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

Method for preparing semiconductor quantum dot fluorescent reagent for imprint display and extraction

A fluorescent reagent and semiconductor technology, which is applied in the field of preparation of high-efficiency liquid-type imprint display and extraction semiconductor quantum dot fluorescent reagents, can solve the problems of lack of liquid-type imprint display and extraction fluorescent reagents, etc., and achieves a wide and good range of practical objects. Visualization and extraction effect, effect with high fluorescence efficiency

Inactive Publication Date: 2010-12-08
INNER MONGOLIA UNIVERSITY
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] This patent aims at the current problem of lack of fluorescent reagents for the appearance of liquid imprints and extractions in the field of criminal science. Through special surface modification of II-VI semiconductor CdTe quantum dots, the surface is modified with thioglycolic acid and hydrazine hydrate, and With positive charge characteristics, a new type of high-efficiency imprint display and extraction semiconductor quantum dot fluorescence reagent is made

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
  • Method for preparing semiconductor quantum dot fluorescent reagent for imprint display and extraction
  • Method for preparing semiconductor quantum dot fluorescent reagent for imprint display and extraction
  • Method for preparing semiconductor quantum dot fluorescent reagent for imprint display and extraction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] 1. Semiconductor CdTe / NH for imprint visualization and extraction 3 + Preparation of Quantum Dot Fluorescence Reagent

[0021] Weigh 0.9850g Cd(ClO 4 ) 2 ·6H 2 O was added to 125ml of distilled water, 0.396ml of surface modifier thioglycolic acid was added, followed by 0.2g of 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC), nitrogen or argon After stirring for 10 minutes under the protection of gas, add 6ml of hydrazine hydrate to adjust the pH value of the solution to 10, and finally add 50ml of another precursor NaHTe with a concentration of 0.02mol / L, and heat under reflux and stir the reaction under the protection of nitrogen or argon. 1-96 hours, take samples at different reaction time periods to obtain nano-fluorescent quantum dots CdTe / NH with various fluorescent colors, positive surface, and good water solubility 3 + Liquid reagents for latent imprint extraction.

[0022] 2. Semiconductor CdTe / NH for imprint visualization and extraction ...

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 novel liquid semiconductor quantum dot fluorescent reagent, the surface of which has positive electricity property, for imprint display and extraction in the criminal investigation field. The liquid semiconductor CdTe / NH3+ quantum dot fluorescent reagent, the surface of which has positive electricity property, is prepared by surface modification of a traditional II-VI semiconductor CdTe quantum dot with a surface modified by mercaptoacetic acid through hydrazine hydrate. The fluorescent reagent solves the key technical problem of mutual repulsion and low affinity of the traditional mercaptoacetic acid modified semiconductor CdTe / COO- quantum dot fluorescent reagent under the alkali condition because the surface charge property is the same as the imprint residue charge property, so the fluorescent reagent has application advantages in the criminal science field. The liquid semiconductor quantum dot fluorescent reagent has the advantages of high fluorescence intensity, simple preparation process and good adhesion with fresh or old imprint, and is suitable for display and extraction of imprints on most impervious objects in criminal investigation.

Description

Technical field [0001] The present invention relates to a novel, high-efficiency preparation method of semiconductor quantum dot fluorescent reagents for the visualization and extraction of liquid imprints, in particular to a water-soluble semiconductor CdTe quantum dot as the core, and the surface is jointly modified and modified by thioglycolic acid and hydrazine hydrate A method for preparing a semiconductor quantum dot fluorescent reagent for the development and extraction of highly efficient liquid imprints with positive charge characteristics. The novel semiconductor quantum dot fluorescent reagent for imprint visualization and extraction can be applied to the visualization and extraction of potential imprints such as fingerprints at criminal scenes. Background technique [0002] The detection of criminal cases depends to a certain extent on the extraction and collection of trace evidence at the crime scene, which is of inestimable value in the identification of crimin...

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): C09K11/88C09K11/02A61B5/117A61B5/1171
Inventor 张军高峰韩家兴李群李倩孙秀峰郑金成李昕包丽茹
Owner INNER MONGOLIA UNIVERSITY
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