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Preparation method of nanoparticles capable of being heated and measuring temperature

A technology of nanoparticles and gold nanoparticles, which is applied in the field of preparation of dual-functional nanoparticles of heating and temperature measurement, to achieve the effects of good dispersion, convenient and easy-to-obtain raw materials, and simple experimental equipment

Inactive Publication Date: 2016-03-23
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for creation of two types of particles that have both heating capabilities and temperature measurements. These particles consist mainly made from different sources like SiO2 or gold sandwiches between layers of germanenium oxides (GSO). They also contain platinum(II) sulfate quantum dots embedded within them. By adjusting certain parameters such as pH value, concentration, type of solvents involved during synthesis, they were able to produce these particles with excellent properties including high dispersity at room temperatures while maintaining their circular shape when exposed to specific conditions.

Problems solved by technology

The technical problem addressed in this patents relates to how to prepare special types of material for use in applications like medicine or biology where light has specific effects (such as fluorescent emission) from these particles.

Method used

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  • Preparation method of nanoparticles capable of being heated and measuring temperature
  • Preparation method of nanoparticles capable of being heated and measuring temperature
  • Preparation method of nanoparticles capable of being heated and measuring temperature

Examples

Experimental program
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Embodiment 1

[0027] A preparation method for heating and measuring dual-functional nanoparticles, characterized in that: comprising the following steps:

[0028] 1) Preparation of photothermal conversion heating silica / gold particles:

[0029] 1.1) Preparation of silica core particles: Add absolute ethanol, ammonia water with a volume concentration of 10% and ethyl orthosilicate to the reaction vessel according to the volume ratio of 10:1:0.44, and mix and stir for 8 hours to obtain the silica core particles. Silicon core particles;

[0030] 1.2) Amination modification of silica core particles: After the silica core particles obtained in step 1.1) are centrifuged and washed 3 times with absolute ethanol, they are dispersed in an equal volume of absolute ethanol, and then the silica core particles are The particle solution and (3-aminopropyl)trimethoxysilane were mixed according to the volume ratio of 1250:1, and kept stirring for 1h, then the mixed solution was placed in a water bath at 7...

Embodiment 2

[0043] A preparation method for heating and measuring dual-functional nanoparticles, characterized in that: comprising the following steps:

[0044] 1) Preparation of photothermal conversion heating silica / gold particles:

[0045] 1.1) Preparation of silica core particles: add absolute ethanol, ammonia water with a volume concentration of 10% and ethyl orthosilicate to the reaction vessel at a volume ratio of 10:1:0.44, mix and stir for 8 hours to obtain di Silica core particles;

[0046] 1.2) Amination modification of silica core particles: After the silica core particles obtained in step 1.1) are centrifuged and washed 3 times with absolute ethanol, they are dispersed in an equal volume of absolute ethanol, and then the silica core particles are The particle solution and (3-aminopropyl)trimethoxysilane were mixed according to the volume ratio of 1250:1, and kept stirring for 1h, then the mixed solution was placed in a water bath at 70°C for 2h, and finally washed with absol...

Embodiment 3

[0056] A preparation method for heating and measuring dual-functional nanoparticles, characterized in that: comprising the following steps:

[0057] 1) Preparation of photothermal conversion heating silica / gold particles:

[0058] 1.1) Preparation of silica core particles: add absolute ethanol, ammonia water with a volume concentration of 10% and ethyl orthosilicate to the reaction vessel at a volume ratio of 10:1:0.44, mix and stir for 8 hours to obtain di Silica core particles;

[0059] 1.2) Amination modification of silica core particles: After the silica core particles obtained in step 1.1) are centrifuged and washed 3 times with absolute ethanol, they are dispersed in an equal volume of absolute ethanol, and then the silica core particles are The particle solution and (3-aminopropyl)trimethoxysilane were mixed according to the volume ratio of 1250:1, and kept stirring for 1h, then the mixed solution was placed in a water bath at 70°C for 2h, and finally washed with absol...

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Abstract

A preparation method of nanoparticles capable of being heated and measuring temperature includes the steps that firstly, after amination modification is performed on silica nuclear particles, gold nanoparticles are adsorbed, formaldehyde is added into a gold hydroxide aqueous solution to serve as a reduction agent, a redox reaction happens, and a gold shell is formed; the surfaces of the silica/gold double-layer core-shell particles are wrapped and modified by polyvinylpyrrolidone, and a silicon source and a catalyst are added to prepare silica/gold/silica three-layer composite nanoparticles; cadmium chloride and sodium tellurite serve as a cadmium source and a tellurium source respectively, and temperature-sensitive cadmium telluride quantum dots are compounded in a water phase with sodium borohydride as a reducing agent; amination modification is performed on the surfaces of the silica/gold/silica three-layer composite nanoparticles, then the cadmium telluride quantum dots are adsorbed, and the silica/gold/silica/ cadmium telluride four-layer nanoparticles capable of being heated and measuring temperature are obtained. The technological process is easy to master, and the dual-function nanoparticles which are good in dispersing performance and uniform in particle size can be prepared.

Description

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Claims

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Application Information

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Owner XI AN JIAOTONG UNIV
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