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Method of preparing near-infrared carbon quantum dots by taking Coomassie brilliant blue as carbon source

A technology for Coomassie brilliant blue and carbon quantum dots is applied in the field of preparing near-infrared carbon quantum dots, which can solve the problems of waste of starch and cellulose, environmental pollution, low resource utilization rate, etc. high effect

Inactive Publication Date: 2015-04-01
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current domestic turmeric diosgenin extraction industry adopts the characteristics of polluting the environment, low resource utilization, and a large amount of starch and cellulose being wasted

Method used

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  • Method of preparing near-infrared carbon quantum dots by taking Coomassie brilliant blue as carbon source
  • Method of preparing near-infrared carbon quantum dots by taking Coomassie brilliant blue as carbon source
  • Method of preparing near-infrared carbon quantum dots by taking Coomassie brilliant blue as carbon source

Examples

Experimental program
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Effect test

Embodiment 1

[0022] a. Weigh 1.00g of turmeric powder and put it into a 50mL hydrothermal reaction kettle, add 40mL of secondary water, place it in a drying oven, adjust the reaction temperature to 200°C, and the reaction time is 2h. After the reaction, take it out and cool it to room temperature, and filter to obtain Carbon quantum dots as a stock solution;

[0023] b. Weigh 0.0429g Coomassie Brilliant Blue and dissolve it in a 50mL volumetric flask to obtain a concentration of 1.0×10 -3 The Coomassie Brilliant Blue solution of mol / L is used as stock solution;

[0024] c. Add 1mL of Coomassie Brilliant Blue and 2mL of carbon quantum dot solution into a 50mL reaction kettle, add 37mL of secondary water, place in a dry box, adjust the reaction temperature to 200°C, and react for 4 hours. After the reaction, take it out and cool to room temperature , to filter near-infrared carbon quantum dots;

[0025] The excitation and emission spectra of fluorescent carbon quantum dots in this embodime...

Embodiment 2

[0027] a. Weigh 1.00g of turmeric powder and 50mL of hydrothermal reaction kettle, add 40mL of secondary water, put it in a drying oven, adjust the reaction temperature to 200°C, and the reaction time is 4h. After the reaction, take it out and cool it to room temperature, and filter to obtain Carbon quantum dots as a stock solution;

[0028] b. Weigh 0.01507g Coomassie Brilliant Blue and dissolve it in a 50mL volumetric flask to obtain a concentration of 1.0×10 -3 The Coomassie Brilliant Blue solution of mol / L is used as stock solution;

[0029] c. Add 1mL of Coomassie Brilliant Blue and 2mL of carbon quantum dot solution into a 50mL reaction kettle, add 37mL of secondary water, place in a dry box, adjust the reaction temperature to 200°C, and react for 6 hours. After the reaction, take it out and cool to room temperature , to filter near-infrared carbon quantum dots;

[0030] The excitation and emission spectra of fluorescent carbon quantum dots in this embodiment are as fo...

Embodiment 3

[0032] a. Weigh 1.00g of turmeric powder and put it into a 50mL hydrothermal reaction kettle, add 40mL of secondary water, place it in a drying oven, adjust the reaction temperature to 200°C, and the reaction time is 2h. After the reaction, take it out and cool it to room temperature, and filter to obtain Carbon quantum dots as a stock solution;

[0033] b. Weigh 0.01507g Coomassie Brilliant Blue and dissolve it in a 50mL volumetric flask to obtain a concentration of 1.0×10 -3 The Coomassie Brilliant Blue solution of mol / L is used as stock solution;

[0034] c. Add 1mL of Coomassie Brilliant Blue and 2mL of carbon quantum dot solution into a 50mL reaction kettle, add 37mL of secondary water, place in a dry box, adjust the reaction temperature to 200°C, and react for 8 hours. After the reaction, take it out and cool to room temperature , to filter near-infrared carbon quantum dots;

[0035] The excitation and emission spectra of fluorescent carbon quantum dots in this embodim...

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Abstract

The invention discloses a method of preparing near-infrared carbon quantum dots by taking Coomassie brilliant blue as a carbon source. The preparation method comprises the following steps: weighing a certain amount of turmeric extraction residue, placing the turmeric extraction residue in a reaction kettle, adding an appropriate amount of secondary water, placing the turmeric extraction residue in an electrothermal blowing dry oven and reacting, after the reaction is ended, taking out the turmeric extraction residue, naturally cooling to a room temperature, and filtering to obtain a carbon quantum dot solution for later use; preparing a Coomassie brilliant blue solution, uniformly mixing the Coomassie brilliant blue solution with carbon quantum dots, adding an appropriate amount of secondary water, transferring the mixed solution to a hydrothermal reaction kettle, placing the mixed solution in the electrothermal blowing dry oven for reacting, after the reaction is ended, taking out the mixed solution, naturally cooling to the room temperature, and filtering to obtain the near-infrared carbon quantum dots. The product obtained by the method disclosed by the invention is stable in property and good in fluorescence performance, has important application value in the fields of bioimaging, sensing, medicine delivery, photocatalysis, biological living imaging and the like, and uses the turmeric extraction residue as a raw material for realizing waste recycling without the need of a catalyst.

Description

technical field [0001] The invention relates to the technical field of near-infrared nanomaterial preparation, in particular to a method for preparing near-infrared carbon quantum dots by using Coomassie brilliant blue as a carbon source. Background technique [0002] Compared with traditional organic dyes and semiconductor quantum dots, fluorescent carbon quantum dots (CQDs) not only have the advantages of easy surface functionalization and stable optical properties, but also have the advantages of low cytotoxicity and good biocompatibility. Therefore, fluorescent carbon quantum dots have broad application prospects in the fields of bioimaging, sensing, drug delivery, photocatalysis, and bioin vivo imaging. At present, researchers have established a variety of methods for preparing fluorescent carbon quantum dots, (typical literature reports: Bourlinos A B, Stassinopoulos A, Anglos D, et al. Surface functionalized carbogenic quantum dots. Small, 2008, 4 (4): 455- 458.; Lon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/65
Inventor 曾云龙王天伦元晓云曾竞兴易守军黄昊文陈冰阳关婷婷邓彤彤魏莉莎唐春然
Owner HUNAN UNIV OF SCI & TECH
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