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

Aqueous phase synthesizing method for transient metal Mn doped ZnSe quantum dot

A transition metal, quantum dot technology, applied in chemical instruments and methods, measuring devices, color/spectral property measurement, etc. Safe and easy effect

Inactive Publication Date: 2009-08-12
JILIN UNIV
View PDF0 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to connect the semiconductor nanocrystals synthesized in the organic phase with biological materials, post-treatment must be carried out so that the surface of the semiconductor nanocrystals is connected with appropriate hydrophilic functional groups, and these post-treatment processes are usually complicated and time-consuming

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
  • Aqueous phase synthesizing method for transient metal Mn doped ZnSe quantum dot
  • Aqueous phase synthesizing method for transient metal Mn doped ZnSe quantum dot
  • Aqueous phase synthesizing method for transient metal Mn doped ZnSe quantum dot

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of transition metal Mn-doped ZnSe quantum dots is divided into two parts: (a) the formation of transition metal Mn and Se clusters, (b) the encapsulation reaction of outer ZnSe, and the transition metal Mn-doped ZnSe quantum dots are prepared. point.

[0023] The preparation of transition metal Mn-doped ZnSe quantum dots specifically includes the following steps: (a) take 0.005g selenium powder and dissolve it in 1mL double distilled water, and add 0.005g sodium borohydride under ice-water bath conditions to make the selenium powder and The molar ratio of sodium borohydride is 1:2, and stirred for 2 hours to prepare a sodium selenium hydride stock solution for use, and its concentration is 0.0625M;

[0024] (b) Weigh 0.2473g MnCl 2 4H 2O is dissolved in 100mL double-distilled water to prepare the stock solution of the salt compound of Mn, its concentration is 0.0125M, and 0.9297g Zn(NO 3 ) 2 ·6H 2 O is dissolved in 100mL double-distilled wate...

Embodiment 2

[0031] The preparation of transition metal Mn-doped ZnSe quantum dots specifically includes the following steps: (a) take 0.005g selenium powder and dissolve it in 1mL double distilled water, add 0.005g sodium borohydride, so that the molar ratio of selenium powder and sodium borohydride 1:2, stirred for 2 hours under ice-water bath conditions, prepared sodium selenium hydride stock solution for use, and its concentration was 0.0625M;

[0032] (b) Weigh 0.2473g MnCl 2 4H 2 O is dissolved in 100mL twice distilled water and makes the stock solution of the salt compound of Mn, and its concentration is 0.0125M, takes by weighing 0.9297g Zn (NO 3 ) 2 ·6H 2 O is dissolved in 100mL twice distilled water and makes the stock solution of the salt compound of Zn, and its concentration is 0.0125M;

[0033] (c) Take 140 μL of the stock solution of the transition metal Mn salt compound and 0.4000 g of mercaptosuccinic acid, the molar ratio of mercaptosuccinic acid to Mn is 1200:1, dilut...

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 belongs to the technical field of preparation of quantum dot nanometer materials, and particularly relates to an aqueous phase synthesis method for transition metal Mn doped ZnSe quantum dots. The method comprises the steps of utilizing inorganic metal water-soluble compounds such as zinc nitrate, manganese chloride and the like and carboxylic acid reagents containing sulfhydryl groups as raw materials, and doping transition metal Mn into ZnSe semi-conductor nano-particles in aqueous solution by a nucleation doping method. The method has the advantages of mild reaction conditions, simple and safe operation, and good repetitiveness, eliminates the toxicity caused by the use of heavy metal elements in the prior quantum dots, and successfully synthesizes non-toxic quantum dots emitting yellow visible light. The quantum dots can be taken as a fluorescent marker to be widely applied to cell and tissue imaging due to low toxicity, and can be applied to in vivo imaging research.

Description

technical field [0001] The invention belongs to the technical field of preparation of quantum dot nanometer materials, and in particular relates to an aqueous phase synthesis method of transition metal Mn-doped ZnSe quantum dots. Background technique [0002] Quantum dots, also known as semiconductor nanocrystals, are spherical or quasi-spherical particles, usually within 10nm in diameter. Due to the existence of quantum size effects, their photophysical and chemical properties have become one of the most active research areas at present. Traditional quantum dots are mainly composed of II-VI or III-V elements, their fluorescence can be adjusted by controlling the particle size and composition, and different fluorescence can be simultaneously excited by the same excitation light source. These unique fluorescent properties make them widely studied and used as fluorescent markers in the field of biomedical labeling. Although they have obvious advantages, their disadvantages c...

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): C09K11/88G01N21/64G01N21/31G01N23/207G01N24/10
Inventor 苏星光王超
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