. Dichloromethane is used as a solvent for dissolving the organic fluorescent molecules to ensure the dispersion of the organic fluorescent molecules in the dichloromethane solution. Condensation Reflux for 8 to 12 hours;

[0031] S103. After the reaction is completed, centrifuge, wash and dry to obtain organic-inorganic hybrid fluorescent mesoporous silicon oxide nanomaterials.

[0032] Further, the dual-model mesoporous silicon oxide nanomaterial has mesopores of 2-4 nm and spherical part...

Embodiment 1

[0046] Dissolve 2.61g of hexadecyltrimethylammonium bromide in 104g of distilled water, stir until dissolved, pipette 8mL of ethyl orthosilicate into the solution, add 2.4mL of freshly prepared ammonia water, stir until a white lump gel is produced, filter , washed, dried, and the resulting white powder was heated to 550° C. for 5 hours and calcined to obtain a dual-model mesoporous molecular sieve with 3 nm mesoporous pores and 16 nm spherical particle packing pores.

[0047] Take 0.3g of dual-model mesoporous molecular sieves in a 25mL round bottom flask, activate in vacuum at 120°C for 3h, add 3mL of dichloromethane solution containing 0.045g of organic fluorescent molecule Z1 (R group is L-proline), dichloromethane As a solvent for dissolving organic fluorescent molecules, ensure the dispersibility of organic fluorescent molecules in dichloromethane solution; heat up to 41°C to ensure that the dichloromethane solution boils, condense and reflux for 12 hours, centrifuge, was...

Embodiment 2

[0049] Using the experimental process of Example 1, the difference is that 3 mL of dichloromethane solution containing 0.0003 g of organic fluorescent molecules is added, and the resulting solid powder is the fluorescent mesoporous silica nanomaterial Z1-BMMs-0.1, and its fluorescence peak is located at at 491nm.

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Abstract

The invention discloses a method for preparing an organic-inorganic hybrid fluorescent mesoporous silica nanometer material. The method comprises the following steps: selecting a dual model mesoporous silica nanometer material with a dual pore structure and a controllable pore size as a carrier, and performing pretreatment; mixing the treated dual model mesoporous silica nanometer material and a dichloromethane solution containing organic fluorescence molecules, and performing reflux condensation for 8-12 hours; and centrifuging, washing and drying after the reaction is finished, thereby obtaining the organic-inorganic hybrid fluorescent mesoporous silica nanometer material. According to the method for preparing the organic-inorganic hybrid fluorescent mesoporous silica nanometer material, disclosed by the invention, the preparation process is simple, the cost is low, and the operation is simple and convenient. Moreover, the prepared organic-inorganic hybrid fluorescent mesoporous silica nanometer material has the advantages of high dispersity, uniform nanometer size, adjustable pore diameter, high fluorescence intensity and high stability.

Description

technical field [0001] The invention relates to the field of fluorescent nanometer materials, in particular to a method for preparing an organic-inorganic hybrid fluorescent mesoporous silicon oxide nanometer material. Background technique [0002] Mesoporous material is a new type of nanoporous material developed in the early 1990s. It uses surfactant molecular aggregates as templates and assembles inorganic porous materials with regular and orderly pore structures through the interface interaction between organic and inorganic substances. Material. The synthesis and application of mesoporous materials have become one of the research hotspots due to their large specific surface area and pore volume, controllable morphology, regular pore structure, surface containing a large number of hydroxyl groups (-OH) and easy functionalization. . Mesoporous materials with fluorescent properties have broad application prospects in drug sustained release, disease diagnosis, analysis an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06C09K11/02
Inventor 唐志云孙继红赵洪武白诗扬武霞
Owner BEIJING UNIV OF TECH
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