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

A quantum dot-gold nanoparticle heterogeneous superlattice and its preparation method and application

A gold nanoparticle and quantum dot technology, applied in the field of quantum dot-gold nanoparticle heterogenous superlattice and its preparation, can solve the problems of precursor toxicity, complex synthesis technology of synthetic quantum dots, complex synthesis technology, etc. moving effect

Active Publication Date: 2021-12-14
JILIN UNIV
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most experimental methods use dodecanethiol to coat the surface of quantum dots. However, the synthesis technology of quantum dots is complex, and their precursors are toxic. Dodecanethiol is used to coat the surface of quantum dots. Its synthesis technique is more complex

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 quantum dot-gold nanoparticle heterogeneous superlattice and its preparation method and application
  • A quantum dot-gold nanoparticle heterogeneous superlattice and its preparation method and application
  • A quantum dot-gold nanoparticle heterogeneous superlattice and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] One aspect of the embodiments of the present invention provides a method for preparing a quantum dot-gold nanoparticle heterogeneous superlattice, which includes:

[0025] Provide gold nanoparticles coated with thiol groups;

[0026] The mixed reaction system comprising the gold nanoparticles coated with the thiol group, quantum dots, polymethyl methacrylate (PMMA) and solvent is self-assembled at 20-30°C to prepare the quantum dot-gold nano Particle heterogeneous superlattices.

[0027] In some more specific embodiments, the preparation method includes:

[0028] reacting the first mixed reaction system comprising chloroauric acid, tetraoctylammonium bromide and water at 20-30°C for 50-70min to prepare an oil phase solution comprising gold nanoparticles;

[0029] And, reacting the second mixed reaction system comprising the oil phase solution containing gold nanoparticles, thiol, reducing agent and water at 20-30°C for 10-14h to prepare gold nanoparticles coated with ...

Embodiment 1

[0049] Dissolve 328mg of chloroauric acid in 20ml of deionized water, then add 6.526g of tetraoctylammonium bromide solution, stir the mixture at 25°C for 1h at 600rpm, react to form gold nanoparticles, separate the oil phase solution, and discard Aqueous phase solution, then 600μL of dodecanethiol was added to the oil phase, stirring continuously at 600rpm; 378mg of sodium borohydride (NaBH 4 ) was dissolved in 20ml of deionized water, and then the aqueous phase solution was quickly poured into the stirring oil phase solution, and the mixture of the two phases was stirred at 25°C for 12h at 600rpm until the oil phase separated; ethanol was added to the organic In the phase (volume ratio 4:1), under 8500rpm, centrifuge 5min, then centrifugally collect the gold nanoparticles (thiol-Au nanoparticles) coated with thiol groups, and the collected thiol-Au nanoparticles are redispersed in 3ml of toluene was centrifuged at 10000rpm for 5min to collect the precipitated thiol-Au nanopa...

Embodiment 2

[0053] Dissolve 328mg of chloroauric acid in 20ml of deionized water, then add 6.526g of tetraoctylammonium bromide solution, stir the mixture at 20°C for 70min at 1000rpm, react to form gold nanoparticles, separate the oil phase solution, and discard Water phase solution, then add 600 μL of octadecanethiol to the oil phase, and continue to stir at 1000 rpm; dissolve 378 mg of lithium aluminum hydride in 20 ml of deionized water, and then quickly pour the water phase solution into the stirring tank In the oil phase solution, the mixture of the two phases was stirred at 1000rpm at 20°C for 14h until the oil phase separated; after ethanol was added to the organic phase (volume ratio 4:1), it was centrifuged at 8500rpm for 5min, and then the sulfur was collected by centrifugation. Alcohol group-coated gold nanoparticles (thiol-Au nanoparticles), the collected thiol-Au nanoparticles are redispersed in 3ml of toluene, centrifuged at 10000rpm for 5min, and the thiol-Au nanoparticles ...

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 quantum dot-gold nanoparticle heterogeneous superlattice, a preparation method and application thereof. The preparation method comprises: self-assembling the mixed reaction system comprising the gold nanoparticles coated with the thiol group, quantum dots, polymethyl methacrylate and solvent at 20-30°C to prepare the quantum dots ‑Gold Nanoparticle Heterogeneous Superlattice. In the present invention, by coating thiol on the surface of gold nanoparticles, the combination of thiol-gold nanoparticles and quantum dots forms a heterogeneous superlattice structure, which prevents the aggregation of nanoparticles and forms a more ordered heterogeneous superlattice structure. Lattice structure; the quantum dot-gold nanoparticle heterogeneous superlattice prepared by the present invention is dispersed in polymethyl methacrylate, so that the prepared quantum dot-gold nanoparticle heterogeneous superlattice structure is easy to move and is convenient for high pressure The movement under the environment does not destroy the heterogeneous superlattice structure, and the heterogeneous superlattice prepared by the invention can be used in the preparation of photoelectric devices.

Description

technical field [0001] The invention belongs to the technical field of material self-assembly, and in particular relates to a quantum dot-gold nanoparticle heterogeneous superlattice and a preparation method and application thereof. Background technique [0002] A superlattice refers to a structure in which the lattice matching of two materials is relatively intact and has a periodic alternate growth structure. Nanoparticles with different sizes and functions can self-assemble to form a superlattice structure while retaining their original properties. The materials of the building blocks of nanoparticles generally include: noble metals, semiconductors, oxides, magnetic alloys. Compared with dispersed nanoparticles, the superlattice structure composed of such particles adds some novel and unique properties. At the same time, in the process of self-assembly, due to the selectivity of assembly materials and the diversity of assembly structures, self-assembled superlattices ha...

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): B22F9/24B22F1/02C30B29/68C08L33/12C08K9/10C08K3/08C08K3/30
CPCB22F9/24C30B29/68C08K9/10C08K3/08C08K3/30C08K2201/011C08K2003/0831C08K2003/3036B22F1/102C08L33/12
Inventor 潘凌云程基超
Owner JILIN 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