Preparation method of water-soluble bi-colour fluorinated graphene quantum dot

A fluorinated graphene and fluorinated graphite technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of uneven size of quantum dots, use of highly toxic gases, expensive preparation costs, etc., and achieve high light stability, Mild conditions and good dispersion

Active Publication Date: 2015-09-30
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a simple and effective method for preparing fluorinated graphene quantum dot

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 water-soluble bi-colour fluorinated graphene quantum dot
  • Preparation method of water-soluble bi-colour fluorinated graphene quantum dot
  • Preparation method of water-soluble bi-colour fluorinated graphene quantum dot

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1: Preparation of blue fluorescent fluorinated graphene quantum dots

[0033] 200 mg of fluorinated graphite was added to 40 mL of N-methylpyrrolidone, heated to reflux, sonicated, and the upper layer solution was suction filtered and washed to obtain fluorinated graphene. After 100mg fluorinated graphene and 320mg mixed alkali are uniformly mixed, normal pressure 170 o C heat reaction treatment until the color of fluorinated graphene turns black. After adding dissolved amount of water to dissolve, ultrasonically dispersed, and then filtered, washed, and dried to obtain modified fluorinated graphene. Add 100mg of modified fluorinated graphene to 80mL of mixed acid, and after ultrasonic dispersion, at 60 o C reflux for 24 hours. After the reaction product was poured out and diluted with water, the pH was adjusted to 8 with sodium carbonate. After suction filtration, the filtrate was placed in a dialysis bag with a molecular weight of 500-3000Da for dialysis to obta...

Example Embodiment

[0034] Example 2: Preparation of yellow fluorescent fluorinated graphene quantum dots

[0035] Add 100 mg of the modified fluorinated graphene obtained in Example 1 to 80 mL of mixed acid. After ultrasonic dispersion, o C reflux for 24 hours. After the reaction product was poured out and diluted with water, the pH was adjusted to 8 with sodium carbonate. After suction filtration, the filtrate was placed in a dialysis bag with a molecular weight of 500-3000Da for dialysis to obtain yellow fluorescent fluorinated graphene quantum dots with good water solubility and chemical stability. .

Example Embodiment

[0036] Example 3: Preparation of blue fluorescent fluorinated graphene quantum dots

[0037] Replace "40mL N-methylpyrrolidone" in Example 1 with "40mL ethanol". The other preparation conditions were the same as in Example 1, and a product similar to that in Example 1 was obtained.

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 discloses a preparation method of a water-soluble bi-colour fluorinated graphene quantum dot. The preparation method of the water-soluble bi-colour fluorinated graphene quantum dot is characterized in that graphite fluoride is taken as a raw material, and stripping, modification and refluxing are carried out, so that a blue and yellow fluorescent fluorinated graphene quantum dot with good water solubility and stable chemical properties is obtained. The obtained water-soluble bi-colour fluorinated graphene quantum dot has great application prospects in the aspects of biology and sensing as well as photovoltaic devices, and is a novel fluorescent nano material with a high application value.

Description

technical field [0001] The invention relates to a preparation technology of fluorinated graphene quantum dots, in particular to a preparation technology of two-color fluorinated graphene quantum dots with good water solubility and stable chemical properties. Background technique [0002] In the past decade, graphene has shown promising research and application value in the scientific and industrial circles due to its excellent optical, electrical, thermal and mechanical properties. The band gap of graphene can be opened by chemical modification or reducing its size, which greatly promotes graphene to enter the stage of practical application. The graphene quantum dots formed by reducing the size of graphene to less than 10nm not only exhibit the advantages of stable fluorescence, high specific surface area and adjustable energy gap, but also have low cytotoxicity and excellent biocompatibility , These properties make graphene quantum dots have great application prospects in ...

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): C01B31/00C09K11/65
Inventor 王金清公培伟杨生荣
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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