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Flexible sensor electrode preparation method, flexible sensor electrode and flexible sensor

A flexible sensor and electrode technology, used in biochemical equipment and methods, instruments, scientific instruments, etc., can solve the problems of weak electrode binding force, difficult flexibility, and cumbersome electrochemical polymerization process, so as to achieve flexibility and process. simple effect

Pending Publication Date: 2020-04-14
INST OF FLEXIBLE ELECTRONICS TECH OF THU ZHEJIANG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electrochemical polymerization process is cumbersome and the binding force with the electrode is weak
In addition, most of the sensor electrodes currently used are made of hard materials, which are difficult to achieve flexibility and are not suitable for the development of flexible wearable devices.

Method used

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  • Flexible sensor electrode preparation method, flexible sensor electrode and flexible sensor

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preparation example Construction

[0033] figure 1 Shown is a schematic flow chart of the flexible sensor electrode preparation method provided by the embodiment of the present invention. Such as figure 1 As shown, the flexible sensor electrode preparation method provided by the embodiment of the present invention includes the following steps:

[0034] S1: Provide graphene oxide film;

[0035] S2: performing silane modification on the graphene oxide film to obtain a modified reduced graphene oxide film;

[0036] S3: Coating a medium material on one side of the modified reduced graphene oxide film, so that the medium material is adsorbed on the modified reduced graphene oxide film;

[0037] S4: modifying biological enzymes on the surface of the modified reduced graphene oxide film on which the mediator material is adsorbed to obtain flexible sensor electrodes.

[0038] In this embodiment, the graphene oxide film itself has good flexibility. By modifying the graphene oxide film with silane, on the one hand, ...

Embodiment 1

[0055] Embodiment 1: 100 mg of graphene oxide film with a thickness of 100 μm obtained by suction filtration is placed in a desiccator, and a petri dish filled with 200 μL of 3-aminopropyltriethoxysilane is placed in the desiccator, and after sealing, it is heated at 180 Reaction at ℃ for 3h. After the reaction, the obtained modified reduced graphene oxide film was taken out and vacuumized three times. Prepare 500mg / L methylene blue aqueous solution, and drop-coat it on the surface of one side of the silane-modified reduced graphene oxide film, the dosage is 100μL / cm 2 . After natural drying, it was dipped and washed in deionized water for 3 times, and after drying, the modified reduced graphene oxide film with the media material adsorbed was obtained. Glucose oxidase is dissolved in phosphate buffer (pH=7.2) at a concentration of 10-50 mg / ml, and then mixed with 1% chitosan solution (solvent is 2% acetic acid aqueous solution) according to the volume ratio of 1:2 to obtain ...

Embodiment 2

[0056] Embodiment 2: Embodiment 2 is basically the same as the above embodiment, except that methyltriethoxysilane is used as the reactant for silane modification. Since the modified reduced graphene oxide film after the silane modification is hydrophobic, when the organic dye is adsorbed, the organic dye needs to be dissolved in an organic solvent (such as ethanol) and then drip-coated.

[0057] In summary, the present invention first utilizes silane vapor to carry out synchronous reduction and crosslinking of graphene oxide film to prepare a modified reduced graphene oxide film with electrical conductivity and mechanical strength; Adsorb the media material on the surface of the modified graphene oxide film to form a media layer on the modified reduced graphene oxide film. This method avoids the cumbersome electropolymerization process during the formation of the traditional medium layer, the preparation method is simple, the medium layer and the electrode body can be closely...

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Abstract

The invention discloses a flexible sensor electrode preparation method, a flexible sensor electrode and a flexible sensor, and the method comprises the steps: carrying out the silane modification of agraphene oxide film, and obtaining a modified reduced graphene oxide film; and adsorbing a medium material on the modified reduced graphene oxide film, and modifying biological enzyme on the modifiedreduced graphene oxide film adsorbed with the medium material. The preparation method is simple in process, a medium layer and the electrode body can be tightly combined, and the flexibility of the sensor electrode can be realized.

Description

technical field [0001] The invention relates to the technical field of flexible devices, in particular to a method for preparing a flexible sensor electrode, a flexible sensor electrode and a flexible sensor. Background technique [0002] Wearable sensors can realize continuous and non-invasive detection of various indicators of the human body, and are playing an increasingly important role in modern medical detection. The development of sensor electrodes with excellent performance and simple preparation methods is of great significance to the development of wearable devices. Among them, the bio-enzyme sensor has the advantages of good selectivity and high sensitivity, and is very suitable for detecting systems with complex components and low content such as human body fluids. [0003] Taking the glucose enzyme sensor as an example, the main component of the glucose enzyme sensor is the detection electrode, which includes the electrode body, a medium layer and a reaction en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/327C12Q1/00
CPCG01N27/3272C12Q1/001G01N2333/904
Inventor 冯雪肖建亮陈颖
Owner INST OF FLEXIBLE ELECTRONICS TECH OF THU ZHEJIANG
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