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Stannous sulfide nanometer photo-thermal agent and preparation method thereof

A stannous sulfide and nano-light technology, which is applied in nano-medicine, nano-technology, nano-technology, etc., can solve the problems of ineffective photothermal treatment of precious metal photothermal agents, limiting the market application of precious metal photothermal agents, and complicated preparation processes. , to achieve the effect of abundant raw materials, obvious photothermal effect and simple preparation process

Inactive Publication Date: 2018-06-19
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these photothermal agents have their own shortcomings. The photothermal properties of gold and other precious metals mainly come from the surface plasmon resonance effect, and this effect is affected by the surface morphology, size, and dielectric constant of the surrounding medium. The impact is so great that the actual photothermal treatment effect of noble metal photothermal agents is not obvious; in addition, the high price also limits the market application of noble metal photothermal agents
However, carbon materials have disadvantages such as complicated preparation process and low absorption coefficient at 808nm.

Method used

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  • Stannous sulfide nanometer photo-thermal agent and preparation method thereof
  • Stannous sulfide nanometer photo-thermal agent and preparation method thereof
  • Stannous sulfide nanometer photo-thermal agent and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] A preparation method of stannous sulfide nano photothermal agent, comprising the following steps:

[0032] (1) After grinding the stannous sulfide block for 30 minutes, disperse it in isopropanol to obtain a dispersion with a concentration of 1 mg / mL;

[0033] (2) Ultrasonic the above-mentioned dispersion liquid with a probe for 5 hours, the probe power of the probe ultrasonic is 360w, and the temperature of the probe is kept at 5-20°C during the ultrasonic process, and when the temperature rises during the period, use an ice pack to cool down;

[0034] (3) Ultrasonic the dispersion liquid in the water bath for 10 hours to obtain the ultrasonic dispersion liquid. The temperature of the water bath ultrasonic wave is kept at 15-25°C. Within the range of 25°C;

[0035] (4) After centrifuging the ultrasonically dispersed dispersion, centrifuge at a speed of 5000 rpm for 0.5 h, take the supernatant, then centrifuge the supernatant at a speed of 17000 rpm for 0.5 h, collect ...

Embodiment 2

[0039] A preparation method of stannous sulfide nano photothermal agent, comprising the following steps:

[0040] (1) After grinding the stannous sulfide block for 40 minutes, disperse it in nitrogen methyl pyrrolidone to obtain a dispersion with a concentration of 1 mg / mL;

[0041] (2) Ultrasonic the above-mentioned dispersion liquid with a probe for 6 hours, the probe power of the probe ultrasonic is 360w, and the temperature of the probe is maintained at 10-15°C during the ultrasonic process, and when the temperature rises during the period, use an ice pack to cool down;

[0042] (3) Ultrasonic the dispersion in the water bath for 12 hours to obtain the ultrasonic dispersion. The temperature of the ultrasonic water bath is kept at 15-25°C. When the temperature of the water bath rises, the water bath temperature is kept at 15-25°C Within the range of 25°C;

[0043] (4) After centrifuging the ultrasonically dispersed dispersion, centrifuge at a speed of 4000 rpm for 1 h, tak...

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Abstract

The invention provides a stannous sulfide nanometer photo-thermal agent. The stannous sulfide nanometer photo-thermal agent is prepared from a stannous sulfide nanometer sheet, and polyethylene glycolamine, wherein the polyethylene glycol amine is covered to the surface of the stannous sulfide nanometer sheet. The stannous sulfide nanometer photo-thermal agent has the advantages that the photo-thermal effect is obvious, the chemical stability is high, the toxicity is low, the rich raw materials are provided, the prices are low, the preparation method is simple, and the application prospect isbroad in the field of photo-thermal treatment. The invention also provides a preparation method of the stannous sulfide nanometer photo-thermal agent.

Description

technical field [0001] The invention relates to the technical field of nano photothermal agents, in particular to a stannous sulfide nano photothermal agent and a preparation method thereof. Background technique [0002] In recent years, photothermal therapy, as a new type of cancer therapy, has attracted widespread attention. It mainly uses photothermal agents to generate local high temperature under the irradiation of 808nm laser to kill cancer cells, with few side effects and high efficiency. [0003] At present, more photothermal agents have been studied, including precious metals such as gold, silver, and platinum, and carbon materials such as graphene, graphene oxide, and carbon nanorods. However, these photothermal agents have their own shortcomings. The photothermal properties of gold and other precious metals mainly come from the surface plasmon resonance effect, and this effect is affected by the surface morphology, size of the nanostructure, and the dielectric con...

Claims

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Application Information

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IPC IPC(8): A61K41/00A61K9/51A61K47/18A61P35/00
CPCA61K9/5146A61K41/0052A61K47/18B82Y5/00
Inventor 张晗范涛健谢中建
Owner SHENZHEN UNIV
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