Luminous metal-organic framework material with chemical sensing function as well as preparation method and application thereof

A metal-organic framework and chemical sensing technology, applied in luminescent materials, chemical instruments and methods, chemiluminescence/bioluminescence, etc., can solve the problems of expensive instruments, complicated pretreatment, and long time consumption, and achieve easy preparation and stability Good, simple preparation process

Inactive Publication Date: 2013-08-14
LIAOCHENG UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these traditional techniques can meet the basic requirements of analysis, most of them have disadvantages such as expensive instruments, complicated pretreatment, and long time consumption. Therefore, it is necessary to find a method that can quickly and easily detect nitrobenzene organic compounds.

Method used

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  • Luminous metal-organic framework material with chemical sensing function as well as preparation method and application thereof
  • Luminous metal-organic framework material with chemical sensing function as well as preparation method and application thereof
  • Luminous metal-organic framework material with chemical sensing function as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Synthesis of luminescent metal-organic framework materials: Weigh 29.8mg of zinc nitrate and 24.3mg of 5-(4-pyridyl)-1,3-benzenedicarboxylic acid and dissolve in 4.5ml of N,N-dimethylacetamide and 0.5ml of absolute ethanol The mixed solution was fully stirred, and then the mixed solution was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized in a synthesis oven at 100°C for 72 hours, and cooled to room temperature to obtain light yellow blocky crystals. The product was filtered, washed with N,N-dimethylacetamide, dried at room temperature, and collected. The yield was about 70%. The molecular structure of the compound is shown in figure 1 , the three-dimensional structure diagram of the compound is shown in figure 2 middle.

[0037] Such as image 3 with Figure 4 As shown, X-ray powder diffraction and thermogravimetric analysis show that the compound is of high purity, and its skeleton structure can be stabilized to 380° C. u...

Embodiment 2

[0039]Synthesis of luminescent metal-organic framework materials: Weigh 59.6mg of zinc nitrate and 24.3mg of 5-(4-pyridyl)-1,3-benzenedicarboxylic acid dissolved in 5ml of N,N-dimethylacetamide solution, stir well, and then The mixed solution was transferred into a stainless steel reactor lined with polytetrafluoroethylene, crystallized in a synthesis oven at 90°C for 72 hours, and cooled to room temperature to obtain light yellow blocky crystals. The product was filtered, washed with N,N-dimethylacetamide, dried at room temperature, and collected. The yield was about 67%.

Embodiment 3

[0041] Synthesis of luminescent metal-organic framework materials: Weigh 13.6mg of zinc chloride and 24.3mg of 5-(4-pyridyl)-1,3-benzenedicarboxylic acid and dissolve in 4.5ml of N,N-dimethylacetamide and 0.5ml of anhydrous The mixed solution of ethanol was stirred thoroughly, and then the mixed solution was transferred into a stainless steel reactor lined with polytetrafluoroethylene, crystallized in a synthesis oven at 90°C for 48 hours, cooled to room temperature, and light yellow blocky crystals were obtained. The product was filtered, washed with N,N-dimethylacetamide, dried at room temperature, and collected. The yield was about 72%.

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Abstract

The invention relates to a luminous metal-organic framework material with a chemical sensing function, a preparation method of the luminous metal-organic framework material, and an application of the material in detection of nitrobenzene organic matters. The preparation method comprises the following steps of: dissolving 5-(4-pyridyl)-1, 3-phthalic acid and zinc salt into an organic solvent in a certain proportion; and then synthesizing in a solvothermal way so as to obtain the luminous metal-organic framework material. The preparation method is simple in preparation process, high in material purity and excellent in stability. The synthesized metal organic framework material has the maximum emission wavelength of 381nm in water, and the fluorescence intensity of the synthesized metal organic framework material is gradually reduced as the unceasing increase of the concentration of the nitrobenzene organic matters, therefore, the material can be well applied to the detection of the nitrobenzene organic matters, and has the advantages of being fast in speed, simple, convenient, great in selectivity, high in sensitivity, etc.

Description

technical field [0001] The invention relates to a metal organic framework material, in particular to a light-emitting metal organic framework material with chemical sensing function and its preparation method and application. Background technique [0002] With the rapid development of modern industry, the types and quantities of organic compounds are increasing day by day, and the pollution of toxic organic compounds in the environment is very serious, which has aroused the general concern of the international community. Among them, nitrobenzene organic pollutants (such as nitrobenzene, p-nitrotoluene, 2,4-dinitrotoluene, trinitrotoluene, etc.) are highly toxic substances that can pass through the respiratory tract, digestive tract and skin, etc. It invades the human body, acts on the blood, liver and central nervous system, turns hemoglobin into methemoglobin, loses the ability to transport oxygen, endangers human life, and becomes one of the environmental priority pollutan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/06C09K11/06G01N21/76G01N21/64
Inventor 张庆富耿爱净张海娜孙德志
Owner LIAOCHENG UNIV
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