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Zinc metal organic framework compound and preparation method and application thereof

An organic framework and compound technology, applied in the field of zinc metal organic framework compounds and their preparation, can solve the problems of expensive instruments, low cost of fluorescence detection methods, and no fluorescence detection of chloroform, etc.

Active Publication Date: 2019-11-01
TAIYUAN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing chloroform detection method mainly contains means such as mass spectrometry, NMR, gas chromatography or liquid chromatography (HS / GC and HS / GC-MS method measure the method research of chloroform residual amount in toothpaste, Wang Chao, Analysis and Testing Journal, November 2005, Volume 24; Determination of chloroform residues in Taoerqi powder by headspace gas chromatography, Zhou Xiaoping, China Health Inspection Journal, Volume 17, Issue 4, April 2007), but the equipment and instruments used in the above detection methods Expensive, while fluorescent detection methods are inexpensive
However, there is no relevant report about fluorescence detection of chloroform in the prior art

Method used

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  • Zinc metal organic framework compound and preparation method and application thereof
  • Zinc metal organic framework compound and preparation method and application thereof
  • Zinc metal organic framework compound and preparation method and application thereof

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preparation example Construction

[0030] The present invention provides a method for preparing the zinc metal organic framework compound described in the above technical scheme, comprising the following steps:

[0031] Mix 1,3,5-tris(1-imidazolyl)benzene, zinc-containing raw materials, 2,5-dichloroterephthalic acid and a mixed solvent to obtain a suspension;

[0032] The suspension is subjected to a solvothermal reaction to obtain a zinc metal organic framework compound.

[0033] In the present invention, unless otherwise specified, the required preparation materials are commercially available products well known to those skilled in the art.

[0034]The invention mixes 1,3,5-tri(1-imidazolyl)benzene, a zinc-containing raw material, 2,5-dichloroterephthalic acid and a mixed solvent to obtain a suspension. In the present invention, the 1,3,5-tri(1-imidazolyl)benzene (abbreviated as tib) is preferably according to existing literature (W.Zhao, Y.Song, T.Okamura, J.Fan, W.Y.Sun , N.Ueyama.Inorg.Chem., 2005,44,333...

Embodiment 1

[0047] 8.2mg tib, 6.2mg H 2 BDC-Cl 2 and 14.9 mg of zinc nitrate hexahydrate were dissolved in a mixed solvent composed of N,N-dimethylformamide (2 mL), methanol (2 mL) and water (4 mL), and stirred and mixed at 300 r / min to obtain a suspension liquid;

[0048] Pour the suspension into a reaction kettle and react at 85°C for 3 days; after the reaction, the resulting material is naturally cooled to room temperature to obtain a colorless transparent crystal (zinc metal organic framework compound) with the chemical formula [Zn 2 (tib) 2 (BDC-Cl 2 ) (HBDC-Cl 2 ) 2 ], denoted as ZnL; The yield is 80%.

Embodiment 2

[0050] 8.2mg tib, 6.2mg H 2 BDC-Cl 2 and 29.8mg of zinc nitrate hexahydrate were dissolved in a mixed solvent composed of N,N-dimethylformamide (2mL), methanol (2mL) and water (4mL), and stirred and mixed at 300r / min to obtain a suspension liquid;

[0051] Pour the suspension into a reaction kettle and react at 90°C for 3 days; after the reaction, the resulting material is naturally cooled to room temperature to obtain a colorless transparent crystal (zinc metal organic framework compound) with the chemical formula [Zn 2 (tib) 2 (BDC-Cl 2 ) (HBDC-Cl 2 ) 2 ], denoted as ZnL; The yield is 50%.

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Abstract

The invention belongs to the technical field of metal organic framework compounds, and particularly relates to a zinc metal organic framework compound and a preparation method and an application thereof. The chemical formula of the zinc metal organic framework compound is [Zn2(tib)2(BDC-Cl2)(HBDC-Cl2)2], the compound is a metal organic framework compound of zinc ions and a mixed ligand formed by 1,3,5-tri(1-imidazolyl)benzene and 2,5-dichloroterephthalic acid. The zinc metal organic framework compound provided by the invention has a function of identifying chloroform by fluorescence, can be used for preliminary screening detection of chloroform in various chemical solutions, and has a relatively great application prospect.

Description

technical field [0001] The invention relates to the technical field of metal organic framework compounds, in particular to a zinc metal organic framework compound and its preparation method and application. Background technique [0002] Metal-Organic Frameworks (MOFs) are a class of coordination compounds with special structures, which are widely used in industrial catalysis, optical materials, medical science, storage materials, mechanical engineering and many other fields. Recently, a number of studies have found that metal-organic framework compounds with fluorescent functions constructed by metal ions such as zinc and cadmium have very broad application prospects in the identification of dangerous goods, explosives, and industrial raw materials. [0003] Chloroform, also known as chloroform, is an important industrial raw material and solvent. Chloroform is widely used in various reactions in chemical production, so it often exists in some synthetic intermediates and so...

Claims

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Application Information

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IPC IPC(8): C08G83/00C09K11/06G01N21/64
CPCC08G83/008C09K11/06C09K2211/188G01N21/643
Inventor 马翔滑继爱贺绍阳马壮飞
Owner TAIYUAN INST OF TECH
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