Method for detecting organic amine volatile gas based on perylene-3, 4, 9, 10-tetracarboxylic dianhydride

A technology of perylenetetracarboxylic dianhydride and volatile gases, which is applied in the field of detection of volatile gases of organic amines, can solve the problems that the volatile gases of organic amines cannot be detected quickly, and achieve the purpose of improving the sensing performance of intensity regulation, enhancing sensitivity, Meet the effect of on-site measurement

Active Publication Date: 2019-04-05
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem that the organic amine volatile gas in the above-mentioned prior art cannot be quickly detected, the present invention aims to provide a method for detecting organic amine volatile gas based on perylenetetracarboxylic dianhydride

Method used

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  • Method for detecting organic amine volatile gas based on perylene-3, 4, 9, 10-tetracarboxylic dianhydride
  • Method for detecting organic amine volatile gas based on perylene-3, 4, 9, 10-tetracarboxylic dianhydride
  • Method for detecting organic amine volatile gas based on perylene-3, 4, 9, 10-tetracarboxylic dianhydride

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Experimental program
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Effect test

Embodiment 1

[0021] (1) Synthesis of sensing compound 3

[0022] Take 400mg3,4,9,10-perylenetetracarboxylic dianhydride (compound 1) and 1g octylamine (compound 2) and dissolve in 50ml methanol solution. Reflux for 5 hours and cool to room temperature. The reaction solution was acidified with 20 ml of saturated hydrochloric acid and stirred overnight. The product was suction filtered with a 0.45 μm filter membrane. The resulting solid was washed with methanol and deionized to neutral, and dried at 60°C to obtain the amide product (compound 3,9-octyl-1H-isochromeno[6',5',4':10,5,6]anthra[ 2,1,9-def]isoquinoline-1,3,8,10(9H)-tetraon), its chemical formula is as follows:

[0023]

[0024] (2) Preparation of sensing materials

[0025] Add 10 groups of 1mg single-walled carbon nanotubes into 15ml tetrahydrofuran, sonicate for 30min to disperse the single-walled carbon nanotubes in tetrahydrofuran; add 9mg of compound 3 to the THF solution of single-walled carbon nanotubes, and sonicate f...

Embodiment 2

[0033] (1) Synthesis of sensing compound 5

[0034] Mix KOH (50% aq, 40ml), TBAB (0.40g), 1,6-dibromofluorene (compound 4) 2.00g, stir at room temperature for 25min, wash with 100ml of water after the reaction, CHCl 2 Extraction (20ml×3). The organic phase was washed with 1M HCl, then with water, anhydrous MgSO 4 Dry, remove the solvent, and separate by column chromatography to obtain a pale yellow solid. Add 1.6 g of product to 0.33 g NaN 3 10ml of DMSO solution was stirred at 60°C for 2h. After the reaction, wash with water, extract with ether, wash the organic phase with water, anhydrous MgSO 4 After drying, the solvent was removed, and column chromatography separated to obtain a pale yellow oily liquid. The product (2mmol) was added to a solution of triphenylphosphinepalladium (1.572g, 6mmol) in THF and water (21ml / 3ml) and stirred at room temperature for 12 hours. Product (100mg, 0.19mmol) was added Zn(CH 3 COO) 2 (1mg, 2%) was put into a 50mL reaction flask, 5ml ...

Embodiment 3

[0039](1) Synthesis of sensing compound 7

[0040] A stirred mixture of 3,4,9,10-perylenetetracarboxylic dianhydride (5g, 12.7mmol, compound 1), chlorosulfonic acid (57.2g, 0.5mol) and iodine (0.9g, 3.45mmol) was heated to 60- 70°C, stirring for 20 hours. At room temperature, the mixture was treated with ice water. The solid was filtered, washed with ice water and dried in vacuo. The product (3.3g, 6.27mmol), n-octylamine (3.2g, 13.28mmol, compound 2) was mixed with 25ml of NMP (N-methylpyrrolidone), and the suspension was heated to reflux at 110°C for 24h, cooled to room temperature, and separated by filtration The resulting compound was obtained as a dark red crystalline product, which was washed with methanol, acetic acid and methanol respectively, and finally washed with ether, and dried in vacuum at 50°C for 24h. The above product (0.72mmol, 541.8mg) and 3,5-difluorophenol (6.75mmol, 878.1mg, compound 6) and potassium carbonate (7.25mmol, 1g) were added to 20ml N-methy...

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Abstract

The present invention relates to a method for detecting organic amine volatile gas based on perylene-3, 4, 9, 10-tetracarboxylic dianhydride. The method comprises the steps of: S1, providing a sensingcompound with perylene-3, 4, 9, 10-tetracarboxylic dianhydride as a main structure; S2 non-covalently modifying the sensing compound onto a single-walled carbon nanotube to form a sensing material; S3, loading the sensing material on the surface of the electrode to form a sensing device; and S4, placing he sensing device in the atmosphere containing organic amine volatile gas for detection. According to the method provided by the present invention, the sensing compound is adsorbed on the surface of the single-walled carbon nanotube through the non-covalent interaction, and the sensing compound can be combined with the organic amine volatile gas through the non-covalent interaction, so that the related charge transfer signal of the sensing compound is transferred to the single-walled carbon nanotube, and the organic amine volatile gas can be detected by using the performance of the single-walled carbon nanotube in which resistance change occurs when charge transfer occurs.

Description

technical field [0001] The invention relates to the technical field of gas sensing, in particular to a method for detecting volatile gases of organic amines based on perylenetetracarboxylic dianhydride. Background technique [0002] Organic amines are one of the most important nitrogen-containing organic compounds, widely used in chemical industry, rubber and medical and health industries. They generally have a low olfactory threshold. When it reaches a certain concentration in the air, it not only smells, but also endangers people's health. With increasing concerns in public health, food safety, environmental monitoring, and other related fields, there is an urgent need for highly sensitive and selective detection of low-concentration volatile organic amine gases. [0003] At present, the commonly used methods for detecting volatile gases of organic amines mainly include gas chromatography-mass spectrometry, high performance liquid chromatography-stripping voltammetry, el...

Claims

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Application Information

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IPC IPC(8): G01N27/12
CPCG01N27/127
Inventor 陈锦明贺庆国程建功
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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