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

Preparation method of fluorescent Ag2Te nanocrystals

A technology of nanocrystals and fluorescence, applied in nanotechnology, nano-optics, nanotechnology, etc., can solve the problems of tuning, no way to fluoresce, etc., and achieve the effect of a wide range of photoluminescence wavelengths

Inactive Publication Date: 2017-03-22
苏州影睿光学科技有限公司
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ag prepared by Pang Daiwen's research group at Wuhan University 2 Te quantum dots also only have fluorescence at 1320 nm (Chemical Journal of Chinese Universities, 2015, 36, 1264-1268), and there is no way to adjust the fluorescence to the second near-infrared b 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
  • Preparation method of fluorescent Ag2Te nanocrystals
  • Preparation method of fluorescent Ag2Te nanocrystals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Mix 0.1 mmol of silver acetate and 10 g of dodecanethiol in a three-necked flask under N 2 The temperature was raised to 110 °C in the atmosphere, and 0.125 mL of tributylphosphine tellurium was injected, and then reacted at 110 °C for 5 min. Finally, after the solution was naturally cooled to room temperature, 50 mL of acetone was added, centrifuged, washed, and dispersed in cyclohexane , the resulting sample is a homogeneous monodisperse Ag 2 Te nanocrystals (such as figure 1 shown), with good as figure 2 The near-infrared fluorescence emission spectrum is shown.

Embodiment 2

[0026] Mix 0.1 mmol of silver nitrate and 18 g of octadecanethiol in a flask, raise the temperature to 100 °C in an Ar atmosphere, inject 0.08 mL of tributylphosphine tellurium, then react at 100 °C for 4.5 h, and finally let the solution naturally After cooling to room temperature, add 50 mL of ethanol, centrifuge, wash, and dry to obtain Ag 2 Te nanocrystalline powder.

Embodiment 3

[0028] Mix 0.1 mmol of silver trifluoroacetate and 12 g of cetyl mercaptan in a flask under N 2 In the atmosphere, the temperature was raised to 145 °C, and 0.15 mL of tributylphosphine tellurium was injected, and then reacted at 145 °C for 1 min. Finally, after the solution was naturally cooled to room temperature, 50 mL of ethanol was added, centrifuged, washed, and then dried to obtain Ag 2 Te nanocrystalline powder.

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 a preparation method of fluorescent Ag2Te nanocrystals. The Ag2Te nanocrystals have a continuous light-induced near-infrared light-emitting spectrum within the range of 1350-1620 nm. The preparation method of the Ag2Te nanocrystals includes the steps that a silver source and sulfur alcohol are heated to 90-145 DEG C under protection of inert gas, tributyl phosphine tellurium is injected, and a reaction is carried out sufficiently; a mixed reaction system is cooled, then a polar solvent is added, and the Ag2Te nanocrystals are obtained through centrifuging and washing. The Ag2Te nanocrystals are good in dispersity, high in fluorescence intensity and good in stability.

Description

technical field [0001] The present invention particularly relates to a kind of preparation fluorescent Ag 2 The invention discloses a Te nanocrystal method, which belongs to the technical field of material chemistry. Background technique [0002] The fluorescence in the b range of the second near-infrared region (1500-1700 nm) has been reported to have the advantages of ultra-low scattering, zero background, and centimeter-level penetration depth in in vivo imaging applications, which cannot be achieved by existing fluorescence. Therefore, it is widely used in biomedicine and other fields aroused widespread concern. At present, the common near-infrared second region b quantum dot nanoparticles contain toxic elements such as heavy metals Pb and Hg. Ag 2 As a new type of near-infrared two-zone fluorescent nanomaterial, there are not many research reports. The reason is that the Ag prepared by the existing method 2 Te has no fluorescence, or the fluorescence is very weak, w...

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 Applications(China)
IPC IPC(8): C09K11/88C01B19/04B82Y20/00B82Y40/00
CPCC09K11/88B82Y20/00B82Y40/00C01B19/007
Inventor 孙国凤刘莉丽
Owner 苏州影睿光学科技有限公司
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