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

Room temperature phosphorescent carbon dot composite and preparation method thereof

A technology of room temperature phosphorescence and composites, applied in the direction of fluorescence/phosphorescence, chemical instruments and methods, nano-carbon, etc., can solve the problems of complex steps, complex preparation and processing processes, etc., to achieve enhanced phosphorescence emission, high phosphorescence efficiency, and good room temperature Effect of Phosphorescent Properties

Active Publication Date: 2022-03-22
TAIYUAN UNIV OF TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This requires a complicated preparation and processing process. Generally, a two-step method is used to prepare phosphorescent carbon dots at room temperature, and then compound them with the matrix material, which has the disadvantage of complicated steps.

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
  • Room temperature phosphorescent carbon dot composite and preparation method thereof
  • Room temperature phosphorescent carbon dot composite and preparation method thereof
  • Room temperature phosphorescent carbon dot composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Take 10 mL of formamide, mix it with 10 mL of ethylene glycol, and then add 1.6 g of phthalic acid, stir, mix and disperse evenly at room temperature to obtain a reaction solution.

[0035] The above reaction solution was placed in a 40 mL stainless steel autoclave lined with polytetrafluoroethylene, and solvothermally reacted in an oven at 220 ° C for 6 h.

[0036] After the reaction was completed and cooled to room temperature, the obtained solid-liquid mixed product was taken out and vacuum-filtered with a 0.22 μm microporous membrane. After the obtained solid was dried in a drying oven at 60° C., an off-white room temperature phosphorescent carbon dot composite powder solid was obtained.

[0037] figure 1 It is the physical picture of the room temperature phosphorescent carbon dot composite prepared above under the irradiation of fluorescent lamp and 365nm ultraviolet lamp respectively, and after stopping the ultraviolet irradiation. The figure shows that the com...

Embodiment 2

[0050] Take 10 mL of formamide, mix it with 10 mL of ethylene glycol, and then add 2.4 g of phthalic acid, stir, mix and disperse evenly at room temperature to obtain a reaction solution.

[0051] The above reaction solution was placed in a 40 mL stainless steel autoclave lined with polytetrafluoroethylene, and solvothermally reacted in an oven at 220 ° C for 6 h.

[0052] After the reaction was completed and cooled to room temperature, the obtained solid-liquid mixed product was taken out and vacuum-filtered with a 0.22 μm microporous membrane. The obtained solid was dried in a drying oven at 60° C. to obtain an off-white powdery solid.

[0053] After irradiating the powdered solid obtained above with a 365 nm ultraviolet lamp for 3-5 seconds, stop the ultraviolet irradiation, and it can be observed that the powdered solid emits green phosphorescence.

Embodiment 3

[0055] Take 10 mL of formamide, mix it with 10 mL of ethylene glycol, and then add 1.6 g of phthalic acid, stir, mix and disperse evenly at room temperature to obtain a reaction solution.

[0056] The above reaction solution was placed in a 40 mL stainless steel autoclave lined with polytetrafluoroethylene, and solvothermally reacted in an oven at 220 ° C for 4 h.

[0057] After the reaction was completed and cooled to room temperature, the obtained solid-liquid mixed product was taken out and vacuum-filtered with a 0.22 μm microporous membrane. The obtained solid was dried in a drying oven at 60° C. to obtain an off-white powdery solid capable of emitting green phosphorescence.

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
particle diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a room-temperature phosphorescent carbon dot composite and a preparation method thereof. The room-temperature phosphorescent carbon dots are directly prepared by using phthalic acid as a carbon source, formamide as a nitrogen source, and ethylene glycol as a solvent by a solvothermal method. Complex powder. The room-temperature phosphorescent carbon dot composite of the present invention emits blue fluorescence under ultraviolet light irradiation, and generates green phosphorescence after stopping the irradiation. The room-temperature phosphorescent carbon dot composite of the invention has high phosphorescence efficiency, and can be used as a phosphorescent material in technical fields such as photoelectric devices, safety and anti-counterfeiting, and biological imaging.

Description

technical field [0001] The invention belongs to the technical field of phosphorescent luminescent materials, and in particular relates to a carbon dot composite, in particular to a carbon dot composite capable of emitting phosphorescence at room temperature, and a preparation method of the carbon dot composite. Background technique [0002] Carbon dots are quasi-zero-dimensional carbon nanomaterials with a particle size of less than 10nm. They are monodisperse spherical quantum dots with a carbon structure as the basic skeleton and a large number of organic groups distributed on the surface. They often have specific photoluminescent properties. [0003] As a new type of organic phosphorescent material, compared with traditional inorganic and organic phosphorescent materials, carbon dots have the advantages of good biocompatibility, low toxicity, mild and environmentally friendly preparation conditions, flexible and diverse preparation methods, and wide sources of preparation ...

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): C09K11/65C09K11/06B82Y30/00B82Y40/00C01B32/15C09D11/50G01N21/64
CPCC09K11/65C09K11/0883C09K11/06B82Y30/00B82Y40/00C01B32/15C09D11/50G01N21/64
Inventor 郑静霞杨永珍郑延宁卢太平刘旭光许并社
Owner TAIYUAN UNIV OF TECH
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