Application of zirconium-porphyrin metal-organic frameworks (MOFs) as fluorescent probes to detection of hydrogen phosphate ions

A metal organic framework, hydrogen phosphate technology, applied in the field of analysis and detection, can solve problems such as poor water solubility and difficult to recover, and achieve the effects of rapid operation, strong affinity and good dispersibility

Active Publication Date: 2017-09-19
临沂临联无机材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, selective and reliable sensing of anions in aqueous media is often a challenge due to the strong hydration effect of anions, so we need a strong affinity between the recognition site and the analyte
In addition, traditional fluorescent molecular probes are usually used in homogeneous detection systems, and their poor water solubility is difficult to recover

Method used

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  • Application of zirconium-porphyrin metal-organic frameworks (MOFs) as fluorescent probes to detection of hydrogen phosphate ions
  • Application of zirconium-porphyrin metal-organic frameworks (MOFs) as fluorescent probes to detection of hydrogen phosphate ions
  • Application of zirconium-porphyrin metal-organic frameworks (MOFs) as fluorescent probes to detection of hydrogen phosphate ions

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Embodiment 1

[0019] 1. Synthesis of fluorescent probes for zirconium-porphyrin MOFs:

[0020] 1) Synthesis of 5,10,15,20-tetrakis(4-carboxymethylphenyl)porphyrin (TCPP-OMe): First, freshly steamed pyrrole was distilled under reduced pressure, and 6.7 mL was added to a constant pressure dropping funnel (0.1mol) freshly distilled pyrrole and 30ml propionic acid for use. Add 250 mL of propionic acid and 16.5 g of methyl p-formylbenzoate (0.1 mol) into a 500 mL three-neck round bottom flask, stir rapidly in an oil bath and heat to 140° C. or slightly boil. Then add the mixed solution in the constant-pressure dropping funnel dropwise within 30 minutes, and continue the reflux reaction for 1 hour after the dropwise addition is completed. After cooling to room temperature, put it in a refrigerator at -4°C and let it stand overnight, and filter it with a Buchner funnel to obtain a crude product. The crude product is washed 2-3 times with secondary water and absolute ethanol, respectively. Dry in...

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Abstract

The invention discloses application of zirconium-porphyrin metal-organic frameworks (MOFs) as fluorescent probes to the detection of hydrogen phosphate ions. The zirconium-porphyrin MOFs are made by making 5,10,15,20-tetra(4-carboxylphenyl)porphyrin, benzoic acid and zirconium oxychloride react through a solvothermal method. In comparison with the prior art, according to the application, the zirconium-porphyrin MOFs are used as the fluorescent probes to detect phosphates; not only does the application have the advantages of being simple in method, being quick and being convenient to operate, but also Zr-O nodes in the zirconium-porphyrin MOFs have quite strong affinity interactions with the hydrogen phosphate ions; moreover, the zirconium-porphyrin MOFs have favorable dispersity in an aqueous solution and are easily recovered; thus, the detection on the hydrogen phosphate ions in the aqueous solution is realized.

Description

technical field [0001] The invention belongs to the field of analysis and detection, and in particular relates to the application of zirconium-porphyrin metal organic framework materials (MOFs) as fluorescent probes in the detection of phosphate. Background technique [0002] Phosphate is the basic building block of biological systems, such as nucleic acids, nucleotides, and nucleosides, which reacts as H at physiological pH 2 PO 4 - and HPO 4 2- form and play key roles in many biochemical processes. Furthermore, although it has a role as a nutrient in the aquatic environment, higher concentrations will cause serious environmental problems such as eutrophication. Therefore, a reliable, sensitive and highly selective method for the detection of phosphate in water is of great significance for human health and environmental protection. However, selective and reliable sensing of anions in aqueous media is often a challenge due to the strong hydration effect of anions, so w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
CPCG01N21/6428
Inventor 卢小泉陈海咏王晶姬玲霞汝凡何静陕多亮
Owner 临沂临联无机材料有限公司
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