Supercharge Your Innovation With Domain-Expert AI Agents!

A preparation method of n, s doped carbon dots with high fluorescence quantum yield

A fluorescence quantum yield and quantum yield technology, applied in the field of fluorescent nanomaterials, can solve problems such as limiting the application of carbon dots, and achieve the effects of high quantum yield, high fluorescence intensity and strong stability

Inactive Publication Date: 2019-07-16
DALIAN UNIV OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus limiting the further application of carbon dots in the field of cell imaging

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
  • A preparation method of n, s doped carbon dots with high fluorescence quantum yield
  • A preparation method of n, s doped carbon dots with high fluorescence quantum yield
  • A preparation method of n, s doped carbon dots with high fluorescence quantum yield

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Dissolve 0.1g of m-phenylenediamine and 0.2g of mercaptosuccinic acid in 10mL of ultrapure water, sonicate for 10min, place the solution in a 50mL polytetrafluoroethylene reactor, react at 120°C for 12h, cool to room temperature, and use the liquid after reaction The 3K dialysis bag was dialyzed for 24 hours, and the carbon dots were obtained after freeze-drying.

[0020] figure 1 The ultraviolet-visible absorption spectrum of the carbon dot aqueous solution obtained in Example 1 shows that the carbon dot aqueous solution has a strong absorption peak at 292nm. figure 2 It is the fluorescence emission spectrum figure of the aqueous solution of carbon dots obtained in Example 1. It can be seen from the figure that the fluorescence emission wavelength of the obtained carbon dots has an excitation wavelength-dependent property, and the maximum excitation wavelength is 420nm. image 3 It is the infrared absorption diagram of the carbon dots obtained in Example 1, from whic...

Embodiment 2

[0022] Dissolve 0.1g of m-phenylenediamine and 0.2g of mercaptosuccinic acid in 10mL of ultrapure water, ultrasonicate for 10min, place the solution in a 50mL polytetrafluoroethylene reactor, react at 140°C for 10h, cool to room temperature, and use the liquid after reaction The 3K dialysis bag was dialyzed for 24 hours, and the carbon dots were obtained after freeze-drying.

Embodiment 3

[0024] Dissolve 0.1g of m-phenylenediamine and 0.2g of mercaptosuccinic acid in 10mL of ultrapure water, sonicate for 10min, place the solution in a 50mL polytetrafluoroethylene reactor, react at 160°C for 8h, cool to room temperature, and use the liquid after reaction The 0.5K dialysis bag was dialyzed for 36 hours, and the carbon dots were obtained after freeze-drying.

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

PropertyMeasurementUnit
sizeaaaaaaaaaa
sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of N,S-doped carbon dots with high fluorescent quantum yield, and belongs to the field of fluorescent nanometer materials. The preparation method specifically comprises the following steps of at room temperature, dissolving m-phenylenediamine and DL-mercaptosuccinic acid with mass ratio of 1:(1 to 4) into ultrapure water, and uniformly stirring, so as to obtain a mixed solution; putting the mixed solution into a high-pressure reaction kettle, reacting for 2 to 12h at the temperature of 120 to 180 DEG C, naturally cooling to room temperature, using a 0.5 to 10K dialysis bag to dialyze a sample for 12 to 26h, and freeze-drying, so as to obtain solid, namely the N,S-doped carbon dots with high fluorescent quantum yield. The carbon dot prepared by the preparation method has the advantages that the fluorescence strength is high, the stability is stronger, and the quantum yield is 66.84%.

Description

technical field [0001] The invention relates to the preparation of N and S doped carbon dots with high fluorescence quantum yield, belonging to the field of fluorescent nanometer materials. Background technique [0002] As a new type of fluorescent nanomaterial, carbon dots have attracted too much attention in recent years. Compared with traditional semiconductor quantum dots and organic fluorescent dyes, carbon dots have many advantages including simple synthesis and functionalization, high light resistance, low toxicity, less environmental hazards, and low cost, thus proving their applications in remote sensing, biomedicine, and catalysis. , Optoelectronic devices and other potential applications. Although many carbon dots were synthesized, most of them were blue fluorescent. Thus limiting the further application of carbon dots in the field of cell imaging. [0003] At present, there are two main synthesis methods of carbon dots: top-down and bottom-up; the former inclu...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/65
CPCC09K11/65
Inventor 韩冰雁于明波孙佳慧迟晨彭婷婷李莹胡茜茜侯绪芬相荣超
Owner DALIAN UNIV OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com