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Preparation and application of metal organic framework material

A metal-organic framework, a technology of zinc nitrate hexahydrate, which is applied to the preparation of metal-organic framework materials and the application field of selective fluorescent probes, can solve the problems of high cost, lack of portability, etc., and achieves easy raw materials and preparation methods. Simple, highly sensitive effects

Inactive Publication Date: 2021-01-01
何雅贵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some detection methods at this stage, such as ion mobility spectrometry, various imaging techniques, etc., can make the detection sensitivity higher and increase the accuracy of the test, but they also have many shortcomings. However, they also have many disadvantages, most notably high cost and lack of portability, while optical sensing technology has developed rapidly due to its low cost, high speed, and portability.

Method used

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  • Preparation and application of metal organic framework material
  • Preparation and application of metal organic framework material
  • Preparation and application of metal organic framework material

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A method for preparing a metal-organic framework material, the specific preparation process comprising:

[0026] S1: Zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O), benzimidazole and 2,6-dihydroxyterephthalic acid are sequentially added in the beaker according to the molar ratio of 3:0.6:0.4, then N,N-dimethylacetamide (DMAc) is added, and ultrasonically treated to make it Fully dissolve.

[0027] S2: Use a dropper to draw 5mL of the solution in the above step S1 into a glass bottle with a cap, then add 1mL of anhydrous ethanol solution, tighten it, put it in an oven, and react at 80°C for 24h, with a red color Blocky crystals were formed, filtered, and dried at 65 °C for 8 h to obtain the metal organic framework material.

Embodiment 2

[0029] A method for preparing a metal-organic framework material, the specific preparation process comprising:

[0030] S1: Zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O), benzimidazole and 2,6-dihydroxyterephthalic acid are sequentially added in the beaker according to the molar ratio of 3:1.2:0.9, then N,N-dimethylacetamide (DMAc) is added, and ultrasonically treated to make it Fully dissolve.

[0031] S2: Use a dropper to draw 5mL of the solution in the above step S1 into a glass bottle with a cap, then add 1mL of absolute ethanol solution, tighten it, put it in an oven, and react at 150°C for 48h, with a red color Blocky crystals were formed, filtered, and dried at 65 °C for 8 h to obtain the metal organic framework material.

Embodiment 3

[0033] A method for preparing a metal-organic framework material, the specific preparation process comprising:

[0034] S1: Zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O), benzimidazole and 2,6-dihydroxyterephthalic acid are sequentially added into the beaker according to the molar ratio of 3:0.7:0.5, then N,N-dimethylacetamide (DMAc) is added, and ultrasonically treated to make it Fully dissolve.

[0035] S2: Take 5mL of the solution in the above step S1 with a dropper and add it to a glass bottle with a cap, then add 1mL of absolute ethanol solution, tighten it, put it in an oven, and react at 90°C for 30h, with a red color Blocky crystals were formed, filtered, and dried at 65 °C for 8 h to obtain the metal organic framework material.

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Abstract

The invention discloses preparation and application of a metal organic framework material. The preparation method comprises the following steps: adding zinc nitrate hexahydrate (Zn(NO3)2.6H2O), benzimidazole and 2,6-dihydroxyl terephthalic acid into an N,N-dimethyl acetamide (DMAc) and ethanol solution in a certain volume ratio according to a certain molar ratio, and synthesizing the metal organicframework material by adopting a solvothermal method. The chemical formula of the metal organic framework material is C26H29N2O6Zn3, the space group is C2 / m, the material belongs to a triclinic system, a liquid fluorescence detection means is adopted, a compound suspension is prepared, fluorescence quenching is performed on nitrobenzene selectively, when the concentration of nitrobenzene reaches120 ppm, the fluorescence quenching rate of the solution reaches 86.6%, and the compound can be used as a fluorescence probe for detecting nitrobenzene.

Description

technical field [0001] The invention belongs to the field of synthesis of metal organic framework materials, and in particular relates to the preparation of a metal organic framework material and its application in selective fluorescent probes. Background technique [0002] Metal-organic framework polymers (MOFs), a class of promising crystalline microporous materials, have aroused great interest driven by the principles of coordination chemistry. According to the geometry of organic ligands and the coordination mode of inorganic metal ions or metal ion clusters, their structures can be designed with targeted properties. Coordination patterns of ions or clusters of metal ions, whose structures can be engineered with properties of interest. Key properties among the structural features of MOFs are ultra-high porosity (up to 90% free volume) and ultra-high internal surface area, which extends beyond the Langmuir surface area by 10,000 m 2 g -1 . Due to their stable structur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C09K11/06G01N21/64
CPCC08G83/008C09K11/06G01N21/643C09K2211/188G01N2021/6432
Inventor 何雅贵
Owner 何雅贵
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