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Terbium/ytterbium iso-rare-earth metal-organic fluorescent material, as well as preparation method and application thereof

A technology of fluorescent materials and rare earth metals, applied in the preparation of terbium/ytterbium hetero-rare earth metal-organic fluorescent materials, and the application field of fluorescence detection of different types of antibiotics, achieving high yield, low requirements for reaction conditions, and easy control

Active Publication Date: 2020-01-17
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, metal-organic light-emitting materials that can achieve efficient and recyclable fluorescence detection of different types of antibiotics through one material have not been reported yet.

Method used

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  • Terbium/ytterbium iso-rare-earth metal-organic fluorescent material, as well as preparation method and application thereof
  • Terbium/ytterbium iso-rare-earth metal-organic fluorescent material, as well as preparation method and application thereof
  • Terbium/ytterbium iso-rare-earth metal-organic fluorescent material, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Weigh 0.0167g of organic ligand, 0.0271g of terbium nitrate hexahydrate, 1mL of N,N-dimethylformamide, 1mL of polyethylene glycol-400 and 3mL of deionized water, adjust the pH of the solution to 2.0 with 6M nitric acid, add In a Teflon-lined stainless steel reactor, react at a constant temperature of 100°C for 24 hours, and cool down to room temperature to obtain a colorless and transparent terbium rare earth crystal material.

[0038] The single crystal of the terbium rare earth organic crystalline material synthesized by the present invention uses the small molecule type X-ray single crystal diffractometer of Japan Rigaku Company to carry out structure determination on the crystal, utilizes the Mo Kα ray monochromated by the graphite monochromator, at 173K The data such as diffraction intensity and unit cell parameters were measured, and the collected data were corrected empirically by using scanning technology. The results obtained were analyzed by the direct method u...

Embodiment 2

[0043] Weigh 0.0167g of organic ligand, 0.0181g of terbium nitrate hexahydrate, 0.0093g of ytterbium nitrate hexahydrate, 1mL N, N-dimethylformamide, 1mL polyethylene glycol-400 and 3mL deionized water, adjust the pH of the solution with 6M nitric acid 2, put it into a stainless steel reaction kettle with a Teflon lining, react at a constant temperature of 100°C for 24 hours, and cool down to room temperature to obtain a colorless and transparent metal organic light-emitting material. It is determined that the amount ratio of rare earth element material is Tb / Yb by ICP inductively coupled plasma atomic emission spectrometry is 0.68:0.32, by powder XRD collection of patterns (attached figure 1 ) to determine that the luminescent material has the same crystal structure as the terbium rare earth crystal material in Example 1, and the Simulated line is the compound [Tb(tzbt)(H 2 O) 2 ] n The theoretical value of XRD obtained from single crystal data simulation, [Tb(tzbt)(H 2 O)...

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Abstract

The invention discloses a multifunctional iso-rare-earth metal-organic fluorescent material. A chemical formula of the fluorescent material is [Tb0.68Yb0.32(tzbt)(H2O)2]n, wherein tzbt represents 1-(1, 3, 4-triazolyl)-2, 4, 6-trimesic acid radical, a valence state is a negative tervalence, and n only represents that an internal molecule assembly of the material is infinite alternating arrangementof simplest molecular formulas. A preparation method comprises the steps of adopting the 1-(1, 3, 4-triazolyl)-2, 4, 6-trimesic acid as a ligand, adopting rare earth terbium and ytterbium ions as a metal center, and the terbium / ytterbium iso-rare-earth metal-organic fluorescent material is synthesized through a solvothermal method. The terbium / ytterbium iso-rare-earth metal-organic fluorescent material synthesized by the invention has good water stabilization, the high-efficiency recyclable fluorescence detection of sulfamethazine (SMZ), ronidazole (RDZ) and nitrofuran antibiotics (NZF and NFT) can be realized through regulating different excitation wavelengths, and the material has the advantages of simplicity and convenience in synthesis, high sensitivity, recyclability and the like.

Description

technical field [0001] The invention belongs to the field of fluorescent detection materials, and in particular relates to a preparation method of a multifunctional terbium / ytterbium hetero-rare earth metal-organic fluorescent material, and an application in efficient and recyclable fluorescent detection of different antibiotics under different excitation wavelengths. Background technique [0002] As we all know, the abuse of antibiotics has long attracted people's attention. What is even more noteworthy is that the antibiotic usage rate in China is three times higher than that in Europe and the United States. In 2013, the antibiotic pollution map given by the Chinese Academy of Sciences showed that of the 162,000 tons of antibiotics used in China in 2013, more than 50,000 tons of antibiotics were discharged into the water and soil environment. What flows into the environment includes not only the antibiotics discharged in the form of raw drugs, but also the discharge of dom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C07D249/08G01N5/00G01N21/3563G01N21/64G01N21/73G01N23/207
CPCC09K11/06C07D249/08G01N21/73G01N5/00G01N21/643G01N23/207G01N21/3563G01N2021/6432G01N2021/6417C07B2200/13C09K2211/182C09K2211/1007C09K2211/1059
Inventor 董文文于晓燕鲍伟方义铭赵君李东升
Owner CHINA THREE GORGES UNIV
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