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Water-soluble boron nitride quantum dot and preparation method thereof

A technology of boron nitride and quantum dots, which is applied in chemical instruments and methods, nitrogen compounds, inorganic chemistry, etc., can solve the problems of limiting industrial application prospects, difficult to remove product impurities, and affecting cell labeling applications, and achieve broad industrial application prospects , short production cycle, excellent cell labeling effect

Inactive Publication Date: 2015-11-18
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has strict requirements on equipment, strict reaction conditions, complicated operation process, and many impurities in the product are difficult to remove, which affects its application as a cell marker and limits its broad industrial application prospects.

Method used

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  • Water-soluble boron nitride quantum dot and preparation method thereof
  • Water-soluble boron nitride quantum dot and preparation method thereof
  • Water-soluble boron nitride quantum dot and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Disperse 1g of boron nitride powder raw materials in 200mL of N,N-dimethylformamide solvent, and sonicate for 8 hours at a power of 250W. The supernatant obtained after standing is the boron nitride nanosheet solution, take 150mL The supernatant was heated to 140 in a 250mL round bottom flask o C. Continue stirring for 24 hours to obtain the boron nitride quantum dot dispersion and place it in water for 3 days to remove the solvent. Finally, the product was frozen in liquid nitrogen, and then dried with a freeze dryer for 5 days to obtain quantum dot powder.

[0026] From figure 1 with figure 2 It can be seen that the prepared boron nitride quantum dot solution is light yellow under natural light, and has bright blue fluorescence under 365nm ultraviolet light. image 3 with Figure 4 You can see the fluorescence characteristics of the prepared boron nitride quantum dots, from Figure 5 It can be seen that the prepared boron nitride quantum dots have a very uniform size and...

Embodiment 2

[0028] Disperse 0.5 g of boron nitride powder raw material in 150 mL of dimethyl sulfoxide solvent, sonicate for 6 hours at a power of 250W, and leave the supernatant to obtain the boron nitride nanosheet solution. Take 100 mL of the supernatant Liquid in a 250mL round bottom flask, heated to 160 o C. Continue stirring for 24 hours to obtain the boron nitride quantum dot dispersion and place it in water for 3 days to remove the solvent. Finally, the product was frozen in liquid nitrogen, and then dried in a freeze dryer for 4 days to obtain quantum dot powder.

Embodiment 3

[0030] Disperse 0.1g of boron nitride powder raw materials in 50mL of N-methylformamide solvent, and sonicate for 10 hours at a power of 250W. After standing still, the supernatant obtained is the boron nitride nanosheet solution. Take 30mL of the supernatant. The clear liquid was heated to 140 in a 100mL round bottom flask o C. Continue stirring for 12 hours to obtain the boron nitride quantum dot dispersion and place it in water for 2 days to remove the solvent. Finally, the product is frozen in liquid nitrogen, and then dried in a freeze dryer for 3 days to obtain quantum dot powder.

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Abstract

The invention belongs to the technical field of functional materials, and concretely relates to a water-soluble boron nitride quantum dot used for biological imaging and proton exchange membranes, and a preparation method thereof. The method is characterized in that the water-soluble boron nitride quantum dot with bright blue fluorescence can be directly prepared by processing boron nitride powder through solvent ultrasonic treatment and solvothermal combination, can be used as a high-efficiency and low-toxicity biological cell imaging probe, and also can be used as a modified proton exchange membrane material. The preparation method has the advantages of simple operation, simple post-treatment, low production cost and easy batch production, and the prepared boron nitride quantum dot has the advantages of obvious fluorescence, wide application, large scale preparation potential and wide commercial application prospect.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a water-soluble boron nitride quantum dot which can be used in biological imaging and proton exchange membranes 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, which aroused widespread research interest in fluorescent probes for cell labeling, and graphene has been awarded the Nobel Prize in Physics since 2010. , due to its unique physical and chemical properties, has aroused an upsurge of research on related two-dimensional materials. Recently, in the intersection of two-dimensional materials and cell labeling probes, it has been found that graphene and quantum dots of similar two-dimensional materials can replace fluorescent proteins and traditional quantum dots containing heavy metal elements as m...

Claims

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Application Information

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IPC IPC(8): C01B21/064C09K11/63B82Y30/00
Inventor 徐胜杰雷周玥武培怡
Owner FUDAN UNIV
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