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A method for detecting clodronate gas and/or sarin gas based on charge transfer complex

A technology of diethyl clodronate and charge transfer, which is applied in the field of gas sensing, can solve the problem that sarin poisonous gas cannot be quickly detected, achieve high efficiency and high specificity detection, realize specific sensing, and high Effects of Electron and Hole Mobility

Active Publication Date: 2021-09-03
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems that the sarin poisonous gas in the above-mentioned prior art cannot be quickly detected, the present invention aims to provide a method for detecting clodronate gas and / or sarin poisonous gas based on a charge transfer complex

Method used

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  • A method for detecting clodronate gas and/or sarin gas based on charge transfer complex
  • A method for detecting clodronate gas and/or sarin gas based on charge transfer complex
  • A method for detecting clodronate gas and/or sarin gas based on charge transfer complex

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Preparation of sensing materials

[0025] Add 1.64mg 7,7,8,8-tetracyanoquinodimethane (TCNQ) into 4ml tetrahydrofuran to dissolve, 2.04mg N,N,N',N'-tetramethyl-p-phenylenediamine (TMPD , Compound 1) was dissolved in 4ml of tetrahydrofuran, and ultrasonicated for 30 minutes to make the solution clear; the TMPD and TCNQ solutions with volume ratios of 1ml:2ml, 2ml:1ml, and 1ml:1ml were divided into three groups and ultrasonicated for 30 minutes to obtain uniform charge transfer Solution of complex (CT complex) 1, the first sensing material.

[0026] (2) Preparation of sensor devices

[0027] Use a pipette gun to transfer the solution of each group of CT complex 1 to the surface of the interdigital electrode in an amount of 10 μl each time, and repeat it several times after natural air drying until the resistance of the interdigital electrode reaches the level of 1-70MΩ, and dry for 10 minutes Afterwards, a thin film with high sensitivity and specificity to diethyl c...

Embodiment 2

[0036] (1) Preparation of sensing materials

[0037] The charge transfer complex ( CT complex) 2 solution, that is, the second sensing material.

[0038] (2) The remaining steps are the same as in Example 1.

[0039] The response to saturated DCP gas concentration was measured using CT complex 2 with a 1:1 molar ratio of TMB to TCNQ.

Embodiment 3

[0041] (1) Preparation of sensing materials

[0042] 2,3,5,6-tetrafluoro-7,7',8,8'-tetracyanodimethyl-p-benzoquinone (F4-TCNQ) and N,N,N',N'-tetramethyl-p-phenyl Diamines (TMPD, compound 1) were mixed to obtain a solution of charge transfer complex (CT complex) 3, the third sensing material.

[0043] (2) The remaining steps are the same as in Example 1.

[0044] The response to saturated DCP gas concentration was measured using CT complex 3 with a 1:1 molar ratio of TMPD to F4-TCNQ.

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Abstract

The invention relates to a method for detecting diethyl clodronate gas and / or sarin poisonous gas based on a charge transfer complex, comprising the steps of: comprising a first compound containing N,N dimethyl aromatic amine structure and a compound containing tetracyanide The second compound of the dimethyl-p-benzoquinone structure obtains a solution of the charge-transfer complex through intermolecular charge-transfer interactions in a solvent; the sensing material is loaded on the surface of the electrode to form a sensing device; the sensing device is placed in a chlorophosphine-containing detection in the atmosphere of diethyl acetate gas and / or sarin gas. In the present invention, the charge transfer complex formed by mixing the first compound and the second compound in a solvent has high mobility of electrons and holes, and maintains the independent chemical and physical properties of the first compound and the second compound while compounding , can be used as an electrochemical sensing probe to detect sarin poisonous gas, which solves the problems of low detection sensitivity, low specificity, complicated means and high cost of sarin poisonous gas in the prior art.

Description

technical field [0001] The invention relates to the technical field of gas sensing, and more particularly relates to a method for detecting diethyl clodronate gas and / or sarin gas based on a charge transfer complex. Background technique [0002] Although there are some traditional detection methods that can be used to detect sarin gas, such as ion mobility spectrometry, mass spectrometry, bioenzyme chemical sensors, surface acoustic waves, fluorescence detection, etc. However, these methods have disadvantages such as high cost, complex detection methods, unsatisfactory sensitivity and specificity, expensive and non-portable instruments, and cannot meet the characteristics of high sensitivity, high specificity, low cost and portability on site. [0003] Electrochemical detection has the advantages of high detection efficiency and mature and convenient signal processing. However, because traditional electrochemical methods need to be used under conditions such as high temperat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/12
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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