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

Preparation method of oil-soluble fluorescent tmds quantum dots and colloids thereof

A quantum dot and oil-soluble technology, applied in chemical instruments and methods, luminescent materials, nanotechnology, etc., can solve the problems of complex and unsafe preparation methods of oil-soluble fluorescent TMDs quantum dots, and achieve low equipment cost, simple method, The effect of mild and safe conditions

Active Publication Date: 2021-08-24
CHAOHU UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is that the preparation method of the existing oil-soluble fluorescent TMDs quantum dots is complicated and unsafe

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 oil-soluble fluorescent tmds quantum dots and colloids thereof
  • Preparation method of oil-soluble fluorescent tmds quantum dots and colloids thereof
  • Preparation method of oil-soluble fluorescent tmds quantum dots and colloids thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Example 1: Oil-soluble fluorescent MoS 2 Preparation of quantum dots

[0051] (1) Add 150mg MoS to a three-neck flask containing 30ml cyclohexanone 2 ;

[0052] (2) Simultaneously turn on the magnetic stirrer and the electric heating mantle, heat the solution under stirring conditions until the temperature of the solution is 140°C, then reflux at a constant temperature for 12 hours, then stop stirring, turn off the heat source at the same time, and let stand for 3 hours;

[0053] (3) Take the supernatant and centrifuge at 12000r / min for 10min, collect the supernatant and put it in a rotary evaporator, keep a relative vacuum of -40KPa, and dry it in vacuum at 120°C for 12 hours to obtain 50mg of fluorescent MoS 2 quantum dots. Calculated, fluorescent MoS 2 The yield of quantum dots was 0.33, and the fluorescence quantum yield was 9.6%.

[0054] Product yield calculation steps:

[0055] (1) Weigh the raw material MoS 2 or WS 2 mass, denoted as m 0 ;

[0056] (2)...

Embodiment 2

[0066] Example 2: Oil-soluble fluorescent MoS 2 Preparation of quantum dots

[0067] Using the method of Example 1, the difference is that in the present example step (1) cyclohexanone and MoS 2 The dosages are 60ml and 400mg respectively. This embodiment obtains 120mg fluorescent MoS in total 2 quantum dots. Calculated, fluorescent MoS 2 The yield of quantum dots is 0.3, and the fluorescence quantum yield is 8.8%.

Embodiment 3

[0068] Example 3: Oil-soluble fluorescent MoS 2 Preparation of Quantum Dot Colloids

[0069] Get the MoS prepared in 20mg embodiment 1 2 Quantum dots, added to 20ml cyclohexane, ultrasonically dispersed for 20min, stored at low temperature and protected from light, to obtain fluorescent MoS 2 Quantum dot colloid.

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 relates to the technical field of nanomaterial preparation, in particular to a method for preparing oil-soluble fluorescent TMDs quantum dots and colloids thereof; comprising (1) adding a transition metal sulfur compound to cyclohexanone to prepare a suspension; (2) The suspension is heated to reflux, and cooled and left standing after reflux; (3) The supernatant after standing is taken for centrifugation, and then the supernatant after centrifugation is collected and subjected to rotary distillation to obtain oil-soluble TMDs quantum dots. The beneficial effects of the invention lie in that the method is simple, the conditions are mild and safe, the equipment cost is low, the preparation efficiency is high, and no subsequent purification treatment is required.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a method for preparing oil-soluble fluorescent TMDs quantum dots and colloids thereof. Background technique [0002] Quantum dots (Quantum Dots, QDs) are zero-dimensional nano-semiconductor materials with a series of unique photoelectric properties, and are widely used in solar cells, light-emitting devices, biomedicine and other fields. Two-dimensional transition metal dichalcogenides (TMDs) refer to X-M-X sandwich structure compounds formed by transition metal elements (M) and chalcogen nonmetal elements (X), such as MoS 2 、WS 2 wait. For a long time, people's research on TMDs has mainly focused on the micro- and nano-scales. With the development of material technology, it is found that by further reducing the material size, MoS 2 、WS 2 The direct bandgap material can be mutated from the indirect bandgap, and its physical and chemical properties are mutate...

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): C09K11/68B82Y40/00
CPCB82Y40/00C09K11/681
Inventor 吴凤义蒋阳陈敏胥恩泽汪海燕杨绳岩高立王志海吴凤彬
Owner CHAOHU 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