Material and preparation method of bioimaging probe and oxygen reduction catalyst

A bioimaging and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, luminescent materials, etc., can solve problems such as the gap in catalytic ability, and achieve low production costs, easy mass production, and broad industrial application prospects. Effect

Inactive Publication Date: 2017-03-29
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But unfortunately, the catalytic ability of these catalysts is still somewhat inferior to that of metal platinum.

Method used

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  • Material and preparation method of bioimaging probe and oxygen reduction catalyst
  • Material and preparation method of bioimaging probe and oxygen reduction catalyst
  • Material and preparation method of bioimaging probe and oxygen reduction catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take 30 mL of N-methylpyrrolidone in a 50 mL round bottom flask and heat to 200°C for 3 hours. After the reaction was completed, the product was cooled, and the product was dialyzed in water for 3 days to remove the solvent. Finally, the product was frozen in liquid nitrogen, and then freeze-dried using a freeze dryer for 3 days to obtain quantum dot powder.

[0021] Take 0.5 g of quantum dot powder and place it in a tube furnace, heat it to 800° C. under the protection of argon for 2 hours, and cool it under the protection of argon to obtain a black lump.

[0022] From figure 1 It can be seen that the prepared carbon quantum dots have a very uniform size and very obvious lattice fringes, indicating that they have good crystallinity. From figure 2 It can be found that after the quantum dots are heated at high temperature, the product is macroscopically a blocky solid with metallic luster. From image 3 It can be seen from the figure that after the quantum dots are...

Embodiment 2

[0024] Take 50 mL of N-methylpyrrolidone in a 100 mL round bottom flask and heat to 90°C for 72 hours. After the reaction was completed, the product was cooled, and the product was dialyzed in water for 2 days to remove the solvent. Finally, the product was frozen in liquid nitrogen, and then freeze-dried for 4 days using a freeze dryer to obtain quantum dot powder.

[0025] Take 1 g of quantum dot powder and place it in a tube furnace, heat it to 1100° C. under the protection of argon for 1 hour, and cool it under the protection of argon to obtain a black lump.

Embodiment 3

[0027] Take 30 mL of N-methylpyrrolidone in a 100 mL round bottom flask and heat to 140°C for 6 hours. After the reaction was completed, the product was cooled, and the product was dialyzed in water for 2 days to remove the solvent. Finally, the product was frozen in liquid nitrogen, and then freeze-dried for 5 days using a freeze dryer to obtain quantum dot powder.

[0028] Take 1.5 g of quantum dot powder and place it in a tube furnace, heat it to 500° C. under the protection of argon for 6 hours, and cool it under the protection of argon to obtain a black blocky substance.

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Abstract

The invention belongs to the technical field of catalytic materials, in particular to a bioimaging probe and a material of an oxygen reduction catalyst and a preparation method thereof. According to the bioimaging probe and the material of the oxygen reduction catalyst and the preparation method thereof, carbon quantum dots which are uniform in size and provided with bright light blue fluorescence are obtained by heating specific solvent, and the carbon quantum dots serve as the biological cell imaging probe which is high in efficiency and low in toxicity; on the basis of the carbon quantum dots, the electron conduction efficiency of the carbon quantum dots is raised by conducting heating at a high temperature, the content of graphitized nitrogen in a carbon material is increased, and the catalytic activity of the material in the oxygen reduction process is finally improved. The method for heating the single solvent is adopted, the operation process is convenient, preparation conditions are extremely simple, the production cost is quite low, and the mass production is easy to conduct; the bioimaging probe and the material of the oxygen reduction catalyst and the preparation method thereof have a wide industrialized application prospect.

Description

technical field [0001] The invention belongs to the technical field of catalytic materials, and in particular relates to a material of a biological imaging probe and an oxygen reduction catalyst and a preparation method thereof. Background technique [0002] In 2008, Osamu Shimomura and others won the Nobel Prize in Chemistry for their discovery of the cell labeling effect of fluorescent proteins. In recent years, it has been discovered that a large number of quantum dots can replace fluorescent proteins as markers for cell imaging in the biological field. Compared with fluorescent proteins, quantum dots have a smaller particle size, which makes it easier to enter cells. However, traditional fluorescent quantum dots are mostly inorganic substances, which generally contain toxic metals such as cadmium, and thus have a very harmful effect on cells and organisms. With the development of scientific research, people have gradually prepared some quantum dots whose main body is c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/65B01J21/18B01J27/24A61K49/00G01N21/64B82Y20/00B82Y40/00
Inventor 徐胜杰雷周玥武培怡
Owner FUDAN UNIV
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