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Application of luminous metal organic framework material in detecting nitro aromatic hydrocarbon pollutant

A metal-organic framework, organic pollutant technology, applied in the preparation of luminescent materials, organic compounds, organic chemistry and other directions, can solve the problems of expensive equipment, bulky, low sensitivity, etc., achieve simple preparation methods, high material purity, Responsive effect

Inactive Publication Date: 2015-03-25
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Body detection technology has disadvantages such as complex structure, expensive equipment, bulky volume, and low sensitivity.

Method used

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  • Application of luminous metal organic framework material in detecting nitro aromatic hydrocarbon pollutant
  • Application of luminous metal organic framework material in detecting nitro aromatic hydrocarbon pollutant
  • Application of luminous metal organic framework material in detecting nitro aromatic hydrocarbon pollutant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The synthesis of embodiment 1 complex:

[0026] Zn(NO 3 ) 2 ·6H 2 A mixture of O (0.0298g, 0.05mmol), 5-aminoisophthalic acid (0.0091g, 0.05mmol), 4mL DMF and 4mL distilled water was placed in a polytetrafluoroethylene liner and reacted at a constant temperature of 85°C for 120 hours. Then naturally cooled to room temperature, filtered, the resulting product was washed with DMF, and dried at room temperature to obtain block crystals C 16 h 14 N 2 o 10 Zn 2 , Theoretical value (%): C, 36.57; H, 2.67; N, 5.33; Experimental value (%): C, 35.87; H, 2.29; N, 5.73. The crystal structure was determined using a BRUKER SMART 1000 X-ray diffractometer, using Mokα rays ( ) is the incident radiation, the diffraction points are collected by ω-2θ scanning, and the unit cell parameters are obtained through the least square method correction, and the crystal structure is obtained from the difference Fourier electron density map using the SHELXL-97 direct method, and the Lor...

Embodiment 2

[0027] Embodiment 2 (p-chloronitrobenzene sensing), process is as follows:

[0028] First measure the fluorescence intensity F of the sensing material in the absence of p-chloronitrobenzene 0 , then add the p-chloronitrobenzene (0 μmol, 0.02 μmol, 0.04 μmol, 0.06 μmol, 0.08 μmol, 0.10 μmol, 0.12 μmol, 0.14 μmol, 0.16 μmol, 0.18 μmol, 0.20 μmol) of the amount of gradient substance, and measure different substances The fluorescence intensity F of sensing material when the amount p-chloronitrobenzene exists, draw the curve of fluorescence intensity F changing with the amount of p-chloronitrobenzene substance, see image 3 , the test results show that the fluorescence intensity decreases gradually with the increasing amount of p-chloronitrobenzene; when the amount of p-chloronitrobenzene reaches 0.20μmol, the degree of fluorescence quenching reaches 77.51%.

Embodiment 3

[0029] Embodiment 3 (p-nitroaniline sensing), the process is as follows:

[0030] First measure the fluorescence intensity F of the sensing material in the absence of p-nitroaniline 0 , and then add the p-nitroaniline (0μmol, 0.02μmol, 0.04μmol, 0.06μmol, 0.08μmol, 0.10μmol, 0.12μmol, 0.14μmol, 0.16μmol, 0.18μmol) of the amount of gradient substance, and measure the amount of p-nitroaniline of different substances Fluorescence intensity F of the sensing material in the presence of p-nitroaniline, draw the curve of fluorescence intensity F varying with the amount of p-nitroaniline substance, see Figure 4 , the test results show that the fluorescence intensity decreases gradually with the increasing amount of p-nitroaniline substance; when the amount of p-nitroaniline substance added reaches 0.20μmol, the degree of fluorescence quenching reaches 53.39%.

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Abstract

The invention relates to an application of a luminous metal organic framework material in detecting a nitro aromatic hydrocarbon pollutant. The MOFs (Metal-Organic Frameworks) as a fluorescent sensing material can fast, easily, conveniently and sensitively realize the detection on a trace amount of nitro aromatic hydrocarbon, is gradually quenched in fluorescence intensity with the content increase of the nitro aromatic hydrocarbon pollutant and achieves different fluorescent quenching degree on different nitro aromatic hydrocarbon compounds. Thus, the luminous metal-organic framework material has potential application prospect on the aspects of detection of an exploder and an environment and the like.

Description

technical field [0001] The invention relates to the application of a transition metal organic framework in the detection of nitroaromatic pollutants. technical background [0002] Nitroaromatics such as 2,4,6-trinitrotoluene (TNT) and 2,4-dinitrotoluene (DNT) are all important explosive components, which seriously affect social stability and national security. Toxicity and potential carcinogenic effects. Therefore, the detection of explosives has attracted great attention from all countries. Many countries have invested a lot of money in research in the scientific field. The current detection technologies mainly include body detection technology and micro-trace detection technology. Body detection technology has disadvantages such as complex structure, expensive equipment, bulky volume, and low sensitivity. The fluorescent sensing method in the micro-trace detection technology has (1) good selectivity; (2) high sensitivity; (3) can be made into a small instrument and is ea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C229/76C07C227/18C09K11/06G01N21/64
Inventor 许金霞董才富曹宏杰龚红君喻婧王凤勤
Owner TIANJIN POLYTECHNIC UNIV
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