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Carbon nano tube/polypyrrole composite fiber as well as preparation method thereof and application thereof in transistor sensor

A technology of carbon nanotubes and composite fibers, which is applied in the field of biosensors, can solve the problems of high production costs and narrow detection range of flexible lactic acid sensors, and achieve low production costs, improved electrical performance and sensing performance, and strong anti-interference Effect

Active Publication Date: 2018-12-11
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the actual detection range of the flexible lactic acid sensor is relatively narrow, and the production cost is relatively high

Method used

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  • Carbon nano tube/polypyrrole composite fiber as well as preparation method thereof and application thereof in transistor sensor
  • Carbon nano tube/polypyrrole composite fiber as well as preparation method thereof and application thereof in transistor sensor
  • Carbon nano tube/polypyrrole composite fiber as well as preparation method thereof and application thereof in transistor sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] This embodiment provides a method for preparing a carbon nanotube / polypyrrole composite fiber-based transistor sensor, which includes the following steps:

[0079] 1) Configure the carbon nanotube dispersion: take the masses of 1g carbon nanotubes, 1g sodium dodecyl sulfate and 100g deionized water, mix and sonicate for 1 hour to obtain the carbon nanotube dispersion;

[0080] 2) Preparation of flexible fiber coated with carbon nanotube layer: take the PA6 nylon fiber whose surface has been ultrasonically cleaned with ethanol and soak it in the carbon nanotube dispersion of step 1) repeatedly for 4 hours, take it out, wash it with water, and dry it. Obtain a flexible fiber whose surface is covered with a carbon nanotube layer;

[0081] 3) Configure mixed solution A: take 0.15g of anthraquinone-2-sulfonic acid sodium salt and dissolve 1.8g of pyrrole monomer into deionized water to obtain 150mL of mixed solution A;

[0082] 4) Configure mixed solution B: take 30g of 9-hydrated f...

Embodiment 2

[0091] This embodiment provides a method for preparing a carbon nanotube / polypyrrole composite fiber-based transistor sensor, which includes the following steps:

[0092] 1) Configure the carbon nanotube dispersion: take the masses of 1g carbon nanotubes, 1g sodium dodecyl sulfate and 100g deionized water, mix and sonicate for 1 hour to obtain the carbon nanotube dispersion;

[0093] 2) Preparation of a flexible fiber coated with a carbon nanotube layer: take the silk fiber whose surface has been ultrasonically cleaned with ethanol and soak it in the carbon nanotube dispersion of step 1) repeatedly for 4 hours, take it out, wash it with water, and dry it. Flexible fiber coated with carbon nanotube layer on the surface;

[0094] 3) Configure mixed solution A: take 0.15g of anthraquinone-2-sulfonic acid sodium salt and 1.8g of pyrrole monomer in deionized water to obtain 150mL of mixed solution A;

[0095] 4) Configure mixed solution B: take 30g of 9-hydrated ferric nitrate and 22.5g of...

Embodiment 3

[0104] This embodiment provides a method for preparing a carbon nanotube / polypyrrole composite fiber-based transistor sensor, which includes the following steps:

[0105] 1) Configure the carbon nanotube dispersion: take the masses of 1g carbon nanotubes, 1g sodium dodecyl sulfate and 100g deionized water, mix and sonicate for 1 hour to obtain the carbon nanotube dispersion;

[0106] 2) Preparation of a flexible fiber coated with a carbon nanotube layer: take the polyester fiber whose surface has been ultrasonically cleaned with ethanol and soak it in the carbon nanotube dispersion of step 1) repeatedly for 4 hours, take it out, wash it with water, and dry it. Flexible fiber coated with carbon nanotube layer on the surface;

[0107] 3) Configure mixed solution A: take 0.15g of anthraquinone-2-sulfonic acid sodium salt and 1.8g of pyrrole monomer in deionized water to obtain 150mL of mixed solution A;

[0108] 4) Configure mixed solution B: take 30g of 9-hydrated ferric nitrate and 22....

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Abstract

The invention discloses a carbon nano tube / polypyrrole composite fiber as well as a preparation method thereof and application thereof in a transistor sensor, and belongs to the technical field of bio-sensors. The carbon nano tube with good dispersion is coated on a flexible fiber, then, pyrrole monomer is chemically polymerized onto the flexible fiber coated with the carbon nano tube in situ, sothat the carbon nano tube has good thermodynamic properties and conductive performance; a similar bridge effect is formed between the surface of the flexible fiber and the polypyrrole, so that growthof linear polypyrrole is facilitated better; the linear polypyrrole is more beneficial for improving the performances of the transistor sensor. The preparation method is simple in process, is relatively gentle in reaction condition, is relatively low in production cost, is free of pollution, and is suitable for preparing the nano fiber transistor on a large scale; and the prepared transistor sensor only has detecting ability on lactic acid, is relatively strong in interference resistance, is high in accuracy, is good in sensitivity, is low in detecting limit being 1 nM / L, is relatively high indetecting range, and can detect lactic acid with concentration about 1 nM / L-1mM / L.

Description

Technical field [0001] The invention relates to an organic electrochemical transistor, which belongs to the technical field of biosensors, and specifically relates to a carbon nanotube / polypyrrole composite fiber, a preparation method and its application in a transistor sensor. Background technique [0002] As a one-dimensional nanomaterial, carbon nanotubes are light in weight, perfectly connected in hexagonal structure, and have many unusual mechanical, electrical and chemical properties. In recent years, with the deepening of research on carbon nanotubes and nanomaterials, their broad application prospects have also been continuously revealed. The carbon atoms in carbon nanotubes are sp 2 Hybridization is dominant, and the hexagonal grid structure has a certain degree of bending, forming a spatial topological structure, in which a certain sp 3 Hybrid bond, that is, the chemical bond formed has sp 2 And sp 3 Mixed hybrid state, and these p orbitals overlap each other to form hi...

Claims

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Application Information

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IPC IPC(8): D06M11/74D06M15/37C08G73/06G01N27/414D06M101/06D06M101/12D06M101/28D06M101/32D06M101/34
CPCC08G73/0611D06M11/74D06M15/37D06M2101/06D06M2101/12D06M2101/28D06M2101/32D06M2101/34G01N27/4146
Inventor 王跃丹王栋张杨卿星丁新城陈媛丽王雯雯
Owner WUHAN TEXTILE UNIV
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