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

Upconversion luminescent material with amino functional group coated on surface and application thereof in TNT (trinitrotoluene) detection

A light-emitting material and amino-functional technology, applied in the field of preparation of up-conversion light-emitting materials, can solve problems such as no reports, and achieve the effects of eliminating influence, stable dispersion and stable luminescence

Inactive Publication Date: 2013-10-30
BEIJING UNIV OF CHEM TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because its excitation light is in the near-infrared region, it can avoid the absorption quenching of other aromatic nitro compounds, but so far, no up-conversion luminescent materials have been reported for the detection of TNT

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
  • Upconversion luminescent material with amino functional group coated on surface and application thereof in TNT (trinitrotoluene) detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] a. Prepare Y(NO 3 ) 3 , Yb(NO 3 ) 3 , Er(NO 3 ) 3 Rare earth salt solution; prepare a HCl solution with a concentration of 1mol / L; prepare a NaF solution with a concentration of 1mol / L;

[0018] b. Add 0.1g of polyacrylic acid with a molecular weight of 1790-1810, 15ml of absolute ethanol, and 10mL of ethylene glycol into the reactor, and stir until the solution is uniform; continue to add 1.7ml of Y(NO 3 ) 3 Rare earth salt solution, 200 μl of Yb(NO 3 ) 3 Rare earth salt solution, 100 μl of Er(NO 3 ) 3 Rare earth salt solution, stirred for 10 minutes;

[0019] c. Add 4mL NaF solution to the reaction kettle and stir evenly; finally add 600μl HCl solution to the solution and stir magnetically for 10 minutes;

[0020] d. The reaction kettle was reacted at 190°C for 72 hours, and after natural cooling, it was washed with deionized water by centrifugation, and the product obtained was recorded as NaYF 4 : Yb 3+ -Er 3+ PAA;

[0021] e. Take 150 mg of NaYF pr...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of an upconversion luminescent material with amino functional group coated on the surface and application thereof in TNT (trinitrotoluene) detection, belonging to the technical field of nano material preparation. The invention improves the previously reported nano material preparation method, and synthesizes the upconversion luminescent material with amino functional group coated on the surface. The method disclosed by the invention is more simple and easier to operate. The synthesized upconversion luminescent material with amino functional group coated on the surface is monodisperse nanoparticles with uniform size, and has the advantages of stable dispersity in the water phase, high fluorescence intensity and high luminescent stability. The material implements specific recognition on TNT by using the amino functional group, and forms TNT anions to implement obvious quenching on green fluorescence, thereby carrying out high-selectivity high-sensitivity qualitative and quantitative detection on the TNT; and the invention can especially eliminate the influence of trinitrophenol (TNP) on detection.

Description

technical field [0001] The invention belongs to the technical field of preparation of nanometer materials, and in particular relates to a preparation method of an up-conversion luminescent material with amino functional groups wrapped on the surface and its application to TNT detection. technical background [0002] So far, many TNT detection methods, such as LC-MS, GC-MS, HPLC, solid-phase microextraction and surface-enhanced Raman spectroscopy, have been developed rapidly. These methods require complex instruments and are expensive to detect. The fluorescence detection method is widely used in the field of explosive molecular detection because of its high sensitivity and simple method. Commonly used fluorescent materials, such as organic dyes and quantum dots, cannot distinguish the interference of TNP, which greatly affects the selectivity of TNT detection. [0003] The up-conversion luminescent material has high fluorescence intensity and stable luminescence, and the ex...

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): C09K11/85C09K11/02G01N21/64
Inventor 汪乐余马英新
Owner BEIJING UNIV OF CHEM TECH
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