Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of high-efficient multicolor-fluorescence water-soluble sulfur oxygen-codoped graphene quantum dot

A graphene quantum dot, water-soluble technology, applied in the direction of graphene, energy input, nano-carbon, etc., can solve the problems of semiconductor quantum dot toxicity, complicated preparation process, high cost, etc., and achieve high fluorescent electron transfer efficiency and high-efficiency fluorescent electron The effect of transfer efficiency

Inactive Publication Date: 2014-06-04
YUNNAN NORMAL UNIV
View PDF4 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention addresses a series of key issues restricting the wide application of semiconductor quantum dots in fields such as optoelectronics, biological imaging, and quantum computing, such as toxicity, high cost, monochromatic light emission, and complex preparation processes

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
  • Preparation method of high-efficient multicolor-fluorescence water-soluble sulfur oxygen-codoped graphene quantum dot
  • Preparation method of high-efficient multicolor-fluorescence water-soluble sulfur oxygen-codoped graphene quantum dot
  • Preparation method of high-efficient multicolor-fluorescence water-soluble sulfur oxygen-codoped graphene quantum dot

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]Example 1: Take a 100 ml beaker as a container, weigh 0.5 g of fructose, pour the fructose into the beaker, measure about 39.5 ml of deionized water with a measuring cylinder, introduce it into the beaker, and stir with a glass rod to dissolve the sugar. Slowly add 0.5 ml of sulfuric acid with a mass percent concentration (wt%) of 98% to the fructose solution, and stir the solution to make it uniform. Transfer the reaction solution to a polytetrafluoroethylene lining, then put the polytetrafluoroethylene into a stainless steel reaction kettle, and heat at 170°C for 4 hours. After the reactor was cooled to room temperature, the reactor was opened, and the sample was purified by dialysis with a dialysis bag with a molecular weight of 1000 (the outside of the dialysis bag was deionized water), and finally the sample was collected. The prepared sulfur and oxygen co-doped graphene quantum dots have an average size of 4-7 nm.

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

A preparation method of high-efficient multicolor-fluorescence water-soluble sulfur oxygen-codoped graphene quantum dots relates to the preparation of sulfur oxygen-codoped graphene quantum dots by a one-step synthetic method. The preparation method of high-efficient multicolor-fluorescence water-soluble sulfur oxygen-codoped graphene quantum dots of the invention is characterized in that during preparation, doping and material preparation are combined as a one step; sulfuric acid plays two roles in the reaction, the first one is to provide a doping sulfur source, and the second one is to catalyze intramolecular and intermolecular dehydration of sugar; and the prepared sulfur oxygen-codoped graphene quantum dots have a hexagonal honeycomb structure with good crystallinity. The sulfur oxygen-codoped graphene quantum dots prepared in the invention have the characteristics of water solubility, multicolor luminescence, property stability, large-scale production, low preparation cost, and the like, and thus have great application value in fields of biofluorescence imaging, light emitting diodes, laser diodes, solar cells, detectors, quantum computation, and the like.

Description

technical field [0001] The invention relates to a preparation method of high-efficiency multicolor fluorescent water-soluble sulfur and oxygen co-doped graphene quantum dots, especially using cheap sugar and sulfuric acid as raw materials, and using a green, environmentally friendly and simple hydrothermal reaction technology to prepare high-efficiency multicolor A method of co-doping graphene quantum dots with water-solubility, self-passivation, and good chemical stability for color fluorescence and oxygen. Background technique [0002] Fluorescent quantum dot materials are widely used in bioluminescent imaging, quantum computing, transistors, photosensitive detectors, light-emitting devices, and solar cells due to their luminescent properties. However, the current fluorescent quantum dot materials are mainly II-VI and IV-VI inorganic semiconductors CdS, CdSe, CdTe, PbS, PbSe, PbTe, these quantum dot materials are widely used in fluorescent probes, transistors, solar energy...

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): C01B31/04C01B32/184
CPCY02P20/133
Inventor 李学铭唐利斌杨雯杨培志
Owner YUNNAN NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com