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PEDOT: PSS polymer, preparation method and application thereof

A technology of polymer and reaction solution, which is applied in semiconductor/solid-state device manufacturing, electrical components, circuits, etc., can solve problems affecting applications and low film conductivity, and achieve easy operation, good dispersion, and good source-leakage current control performance effect

Active Publication Date: 2018-10-02
HUNAN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the electrical conductivity of the PEDOT:PSS film prepared by the current PEDOT:PSS is low, which affects its application in the fields of sensors, displays, and organic electronic devices.

Method used

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  • PEDOT: PSS polymer, preparation method and application thereof
  • PEDOT: PSS polymer, preparation method and application thereof
  • PEDOT: PSS polymer, preparation method and application thereof

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preparation example Construction

[0029] The present invention provides a PEDOT:PSS polymer of an embodiment, which is prepared by the following preparation method. The preparation method of the PEDOT:PSS polymer of an embodiment of the present invention comprises the following steps.

[0030] Step S100: Mixing the aqueous solution of polystyrene sulfonate and EDOT and adjusting the solution to acidity to obtain a mixed solution. Among them, the Chinese name of EDOT is 3,4-ethylenedioxythiophene.

[0031] The mass volume ratio of polystyrene sulfonate and EDOT will affect the degree of polymerization of EDOT polymerization and the ratio of PEDOT (poly 3,4-ethylenedioxythiophene) and polystyrene sulfonate in PEDOT:PSS polymer, and then It affects the conductivity and dispersion properties of PEDOT:PSS polymers in water.

[0032] Preferably, the mass percentage of the polystyrene sulfonate in the polystyrene sulfonate aqueous solution is 1%-5%. Preferably, the mass volume ratio of polystyrene sulfonate to EDO...

Embodiment 1

[0054] 25 μL of light yellow oily EDOT was added to 3.1 mL of 2 wt.% NaPSS solution (the mass of NaPSS was 62.5 mg), followed by dropwise addition of concentrated hydrochloric acid to adjust the pH of the solution to 1 to obtain a mixed solution. The reaction vessel was sealed and evacuated and protected by argon, and 4 mL of FeCl was added with a syringe at an even speed under the condition of ultrasonic treatment at a frequency of 40KHz. 3 and an aqueous solution of potassium persulfate, in which FeCl 3 and K 2 S 2 o 8 The concentrations were 12.9mmoL / L and 52.5mmoL / L respectively, and continued to sonicate for 5min. Then transfer the reaction vessel to a water bath with a water bath temperature of 10°C, stir and react at a speed of 800 rpm for 24 hours, filter the reacted reaction liquid with suction to obtain a solid, wash with hexane to remove unreacted EDOT, and then use a large amount of Wash with ethanol, and then dry in a constant temperature drying oven at 50°C t...

Embodiment 2

[0056] 62.5 μL of light yellow oily EDOT was added to 3.1 mL of 2 wt.% NaPSS solution, and then concentrated hydrochloric acid was added dropwise to adjust the pH of the solution to 2 to obtain a mixed solution. The reaction vessel was sealed and evacuated and protected by argon, and 3.1mL FeCl was added with a syringe at an even speed under the condition of ultrasonic treatment at a frequency of 30KHz. 3 and an aqueous solution of potassium persulfate, in which FeCl 3 and K 2 S 2 o 8 The concentrations were 12.9mmoL / L and 25.8mmoL / L respectively, and continued to sonicate for 8min. Then the reaction vessel was transferred to a water bath with a water bath temperature of 30°C, stirred and reacted at a speed of 800 rpm for 15 h, and the solid was obtained by suction filtration, washed with hexane to remove unreacted EDOT, then washed with a large amount of ethanol, and then heated at 60 °C in a constant temperature drying oven to obtain a dark blue solid PEDOT:PSS polymer. ...

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Abstract

The invention discloses a PEDOT: PSS polymer, a preparation method and application thereof. The method comprises the following steps: the aqueous solution of polystyrene sulfonate and EDOT are mixed together and the solution is regulated to acidity, and the mixed solution is obtained; the mixed solution and the catalyst are mixed under the ultrasonic of a protective atmosphere with a frequency of20KHz-40KHz, and continues to be subjected to the ultrasonic treatment for 3-10min to obtain a reaction solution; the reaction solution is reacted at 5-30 DEG C for 5-24h, thereby the EDOT in the reaction solution is subjected to polymerization reaction to form PEDOT, the PEDOT and the polystyrene sulfonate are combined under the electrostatic action to obtain the PEDOT: PSS polymer. The method issimple, easy to operate, green and pollution-free. The prepared polymer has good dispersibility in water, and the particle diameter of the particles is moderate and the particle size is even. The prepared thin film has the advantages of high conductivity, strong bonding force and high stability of recycling, which can be used for organic electrochemical transistors, and has large initial source leakage current and good source leakage current regulation performance.

Description

technical field [0001] The invention relates to the technical field of conductive polymers, in particular to a PEDOT:PSS polymer and its preparation method and application. Background technique [0002] Since Shirakaw discovered polyacetylene with high conductivity and created a new research field of organic conductive polymers, various organic conductive polymers such as polyaniline, polypyrrole, polythiophene and their derivatives have been used in antistatic coatings. , Supercapacitors, sensors, displays, organic electronic devices and functional electrodes have been widely used. Among them, poly(3,4-ethylenedioxythiophene) (PEDOT) is a polythiophene organic conductive polymer, which has the advantages of high conductivity and good biocompatibility, but has the disadvantage of poor dispersion in water. The inability to prepare thin films by aqueous solution spin coating greatly limits its application. [0003] In recent years, it has been found that poly(3,4-ethylenedio...

Claims

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Application Information

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IPC IPC(8): C08G61/12C08L25/18C08L65/00H01L51/30
CPCC08G61/126C08J5/18C08L25/18C08L65/00C08G2261/3243C08G2261/11C08G2261/92C08J2365/00C08J2325/18C08J2425/18C08J2465/00C08L2203/20C08L2203/16H10K85/113
Inventor 唐浩佘芳刘雅文刘闪闪曹倩倩
Owner HUNAN NORMAL UNIVERSITY
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