Red fluorescent carbon quantum dot and preparation method and application of red fluorescent carbon quantum dot

A technology of carbon quantum dots and red fluorescence is applied in the field of red fluorescent carbon quantum dots and their preparation, and achieves the effects of cheap and easy-to-obtain raw materials, easy promotion, and mild reaction conditions.

Active Publication Date: 2018-12-21
SHANXI UNIV
View PDF3 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The study on the determination of berberine hydrochloride using nitrogen-doped c

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Red fluorescent carbon quantum dot and preparation method and application of red fluorescent carbon quantum dot
  • Red fluorescent carbon quantum dot and preparation method and application of red fluorescent carbon quantum dot
  • Red fluorescent carbon quantum dot and preparation method and application of red fluorescent carbon quantum dot

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Step 1, at room temperature, dissolve 0.0059 g of neutral red and 300 μL of anhydrous ethylenediamine (concentration 98%) in 20 ml of water, stir well, and sonicate to obtain a clear solution.

[0020] Step 2, transfer the solution to a 50mL hydrothermal reaction kettle.

[0021] Step 3: Put the hydrothermal kettle in an oven and react at 200°C for 5 hours to obtain a red solution.

[0022] Step 4, after filtering the insoluble matter, a red solution is obtained. Through a 1000Da dialysis bag, dialyze in a glass container for at least 3 days to obtain a pure aqueous solution of carbon quantum dots.

[0023] The above fluorescent carbon quantum dot aqueous solution was freeze-dried to obtain fluorescent carbon quantum dots, and its relative quantum yield (taking quinine sulfate as a standard) was 13.2%.

[0024] Characterization see figure 1 , 2 . figure 1 The fluorescence emission spectrum of the carbon quantum dot prepared in Example 1 shows that the excitation wa...

Embodiment 2

[0026] Anhydrous ethylenediamine was 100 μL, and other conditions were the same as in Example 1. Its relative quantum yield (based on quinine sulfate) is 10.1%.

Embodiment 3

[0028] 200 μL of anhydrous ethylenediamine, and the rest of the conditions are the same as in Example 1. Its relative quantum yield (based on quinine sulfate) is 9.88%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a red fluorescent carbon quantum dot, a preparation method and application of the red fluorescent carbon quantum dot, and belongs to the technical field of carbon nanomaterials.The carbon quantum dot is prepared by the steps that: at room temperature, neutral red and anhydrous ethylenediamine are dissolved in water at a mass ratio of (0.001-0.01):(0.15-0.30), the solution is transferred to a hydrothermal reactor and reaction is performed at 150 to 250 DEG C for 2 to 7 hours, and insoluble matters are filtered to obtain a light red solution; the solution is subjected todialysis treatment in a container for at least 3 days in a dialysis bag of 500 to 1,000 Da to obtain a water solution of pure carbon quantum dots; the solution is freeze-dried to obtain a target carbon quantum dot. The preparation method has advantages of simple preparation process, wide source of raw materials and low price, low preparation conditions and environmental friendliness. The preparedfluorescent carbon quantum dots can be used as a fluorescent probe for detection of berberine hydrochloride in Fufanghuangliansu Tablets and blood.

Description

technical field [0001] The invention relates to carbon nanomaterials, in particular to carbon quantum dots, in particular to a red fluorescent carbon quantum dot and its preparation method and application. Background technique [0002] Berberine hydrochloride (BER), also known as berberine, is an isoquinoline alkaloid, which is mainly used clinically for the treatment of intestinal infection and bacillary dysentery. At present, the detection methods of berberine hydrochloride include resonance Rayleigh scattering method, ultraviolet spectrophotometry, chemiluminescence method, molecular imprinted electrode method, capillary electrophoresis method, fluorescence spectroscopy and so on. The research on the determination of berberine hydrochloride using nitrogen-doped carbon quantum dots as a fluorescent probe has not been reported in the literature. In recent years, the preparation and related applications of carbon quantum dots have become very active research topics. It is e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C09K11/65B82Y20/00B82Y40/00G01N21/64
CPCB82Y20/00B82Y40/00C09K11/65G01N21/6428G01N21/643G01N21/6486G01N2021/6432
Inventor 孟雅婷焦媛刘洋双少敏董川
Owner SHANXI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap