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A malic acid-modified biocompatible pedot:pss highly conductive film and its application

A technology of biocompatibility and malic acid, applied in the field of high conductivity PEDOT:PSS film and its preparation, can solve problems such as poor wettability of spin-coating liquid, stimulation of pressure sensor, poor elasticity and brittleness of film, etc. Inexpensive, good film-forming properties, and high sensitivity

Active Publication Date: 2019-02-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have problems such as poor wettability of spin-coating fluid after modification, poor elasticity and brittleness of the film after treatment, corrosion of conductive substrate materials, poor reproducibility, and unclear mechanism. Stimulate

Method used

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  • A malic acid-modified biocompatible pedot:pss highly conductive film and its application
  • A malic acid-modified biocompatible pedot:pss highly conductive film and its application
  • A malic acid-modified biocompatible pedot:pss highly conductive film and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Biocompatible PEDOT:PSS highly conductive film (i.e. intrinsic PEDOT:PSS film) when the concentration of DL-malic acid is 0wt%

[0024] Concrete preparation is carried out as follows:

[0025] 1. The substrate was pretreated in a UV-Ozone cleaning machine for 3 minutes, and then a monolayer of trichloro(1H, 1H, 2H, 2H perfluorooctyl) silane (SAM) was deposited in vacuum for surface evaporation. plating treatment.

[0026] 2. Stir the intrinsic PEDOT:PSS solution in a magnetic stirrer for 24 hours at room temperature.

[0027] 3. Drop the above solution onto the substrate treated in step a through a 0.45 μm polytetrafluoroethylene syringe filter, and spin-coat at a speed of 700 rpm for 30 seconds.

[0028] 4. At room temperature, place the spin-coated sample in a fume hood to dry for 24 hours, then solidify and release the mold.

[0029] 5. Connect the four probes to the digital source meter Keithly 2400, and use the four probe method to measure the resisti...

Embodiment 2

[0030] Example 2: Biocompatible PEDOT at the time of DL-malic acid concentration 1wt%:PSS high conductivity film

[0031] Concrete preparation is carried out as follows:

[0032] 1. The substrate was pretreated in a UV-Ozone cleaning machine for 3 minutes, and then a monolayer of trichloro(1H, 1H, 2H, 2H perfluorooctyl) silane (SAM) was deposited in vacuum for surface evaporation. plating treatment.

[0033] 2. Add DL-malic acid with a mass fraction of 1 wt% into the PEDOT:PSS solution, and add an appropriate amount of chemical cross-linking agent (3-Glycidyloxypropyl) trimethoxysilane.

[0034] 3. Stir the DL-malic acid-modified PEDOT:PSS mixed solution in a magnetic stirrer for 24 hours at room temperature to make it evenly mixed.

[0035] 4. Drop the above mixed solution onto the substrate treated in step a through a 0.45 μm polytetrafluoroethylene syringe filter, and spin-coat at a speed of 700 rpm for 30 s.

[0036] 5. At room temperature, place the spin-coated sample ...

Embodiment 3

[0038] Example 3: Biocompatible PEDOT at DL-malic acid concentration of 2wt%:PSS high conductivity film

[0039] Concrete preparation is carried out as follows:

[0040] 1. The substrate was pretreated in a UV-Ozone cleaning machine for 3 minutes, and then a monolayer of trichloro(1H, 1H, 2H, 2H perfluorooctyl) silane (SAM) was deposited in vacuum for surface evaporation. plating treatment.

[0041] 2. Add DL-malic acid with a mass fraction of 2wt% into the PEDOT:PSS solution, and add an appropriate amount of chemical cross-linking agent (3-Glycidyloxypropyl) trimethoxysilane.

[0042] 3. Stir the DL-malic acid-modified PEDOT:PSS mixed solution in a magnetic stirrer for 24 hours at room temperature to make it evenly mixed.

[0043] 4. Drop the above mixed solution onto the substrate treated in step a through a 0.45 μm polytetrafluoroethylene syringe filter, and spin-coat at a speed of 700 rpm for 30 s.

[0044]5. At room temperature, place the spin-coated sample in a fume h...

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Abstract

The invention discloses a highly-electroconductive biocompatible PEDOT:PSS film modified by malic acid. The highly-electroconductive biocompatible PEDOT:PSS film is prepared through spin coating of mixed liquor of the malic acid and a PEDOT:PSS solution, wherein the mixed liquor contains 1-10 wt% of malic acid. The highly-electroconductive biocompatible PEDOT:PSS film modified by the malic acid has the advantages that the malic acid is used for modifying a PEDOT:PSS film, so that electroconductivity of the PEDOT:PSS film is increased greatly and is 20,000 times more than that of an intrinsic PEDOT:PSS film; the highly-electroconductive biocompatible PEDOT:PSS film keeps biocompatibility and light transparency high, is prepared according to a low-cost, healthy and environment-friendly method, can contact with the human bodies for a long time without irritation and has huge potentials in the fields of medical monitoring and wearable devices; the highly-electroconductive biocompatible PEDOT:PSS film is applied to a piezoresistive transducer as an electroconductive layer and succeeds in enhancing sensitivity of the piezoresistive transducer and reducing detection limit thereof.

Description

technical field [0001] The invention belongs to the field of conductive polymer materials, and in particular relates to a malic acid-modified high-conductivity PEDOT:PSS film and a preparation method and application thereof. Background technique [0002] At present, my country's economy is developing rapidly, but it is accompanied by health problems such as the increase in the average life expectancy of the population, the expansion of the aging structure, and the frequent occurrence of cardiovascular diseases. Therefore, it is particularly important to realize early detection of diseases, real-time monitoring of health status, and early prevention of diseases. [0003] With the rapid development of the Internet of Things and flexible electronic devices, various wearable devices and mobile medical devices have emerged. As its core component, the flexible pressure sensor has risen rapidly and is widely used in electronic skin, intelligent prosthetics, health index monitoring...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L65/00C08L25/18C08K5/092
CPCC08J5/18C08J2325/18C08J2365/00C08J2425/18C08J2465/00C08L25/18C08L65/00C08L2203/16C08K5/092
Inventor 王宗荣王珊陈凯峰于星雨田薇王敏尹翀杜丕一
Owner ZHEJIANG UNIV
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