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Preparation method of electrode outer membrane material

A membrane material and electrode technology, which is applied in the field of electrode outer membrane material preparation, can solve problems affecting the detection structure judgment, unstable current signal, and affecting electrode current signal, so as to facilitate popularization and use, stable electrochemical signal, The effect of simple preparation process

Pending Publication Date: 2022-07-26
深圳可孚生物科技有限公司
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Problems solved by technology

[0003] The electrode outer membranes used in existing electrochemical biosensors are mainly chitosan, water-based PU, and nafion materials. These materials have poor response linearity as electrode outer membrane materials, resulting in insufficient electron acceptance and sensitivity of the electrodes. Affects the current signal generated by the electrode, and the current signal is unstable, resulting in errors in the detection results and affecting the judgment of the detection structure

Method used

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  • Preparation method of electrode outer membrane material
  • Preparation method of electrode outer membrane material

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preparation example Construction

[0041] A preparation method of electrode outer membrane material, the preparation process comprises:

[0042] Step S1. Add a reaction solvent into the reaction vessel.

[0043] Step S2. A certain proportion of sodium 4-vinylbenzenesulfonate, glycidyl methacrylate and butyl acrylate are added to the reaction vessel and all three are dissolved in the reaction solvent.

[0044] Step S3. Fill the reaction vessel with inert gas.

[0045] Step S4. Add azobisisobutyronitrile to the reaction solvent.

[0046] Step S5. Heating the solution in the reaction vessel.

[0047] like figure 1 , figure 2 As shown, the electrode outer film material prepared by the above method has epoxy groups. When the electrode outer film material is used on the surface of the electrode, the epoxy groups on the electrode outer film and the amino groups on the electron mediator are separated. The ring reaction makes the outer membrane of the electrode and the electron mediator cross-linked. When the biol...

Embodiment 1

[0075] Embodiment 1: In step S2, 1 mol of sodium 4-vinylbenzenesulfonate, 1 mol of glycidyl methacrylate, and 1 mol of butyl acrylate are added, and in step S4, 0.05 mol of azobisisobutyronitrile is added.

Embodiment 2

[0076] Embodiment 2: In step S2, 1 mol of sodium 4-vinylbenzenesulfonate, 1 mol of glycidyl methacrylate, and 1 mol of butyl acrylate are added, and in step S4, 0.2 mol of azobisisobutyronitrile is added.

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Abstract

The invention discloses a preparation method of an electrode outer membrane material, which comprises the following steps: adding sodium 4-vinyl benzenesulfonate, glycidyl methacrylate and butyl acrylate into a reaction solvent, adding azodiisobutyronitrile, and heating for reaction to form the electrode outer membrane material. The outer membrane material of the electrochemical biosensor electrode formed by the invention has an epoxy group, and the epoxy group and the amino group of the electron mediator can be subjected to ring-opening reaction, so that the outer membrane of the electrode is crosslinked with the electron mediator, the electron transfer is facilitated, and the electron receiving degree and the induction sensitivity of the electrode are improved, so that an electrochemical signal is more stable; the electrode has better response linearity, the problem that an existing electrode outer membrane material is poor in response linearity is solved, the correctness of a detection result is higher, and more accurate detection parameters are provided for health monitoring and treatment.

Description

technical field [0001] The invention relates to the technical field of electrochemical biosensors, and more particularly, to a preparation method of an electrode outer membrane material. Background technique [0002] With the popularization of medical awareness and the advancement of science and technology, medical health has gradually been paid more and more attention by people. Most modern diseases cause chronic damage and dysfunction to various tissues, especially the eyes, kidneys, heart, blood vessels, and nerves. During the treatment of these chronic diseases, monitoring the patient's blood sugar is very necessary. Among various sensors, electrochemical biosensors have the advantages of simplicity, convenience, low price, and high sensitivity, so they are widely used in medical and health treatments. The operating principle of the existing electrical biosensor is usually to use the electrochemical reaction of the electron mediator to cause a redox reaction in the liq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/327
CPCG01N27/3277
Inventor 不公告发明人
Owner 深圳可孚生物科技有限公司
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