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A weavable fiber-based transistor glucose sensor and its preparation method

A glucose sensor and transistor technology, applied in the field of sensors, can solve the problems of inconvenient carrying of glucose sensors, inability to realize portability and real-time monitoring of human glucose, and achieve good linear response, high accuracy, and good flexibility

Active Publication Date: 2019-06-07
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the glucose sensor in this invention improves the accuracy of the glucose sensor in detecting glucose, the glucose sensor is inconvenient to carry and cannot realize portability and real-time monitoring of the concentration of glucose in the human body

Method used

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  • A weavable fiber-based transistor glucose sensor and its preparation method
  • A weavable fiber-based transistor glucose sensor and its preparation method
  • A weavable fiber-based transistor glucose sensor and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A method for preparing a weavable fiber-based transistor glucose sensor, comprising the following steps:

[0058] 1) Preparation of source-drain electrodes of organic electrochemical transistors:

[0059] Put 1.2g of pyrrole into 100ml, 0.39mM 5-sulfosalicylic acid dihydrate solution to obtain a mixed solution, soak the nylon filament in the mixed solution under the condition of ice bath at 0°C, and drop 100ml, 0.42 mM ferric nitrate nonahydrate solution, stirred at 300r / min, and took out the nylon filament after reacting for 1h to obtain the source-drain electrode of nylon / polypyrrole;

[0060] 2) Prepare the gate of the organic electrochemical transistor:

[0061] Soak the source-drain electrode obtained in step 1) in a 1 mg / mL glucose oxidase solution for 24 hours at 0°C, take it out, then soak it in a 5wt% perfluorosulfonic acid solution at 0°C, and take it out to obtain a gate;

[0062] 3) Transistor assembly:

[0063] The obtained source-drain electrodes and ga...

Embodiment 2

[0066] 1) Preparation of source-drain electrodes of organic electrochemical transistors:

[0067] Put 1g of aniline into 100ml, 10mM sulfuric acid solution to obtain a mixed solution, soak the cotton thread in the mixed solution under the condition of ice bath at 0°C, add dropwise 100ml, 1mM ferric chloride solution to the mixed solution, stir at 900r / min, and react After 2h, take out the cotton thread to obtain the source-drain electrode of cotton thread / polyaniline;

[0068] 2) Prepare the gate of the organic electrochemical transistor:

[0069] Soak the source-drain electrode obtained in step 1) in a 10 mg / mL glucose oxidase solution at 0°C for 20 hours, take it out, then soak it in a 2wt% perfluorosulfonic acid solution at 0°C for 20 hours, and take it out to obtain a gate;

[0070] 3) Transistor assembly:

[0071] The obtained source-drain electrodes and gates are combined in a plain weave structure, the source-drain electrodes intersect with the gate crosses, and a gel...

Embodiment 3

[0074] 1) Preparation of source-drain electrodes of organic electrochemical transistors:

[0075] Put 2g of pyrrole into 100ml, 3mM hydrochloric acid solution to obtain a mixed solution, soak the polyester yarn in the mixed solution under ice bath conditions at 0°C, and add 100ml, 0.74mM ammonium persulfate solution dropwise to the mixed solution, and stir at 500r / min, After reacting for 3h, take out the polyester filament to obtain the source-drain electrode of polyester filament / polypyrrole;

[0076] 2) Prepare the gate of the organic electrochemical transistor:

[0077] Soak the source-drain electrode obtained in step 1) in a 5 mg / mL glucose oxidase solution at 0°C for 28 hours, take it out, then soak it in a 3wt% perfluorosulfonic acid solution at 0°C for 20 hours, and take it out to obtain a gate;

[0078] 3) Transistor assembly:

[0079] The obtained source-drain electrodes and gates are combined in a plain weave structure, the source-drain electrodes intersect with th...

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Abstract

The invention relates to the field of sensors and in particular relates to a knittable fiber-based transistor glucose sensor and a preparation method of the knittable fiber-based transistor glucose sensor. The fiber-based transistor glucose sensor comprises an organic electrochemical transistor; the organic electrochemical transistor comprises a source-drain electrode and a grid electrode which is crossed with the source-drain electrode; gel electrolyte, which is used for stopping direct contact between the source-drain electrode and the grid electrode, is arranged at the crossed point of the source-drain electrode and the grid electrode; the source-drain electrode is a conductive high molecular composite material formed by polymerizing a flexible matrix material and a conductor monomer; the grid electrode is obtained by attaching glucose oxidase on the surface of the source-drain electrode through a fixing agent. The glucose sensor provided by the invention has relatively good flexibility, excellent sensing performance and relatively good anti-interference performance.

Description

technical field [0001] The invention relates to the field of sensors, in particular to a weavable fiber-based transistor glucose sensor and a preparation method thereof. Background technique [0002] As the most studied and commercialized biosensor in the field of biosensors, glucose sensors play an important role in the quantitative determination of human health, clinical testing, biochemistry, and food safety. Among them, the human serum glucose content is an important indicator in clinical biochemical tests, and the serum glucose content exceeds 1.3×10 -3 mg / L constitutes diabetes. However, as the pace of human life becomes faster and faster, excessive life pressure leads to the emergence of various chronic diseases. If these chronic diseases are not detected early, they will seriously affect human health. Therefore, how to quickly and accurately detect the concentration of glucose in blood, saliva, and sweat is of great significance for monitoring human health. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/414
CPCG01N27/4145
Inventor 王跃丹王栋卿星张杨周全刘琼珍鲁振坦王雯雯
Owner WUHAN TEXTILE UNIV
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