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A rare earth metal europium-based organic crystalline material, its preparation and its application in fluorescent recognition of antibiotics

A rare earth metal, metal-organic framework technology, applied in luminescent materials, fluorescence/phosphorescence, material excitation analysis, etc., can solve rare problems and achieve the effects of low temperature requirements, good reproducibility, and easy control

Active Publication Date: 2019-10-08
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are not many reports on Ln-MOFs fluorescent probes capable of detecting formaldehyde and benzaldehyde, and fluorescent Ln-MOFs that can simultaneously detect these two organic small molecules are even rarer.

Method used

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  • A rare earth metal europium-based organic crystalline material, its preparation and its application in fluorescent recognition of antibiotics
  • A rare earth metal europium-based organic crystalline material, its preparation and its application in fluorescent recognition of antibiotics
  • A rare earth metal europium-based organic crystalline material, its preparation and its application in fluorescent recognition of antibiotics

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Get triazine polycarboxylic acid 0.5mmol, 1mmol europium nitrate, 5mlDMF, 0.5mlH 2 O, 0.025ml with a concentration of 0.1mol / LNaOH, 0.3ml of 3.5M nitric acid, put into a stainless steel reaction kettle with a polytetrafluoroethylene liner, react at a constant temperature of 160°C for 72h, and cool down at a constant rate of 2-3°C / h to At room temperature, a colorless and transparent bulk crystal was obtained, that is, 4,4′,4″-s-triazine-1,3,5-tri-m-aminobenzoic acid rare earth Eu metal-organic framework crystalline material.

[0041] (2) Add 5mg of 4,4′,4″-s-triazine-1,3,5-tri-m-aminobenzoic acid rare earth Eu metal-organic framework crystal material to 10ml of the selected antibiotic concentration In an aqueous solution system of 0.1mmol / L (the antibiotics mentioned are FCC, FDZ, PCL, FZD, NFT, CAP, NZF, SMZ, RDZ, MDZ, DTZ, ODZ), ultrasonically shake at room temperature for 0.5h, take it out, put it into In a 4ml four-sided transparent cuvette, test the fluorescen...

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Abstract

An organic crystalline state material on the basis of rare earth metal europium, preparation, and fluorescent recognition of antibiotics. The invention belongs to the technical field of crystalline state materials. The chemical molecular formula of the organic crystalline state material is {H3O<+>[EuNa<0.5>(TATAB)(DMF)].(solvent)<x>}n, wherein x and n refers to positive infinity, and H3TATAB refers to 4,4',4"-s-triazine-1,3,5-tri-m-aminobenzoic acid. One Eu<3+> ion and 0.5 Na<+> ion are connected to form a trimetal-cluster basic unit (Eu-Na-Eu) through six oxygen atoms on three TATAB ligands, wherein the binuclear unit is connected to form a three-dimensional network frame through the ligands. The metal-organic frame material has simple synthesis process and high crystalline purity, has a novel structure, is high in stability in a water solution, and can recognize an antibiotic, ornidazole, from a plurality of antibiotic water solutions.

Description

technical field [0001] The present invention relates to 4,4′,4″-s-triazine-1,3,5-tri-m-aminobenzoic acid rare earth Eu metal organic framework material, specifically using triazine polycarboxylic acid as a ligand, rare earth metal europium and The main group metal sodium is a metal-organic framework material formed by a metal center, and the compound quickly and sensitively recognizes the antibiotic ornidazole (ODZ) through the fluorescence intensity in an aqueous solution system containing different antibiotics. Background technique [0002] In recent years, various fluorescent sensing materials have attracted great interest, among which lanthanide-metal-organic frameworks (Ln-MOFs) have attracted much attention, mainly because it combines the fluorescence characteristics of lanthanide ions with the porous properties of MOFs. It fits together perfectly. As the metal center of Ln-MOFs, lanthanide ions provide good fluorescence properties, mainly because the fluorescence of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C09K11/06G01N21/64
Inventor 李东升文国选赵君吴亚盘董文文张其春刘云凌
Owner CHINA THREE GORGES UNIV