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Preparation method of carbon nanoparticle with high luminous intensity

A technology of carbon nanoparticles and luminous intensity, applied in the direction of luminescent materials, nanotechnology, chemical instruments and methods, etc., can solve the problems of low luminous intensity, difficult separation, low yield of carbon nanoparticles, etc., and achieve high luminous intensity, reaction Low temperature, easy to control effect

Inactive Publication Date: 2014-02-26
SHENYANG PHARMA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods often require expensive instruments and strict experimental conditions, and the prepared carbon nanoparticles have low yield, difficult separation, and low luminous intensity.

Method used

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  • Preparation method of carbon nanoparticle with high luminous intensity
  • Preparation method of carbon nanoparticle with high luminous intensity
  • Preparation method of carbon nanoparticle with high luminous intensity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Mix and grind 0.50 g of tartaric acid and 0.25 g of tyrosine solid in a mortar, and the mass ratio of tartaric acid and tyrosine is 2:1;

[0031] (2) Add the mixed and ground tartaric acid and tyrosine solids into 30 ml of ethylene glycol solvent and stir evenly to obtain an ethylene glycol mixture of tartaric acid and tyrosine. The mass concentration of tartaric acid and tyrosine in the mixture is 2.2%;

[0032] (3) Transfer the ethylene glycol mixture of tartaric acid and tyrosine into a reaction kettle, conduct a solvothermal reaction at 180° C. for 6 hours, and cool the reaction kettle to room temperature naturally to obtain a carbon nanoparticle solution.

[0033] figure 1 The X-ray diffraction pattern of the carbon nanoparticles prepared for this example has a very broad peak at about 2θ=20°, which is a characteristic peak of the amorphous form of carbon.

[0034] figure 2 The transmission electron micrograph of the carbon nanoparticle prepared in this emb...

Embodiment 2

[0040] (1) Mix and grind tartaric acid and tyrosine solids in a mortar evenly, the mass ratios of tartaric acid and tyrosine are 5:1, 2:1, 1:1, 1:2 respectively, and the solid mixture is 1.20 grams ;

[0041] (2) Add the mixed and ground tartaric acid and tyrosine solids into 30 ml of ethylene glycol solvent and stir evenly to obtain an ethylene glycol mixture of tartaric acid and tyrosine. The mass of tartaric acid and tyrosine in the mixture is The concentration is 3.5%;

[0042] (3) Transfer the ethylene glycol mixtures of tartaric acid and tyrosine into a reaction kettle, conduct a solvothermal reaction at 180° C. for 6 hours, and cool the reaction kettle to room temperature naturally to obtain a carbon nanoparticle solution.

[0043] The fluorescence properties of carbon nanoparticles prepared with different raw material ratios are similar, the best excitation wavelength of each sample is around 420nm, and the best emission wavelength is around 500nm. When the mass rati...

Embodiment 3

[0046] (1) Mix and grind 2.0 grams of tartaric acid and 1.0 grams of phenylalanine in a mortar, and the mass ratio of tartaric acid and phenylalanine is 2:1;

[0047] (2) Add the mixed and ground tartaric acid and phenylalanine solids into 25 ml of ethylene glycol solvent and stir evenly to obtain an ethylene glycol mixture of tartaric acid and phenylalanine, in which tartaric acid and phenylalanine The mass concentration is 9.7%;

[0048] (3) Transfer the ethylene glycol mixture of tartaric acid and phenylalanine into a reaction kettle, conduct a solvothermal reaction at 150° C. for 6 hours, and cool the reaction kettle to room temperature naturally to obtain a carbon nanoparticle solution.

[0049]The fluorescence properties of carbon nanoparticles prepared by reacting different amino acids with the same organic acid are similar, but the fluorescence excitation wavelength is different from the corresponding emission wavelength, Figure 9 is the fluorescence spectrum of carb...

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Abstract

The invention belongs to the technical field of preparation of carbon nano materials, and specifically relates to a method of preparing a carbon nanoparticle with high luminous intensity by organic acid and amino acid. The preparation method comprises the following specific steps: mixing and uniformly grinding the organic acid and amino acid solids in a mortar, adding the mixed and grinded organic acid and amino acid solids into a polyhydric alcohol solvent to prepare mixed liquor; and then, transferring the mixed liquor into a reaction kettle, carrying out solvothermal reaction for 3 hours-6 hours under the condition of 120 DEG C-180 DEG C, and naturally cooling the reaction kettle to the room temperature to obtain carbon nanoparticle liquor. The prepared carbon nanoparticle is uniformly spherical in morphological structure, and has a particle size of 10 nm-30 nm. According to the preparation method disclosed by the invention, raw materials for preparing the carbon nanoparticle are cheap, steps are simple, conditions are gentle and controllable, and the prepared carbon nanoparticle is high in luminous intensity and good in stability. And meanwhile, the carbon nanoparticle is rich in carboxyl on surface, can be directly connected with biomolecules, and has a wide application prospect in the fields such as biological medical detection, cell and tissue imaging.

Description

technical field [0001] The invention belongs to the technical field of carbon nanomaterial preparation, and in particular relates to a method for preparing carbon nanoparticle with high luminous intensity from organic acid and amino acid. Background technique [0002] One of the main goals of biological research is to introduce foreign luminescent labeling materials at different levels such as cells, tissues and living bodies for in vivo cell imaging and in vitro analysis and detection. Organic dyes are the first class of luminescent materials used in biomarkers. However, their applications have been limited due to their shortcomings such as short fluorescence lifetime and susceptibility to photobleaching. Semiconductor quantum dots, such as CdSe, CdTe, etc., have been widely used in medical diagnosis, biological imaging, ion detection, etc. a wide range of applications. However, semiconductor quantum dots have light scintillation phenomenon, and because their composition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/65B82Y40/00
Inventor 王桂燕李锋韩宝福
Owner SHENYANG PHARMA UNIVERSITY
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