Organophosphorus compound sensor and preparation method thereof

A compound and organophosphorus technology, applied in the field of chemical sensors, can solve the problems of poor selectivity, complex preparation methods, poor stability, etc., and achieve the effects of good sensitivity and simple post-processing

Inactive Publication Date: 2019-12-31
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of complex preparation methods of organophosphorus compound sensors in the prior art, and the prepared organophosphorus compound sensors have low sensitivity, poor selectivity, and poor stability, and provide a sensor with high sensitivity, good selectivity, and excellent stability. Organophosphorus compound sensor and preparation method thereof

Method used

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  • Organophosphorus compound sensor and preparation method thereof
  • Organophosphorus compound sensor and preparation method thereof
  • Organophosphorus compound sensor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] An organophosphorus compound sensor is composed of a gold interdigitated electrode and a functional conductive polymer film deposited on its surface, and its preparation steps are as follows:

[0034] (1) Dry the gold interdigitated electrode after cleaning: wash with detergent, deionized water, acetone, dichloromethane and isopropanol in sequence under the action of ultrasound, and the washing time is 15 minutes each time; among them, the gold interdigitated electrode The finger length is 1400 μm, the finger width is 5 μm, the interdigital spacing is 3 μm, and the number of interdigital pairs is 60;

[0035] (2) FeCl 3 The solution was dropped on the gold interdigitated electrode, and the FeCl was obtained by the spin-coating method 3 Membrane, rotating speed is 6000rpm, time is 60s; Among them, FeCl 3 The mass concentration (c) of solution is 9wt%, and solvent is n-butanol, FeCl 3 The thickness (h1) of the film is 103 nm;

[0036] (3) will be coated with FeCl 3 T...

Embodiment 2～15

[0044] An organophosphorus compound sensor, the preparation method of Examples 2-15 is basically the same as that of Example 1, the difference is that the parameters in the preparation process are different, see Table 1 for details, wherein, M represents a functionalized conductive polymer, see for details Table 2, the performance indicators of the obtained organophosphorus compound sensor are shown in Table 4; wherein, the organophosphorus compound sensor obtained in Example 5 is selected for conductivity test and cyclic response test, and the results are as follows figure 1 with Figure 4 shown, where N 2 It means that the sensor is desorbed with nitrogen gas at this place.

[0045] The preparation parameter of table 1 embodiment 2~15

[0046]

[0047]

[0048] Table 2 The number and molecular formula of the functionalized conductive polymer monomer

[0049]

[0050]

Embodiment 16～20

[0052] An organophosphorus compound sensor, the preparation method of Examples 16-20 is basically the same as that of Example 1, the difference is that the parameters of step (1) in the preparation process are different, see Table 3 for details, the prepared organophosphorus compound sensor The performance indicators are shown in Table 4.

[0053] The preparation parameter of table 3 embodiment 16~20

[0054]

[0055] Table 4 Performance parameters of organophosphorus compound sensors

[0056]

[0057]

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Abstract

The invention relates to an organophosphorus compound sensor and a preparation method thereof. According to the preparation method, an oxidant film is formed on the surface of a gold interdigital electrode through a spin coating method; with a functionalized monomer adopted as a raw material, a functionalized conductive polymer film is deposited on the surface of the gold interdigital electrode through a chemical vapor deposition polymerization method, so that the organic phosphorus compound sensor can be obtained; the functionalized monomer is functionalized 3,4-ethylenedioxythiophene of which the molecular structure is described in the descriptions of the invention, functionalized aniline of which the molecular structure is described in the descriptions of the invention, or functionalized pyrrole of which the molecular structure is described in the descriptions of the invention; R in the molecular structures of the functionalized 3,4-ethylenedioxythiophene, functionalized aniline and functionalized pyrrole is-OH,-COOH; the prepared organophosphorus compound sensor may also be mainly composed of a gold interdigital electrode and a functionalized conductive polymer film depositedon the surface of the gold interdigital electrode. The preparation method of the organophosphorus compound sensor is simple and easy to implement. The organophosphorus compound sensor prepared by thepreparation method can be used for detecting 10 ppb-100 ppm of dimethyl methylphosphonate (DMMP), and has good sensitivity, selectivity and stability.

Description

technical field [0001] The invention belongs to the technical field of chemical sensors, and relates to an organophosphorus compound sensor and a preparation method thereof. Background technique [0002] Organophosphorus poisons usually refer to a chemical substance that is highly toxic and can poison or kill humans, animals and plants on a large scale. With the attention of people on the monitoring of organophosphorus poisons and the development of science and technology, ion mobility spectrometry, hydrogen flame ionization detector, surface acoustic wave technology, comprehensive integrated vehicle chemical detection system and gas chromatography-mass spectrometry have appeared successively. The analysis and detection device realizes the detection and analysis of suspicious substances. Although precise analytical instruments can be used to accurately analyze and identify unknown toxic agents, there are generally disadvantages such as cumbersome operations, long time consu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/12
CPCG01N27/126
Inventor 张晓兰何勇朱波张红兴裴熙林翁嘉楠袁宇鹏马晋毅王学利俞建勇
Owner DONGHUA UNIV
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