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Gold nanotube based flexible stretchable electrode and preparation method and application thereof

A gold nanotube and electrode technology, applied in the fields of electronics, material science, and electrochemistry, can solve the problems that the electrical conductivity and ductility of the stretchable electrochemical sensor cannot be satisfied at the same time, and achieve good cell compatibility. , excellent electrochemical performance, simple preparation method

Active Publication Date: 2016-07-13
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, flexible and stretchable electrochemical sensors for real-time monitoring of biosignal molecules and providing rich chemical information have not been reported. The main challenge is the nanomaterials currently used for stretchable electrodes, such as carbon nanotubes, graphene, silver Nanowires, none of which can simultaneously meet the needs of stretchable electrochemical sensors for conductivity, ductility, and electrochemical inertness
Therefore, it is a great challenge to construct flexible and stretchable electrochemical electrodes.

Method used

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  • Gold nanotube based flexible stretchable electrode and preparation method and application thereof
  • Gold nanotube based flexible stretchable electrode and preparation method and application thereof
  • Gold nanotube based flexible stretchable electrode and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0040] The preparation process of flexible and stretchable electrodes based on gold nanotubes is as follows: image 3 As shown, the specific steps are as follows:

[0041] (1) Pour 3g of liquid PDMS with a mass ratio of prepolymer and curing agent of 10:1 onto a clean silicon wafer with a diameter of 7.5cm, shake it on a plastic shaker at 600rmp for 9 seconds, and heat it at 75°C for 2 hours. The PDMS was cured and peeled off from the silicon wafer to obtain a PDMS film with a thickness of about 200 μm.

[0042] (2) Spread the PDMS membrane obtained in step (1) on a petri dish with a diameter of 9 cm, and pour 40 mL of a freshly prepared dopamine solution (Tris-HCl, 10 mmol / L, pH 8.5 ), to ensure that the solution is completely immersed in the PDMS membrane, under which the dopamine in the solution undergoes self-polymerization to form pDA, and then deposits on the surface of the PDMS membrane. After standing at room temperature for 24 hours, take out the PDMS membrane, wash...

Embodiment 2

[0049] (1) Pour 3g of liquid PDMS with a mass ratio of prepolymer and curing agent of 10:1 onto a clean silicon wafer with a diameter of 7.5cm, shake it on a plastic shaker at 1000rmp for 10 seconds, and heat it at 80°C for 1h to make PDMS After curing, a PDMS film with a thickness of about 70 μm was obtained and peeled off from the silicon wafer.

[0050] (2) Spread the PDMS membrane obtained in step (1) on a petri dish with a diameter of 9 cm, pour 40 mL of a newly prepared dopamine solution (Tris-HCl, 10 mmol / L, pH 8.5) with a concentration of 1.0 mg / mL , the solution was completely immersed in the PDMS membrane, and after standing at room temperature for 24 hours, the PDMS membrane was taken out, and after the PDMS membrane was washed 4 times with ultrapure water, N 2 Blow dry to obtain polydopamine functionalized PDMS membrane.

[0051] (3) 3 mL of silver nanowires with a concentration of 1 mg / mL (purchased from Zhejiang Kexin Material Technology Co., Ltd., diluted with ...

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Abstract

The invention discloses a gold nanotube based flexible stretchable electrode and a preparation method and application thereof. The preparation method comprises the following steps: performing hydrophilic treatment on a polydimethylsiloxane (PDMS) elastic film in advance and boosting uniform adhesion and fixing of a silver nanowire on the surface of an elastic base; with a disordered silver nanowire as a template, further preparing a gold nanotube with large length-diameter ratio through a replacement reaction of [Au(en)2]Cl3 and silver, thereby acquiring the gold nanotube based flexible stretchable electrode; connecting the electrode with an external electrode wire, thereby lastly acquiring an electrode used for testing. The gold nanotube based flexible stretchable electrode provided by the invention has the characteristics of high mechanical deformation resistance, excellent electrochemical property and excellent biocompatibility, can be used for monitoring mechanical sensitive cells in real time under true physiological conditions, and breaks through limitation to application of an existing nanometer material to a stretchable electrochemical transducer. The preparation method is simple and controllable and thus the electrode is easy to prepare.

Description

technical field [0001] The invention belongs to the fields of electrochemistry, electronics and material science, and specifically relates to a flexible and stretchable electrode based on gold nanotubes and a preparation method and application thereof. Background technique [0002] In recent years, flexible and stretchable devices based on various nanomaterials have developed rapidly and have shown great application prospects in the fields of sensing, photovoltaics, batteries, and wearable electronics. At present, flexible and stretchable sensors based on physical signal detection have made important progress in the monitoring of human health parameters such as pH, temperature, and brain waves. However, flexible and stretchable electrochemical sensors for real-time monitoring of biosignal molecules and providing rich chemical information have not been reported. The main challenge is the nanomaterials currently used for stretchable electrodes, such as carbon nanotubes, graphe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00G01N27/30
Inventor 黄卫华刘艳玲秦羽
Owner WUHAN UNIV
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