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

Poly-isopropyl acrylamide functionalized fluorescent silicon quantum dot material and preparation method thereof

A technology of propylacrylamide and quantum dot materials, which is applied in the field of optical materials, can solve the problems of narrow application range and poor processability, and achieves the effects of good biocompatibility, good processability and improved application range.

Active Publication Date: 2016-05-04
HUNAN UNIV OF SCI & TECH
View PDF3 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure silicon quantum dots have disadvantages such as poor processability and narrow application range.

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
  • Poly-isopropyl acrylamide functionalized fluorescent silicon quantum dot material and preparation method thereof
  • Poly-isopropyl acrylamide functionalized fluorescent silicon quantum dot material and preparation method thereof
  • Poly-isopropyl acrylamide functionalized fluorescent silicon quantum dot material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 200 mg of fluorescent silicon quantum dots, add them to a mixed solution of 5 mL of ethanol and water, add 1 mL of KH-550 silane coupling agent, stir, react at room temperature for 24 hours, filter to remove the reaction solvent, and then vacuum dry to obtain aminated Fluorescent silicon quantum dots: weigh 50 mg of aminated fluorescent silicon quantum dots, add 10 mL of absolute ethanol to disperse and dissolve them, and transfer them to a round bottom flask, add 20 mg of EDC, 30 mg of NHS, and 30 mg of trithiocarbonate. Continue to stir, react at room temperature for 24 hours, and then dialyze in ethanol for 48 hours. The resulting solution is a purified fluorescent silicon quantum dot chain transfer agent; take 400 μL fluorescent silicon quantum dot chain transfer agent in a 10 mL ampoule, add 80 μL AIBN, 200 mg refined N-isopropylacrylamide, vacuumize after freezing under liquid nitrogen, then pass through nitrogen, repeat the operation of freezing-vacuumizing-...

Embodiment 2

[0031] Weigh 200 mg of fluorescent silicon quantum dots, add them to a mixed solution of 5 mL of ethanol and water, add 1 mL of KH-550 silane coupling agent, stir, react at room temperature for 24 hours, filter to remove the reaction solvent, and then vacuum dry to obtain aminated Fluorescent silicon quantum dots, weigh 50 mg of aminated fluorescent silicon quantum dots, add 10 mL of absolute ethanol to disperse and dissolve, and transfer it to a round bottom flask; add 20 mg EDC, 30 mg NHS, and 30 mg trithiocarbonate. Continue to stir, react at room temperature for 24 hours, and then dialyze in ethanol for 48 hours. The resulting solution is a purified fluorescent silicon quantum dot chain transfer agent. Take 400 μL fluorescent silicon quantum dot chain transfer agent in a 10 mL ampoule, add 80 μL AIBN, 200 mg refined N-isopropylacrylamide, vacuumize after freezing under liquid nitrogen, then pass through nitrogen, repeat the operation of freezing-vacuumizing-nitrogen for 5 t...

Embodiment 3

[0033] Weigh 200 mg of fluorescent silicon quantum dots, add them to a mixed solution of 5 mL of ethanol and water, add 1 mL of KH-550 silane coupling agent, stir, react at room temperature for 24 hours, filter to remove the reaction solvent, and then vacuum dry to obtain aminated Fluorescent silicon quantum dots, weigh 50 mg of aminated fluorescent silicon quantum dots, add 10 mL of absolute ethanol to disperse and dissolve, and transfer it to a round bottom flask; add 20 mg EDC, 30 mg NHS, and 30 mg trithiocarbonate. Continue to stir, react at room temperature for 24 hours, and then dialyze in ethanol for 48 hours. The resulting solution is a purified fluorescent silicon quantum dot chain transfer agent. Take 400 μL fluorescent silicon quantum dot chain transfer agent in a 10 mL ampoule, add 80 μL AIBN, 400 mg refined N-isopropylacrylamide, vacuumize after freezing under liquid nitrogen, then pass through nitrogen, repeat the operation of freezing-vacuumizing-nitrogen for 5 t...

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 poly-isopropyl acrylamide functionalized fluorescent silicon quantum dot material. Poly-isopropyl acrylamide is grafted to the surface of fluorescent silicon quantum dot synthesized by a hydrothermal method. The preparation method comprises the following steps: (1) amination of silicon quantum dot; (2) graft of a chain transferring agent on the silicon quantum dot; (3) graft of poly-isopropyl acrylamide by an RAFT polymerization method; and (4) posttreatment to obtain the poly-isopropyl acrylamide functionalized silicon quantum dot with fluorescent responsiveness. The obtained product is non-toxic, and has strong fluorescence, and good prospect in controlled drug delivery, and sensors.

Description

technical field [0001] The invention relates to the field of optical materials, and relates to a fluorescent silicon quantum dot material functionalized with polyisopropylacrylamide and a preparation method thereof. technical background: [0002] Silicon quantum dots (SiQDs) generally refer to silicon nanocrystals with a size no larger than 10 nm. Due to the quantum confinement effect, its luminous efficiency can far exceed that of traditional bulk silicon materials, showing excellent photoelectric properties. However, pure silicon quantum dots have disadvantages such as poor processability and narrow application range. [0003] In order to make silicon quantum dots exhibit excellent and stable photoelectric properties and be effectively applied, it is usually necessary to modify the surface of silicon quantum dots. The modified silicon quantum dots have more stable luminescent properties, low toxicity, and good biocompatibility, so fluorescent silicon quantum dots are wid...

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): C09K11/02C09K11/59
CPCC09K11/025C09K11/59
Inventor 廖博邓晓婷申少华曾文南易守军
Owner HUNAN UNIV OF SCI & 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