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Preparation of luminescent crystal material capable of detecting 2,4,6-trinitrophenol with high sensitivity

A technology of trinitrophenol and luminescent crystals, applied in the direction of luminescent materials, polycrystalline material growth, crystal growth, etc., can solve the problems of low detection sensitivity, limited application range, complicated operation, etc., and achieve good optical stability and easy Simple effect of control and synthesis route

Active Publication Date: 2018-05-15
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although complex instruments such as instruments that simulate canine capabilities (electronic noses), gas chromatography-mass spectrometers, and surface-enhanced Raman spectrometers are widely used to detect aromatic nitro explosives, these devices are expensive to use and complicated to operate. , low detection sensitivity and other shortcomings, and in practical application, it is necessary to solve the problem of convenient movement of instruments and equipment, which greatly limits the application range, so it is necessary to find a low-cost and easy-to-operate method to detect nitroaromatic compounds

Method used

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  • Preparation of luminescent crystal material capable of detecting 2,4,6-trinitrophenol with high sensitivity
  • Preparation of luminescent crystal material capable of detecting 2,4,6-trinitrophenol with high sensitivity
  • Preparation of luminescent crystal material capable of detecting 2,4,6-trinitrophenol with high sensitivity

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Example 1: A luminescent crystal material {Cd(INA)(pytpy)(OH)·2H that can detect 2,4,6-trinitrophenol with high sensitivity 2 O} n The preparation comprises the following steps:

[0020] In the first step, add 0.1mmol cadmium nitrate, 0.2mmol isonicotinic acid and 0.05mmol 4'-(4-pyridine)-2,2':6',2"-tripyridine into 8mL of water and stir to obtain a stable suspension liquid;

[0021] In the second step, the suspension prepared in the first step is placed in a closed reactor and heated to 150 degrees Celsius for 80 hours to react for 80 hours. After slowly cooling down to room temperature at a rate of 3 degrees Celsius per hour, it is obtained by filtering, washing and drying crystal material.

[0022] Detection of 2,4,6-trinitrophenol detection performance: the prepared crystal material (1 mg) was dispersed in 3 ml of N,N-dimethylformamide, and different volumes of 2,4,6 -N,N-dimethylformamide solution of trinitrophenol (5 mmol per liter), and test its fluorescence ...

Embodiment 2

[0023] Example 2: A luminescent crystal material {Cd(INA)(pytpy)(OH)·2H that can detect 2,4,6-trinitrophenol with high sensitivity 2 O} n The preparation comprises the following steps:

[0024] In the first step, add 0.1mmol cadmium nitrate, 0.1mmol isonicotinic acid and 0.1mmol 4'-(4-pyridine)-2,2':6',2"-tripyridine into 8mL of water and stir to obtain a stable suspension liquid;

[0025] In the second step, the suspension prepared in the first step is placed in a closed reaction kettle and heated to 170 degrees Celsius for 72 hours, and slowly cooled to room temperature at a rate of 3 degrees Celsius per hour, then filtered, washed and dried to obtain crystal material.

[0026] Detection of 2,4,6-trinitrophenol detection performance: the prepared crystal material (1 mg) was dispersed in 3 ml of N,N-dimethylformamide, and different volumes of 2,4,6 -N,N-dimethylformamide solution of trinitrophenol (5 mmol per liter), and test its fluorescence intensity under the excitatio...

Embodiment 3

[0027] Example 3: A luminescent crystal material {Cd(INA)(pytpy)(OH)·2H that can detect 2,4,6-trinitrophenol with high sensitivity 2 O} n The preparation comprises the following steps:

[0028] In the first step, add 0.1mmol cadmium nitrate, 0.05mmol isonicotinic acid and 0.05mmol 4'-(4-pyridine)-2,2':6',2"-tripyridine into 8mL of water and stir to obtain a stable suspension liquid;

[0029] In the second step, the suspension prepared in the first step is placed in a closed reaction kettle and heated to 160 degrees Celsius for 72 hours. After slowly cooling down to room temperature at a rate of 3 degrees Celsius per hour, it is obtained by filtering, washing and drying crystal material.

[0030] Detection of 2,4,6-trinitrophenol detection performance: the prepared crystal material (1 mg) was dispersed in 3 ml of N,N-dimethylformamide, and different volumes of 2,4,6 -N,N-dimethylformamide solution of trinitrophenol (5 mmol per liter), and test its fluorescence intensity und...

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Abstract

The invention discloses preparation of a luminescent crystal material {Cd(INA)(pytpy)(OH).2H2O}n capable of detecting 2,4,6-trinitrophenol with high sensitivity. The preparation method comprises the following steps: adding cadmium nitrate, isonicotinic acid and 4'-(4-pyridine)-2,2':6',2''-tripyridine into water, carrying out stirring to prepare a stable suspension, placing the suspension in a closed reaction kettle for a heating reaction, then slowly lowering the temperature to room temperature, and filtering, washing and drying the product to obtain the luminescent crystal material. The preparation method provided by the invention has the advantages of obtaining the luminescent crystal material {Cd(INA)(pytpy)(OH).2H2O}n capable of detecting 2,4,6-trinitrophenol with high sensitivity.

Description

a technical field [0001] The invention relates to the preparation of explosive and toxic nitroaromatic compound detection materials, in particular to a luminescent crystal material {Cd(INA)(pytpy)(OH) which can detect 2,4,6-trinitrophenol with high sensitivity 2H 2 O} n Preparation of [INA = isonicotinic acid; pytpy = 4'-(4-pyridine)-2,2':6',2"-tripyridine]. Two background technology [0002] In recent years, chemical explosives have been widely used in terrorist attacks against some countries, posing a serious threat to people's daily life. Most chemical explosives contain nitroaromatic compounds, such as nitrobenzene (NB), 2,4,6-trinitrotoluene (TNT), 1,3,5-trinitrobenzene (TNB), 2,4 , 6-trinitrophenol (TNP), 2,4-dinitrotoluene (2,4-DNT), p-nitrotoluene (4-NT), etc. It is worth noting that these nitroaromatic compounds also widely exist in pesticides, dyes, fireworks, and medicines. During the production process, it will pollute groundwater and soil and cause harm to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/54C30B7/14C07F3/08C09K11/06
CPCC07B2200/13C07F3/003C09K11/06C09K2211/188C30B7/14C30B29/54
Inventor 张金方吴俊洁冯姣阳
Owner JIANGNAN UNIV