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Method for preparing high-conductivity PEDOT-PSS (poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)) solution

A PEDOT-PSS, high conductivity technology, applied in the field of preparation of high conductivity PEDOT-PSS solution, can solve the problems of large particle diameter, poor uniformity, poor performance stability, etc., to improve particle size uniformity , Improve performance stability, improve conductivity

Inactive Publication Date: 2015-05-27
ZHEJIANG CASNOVO MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Yet, because the preparation method of existing PEDOT-PSS solution is relatively immature, the particle size diameter of the prepared PEDOT-PSS solution is larger, and the uniformity is not very good, on the one hand the particle size uniformity is not good to cause by this PEDOT - The performance stability of the membrane prepared by the PSS solution is poor. On the other hand, due to the large particle diameter of the PEDOT-PSS solution, the conductivity of the prepared membrane cannot be greatly improved, and it cannot be applied in the field of high-tech materials.

Method used

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  • Method for preparing high-conductivity PEDOT-PSS (poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)) solution

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Experimental program
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Embodiment 1

[0020] Embodiment 1: the method for preparing PEDOT-PSS solution, this method specifically comprises the following steps:

[0021] a. Add 35g of sodium polystyrene sulfonate to 3500ml of deionized aqueous solution to dissolve, and keep the temperature of the solution at 7°C to obtain product A;

[0022] b. Add 20 ml of a solution containing 2.5 grams of sulfuric acid to product A, then add 10.5 g of 3,4-ethylenedioxythiophene to react, and use high-purity nitrogen to deoxygenate during the reaction to obtain product B;

[0023] c. Add 0.002g of Fe 2 (SO 4 ) 3 solution and 25.5g(Na) 2 S 2 o 8 The solutions are mixed, the mixed solution is placed in a constant pressure separatory funnel, and is added dropwise to product B at a rate of one drop per 1 second (the capacity of the droplet of a conventional constant pressure separatory funnel is common knowledge in the art), Stir simultaneously with the rotating speed of 350r / min, the stirring time is 40 hours, obtains C produc...

Embodiment 2

[0025] Embodiment 2: the method for preparing PEDOT-PSS solution, this method specifically comprises the following steps:

[0026] a. Add 45.5 g of sodium polystyrene sulfonate to 3800 ml of deionized aqueous solution to dissolve, and keep the temperature of the solution at 15°C to obtain product A;

[0027] b. Add 35ml of a solution containing 4 grams of sulfuric acid to product A, then add 16g of 3,4-ethylenedioxythiophene to react, and use high-purity nitrogen to deoxygenate during the reaction to obtain product B;

[0028] c. Add 0.005g of Fe 2 (SO 4 ) 3 solution and 35g(Na) 2 S 2 o 8 Mix the solutions, place the mixed solution in a constant pressure separatory funnel, add dropwise to product B at a rate of one drop every 4 seconds, and stir at a speed of 650 r / min at the same time, and the stirring time is 55 hours to obtain product C;

[0029] d. Put 50g of dimethyl sulfoxide, 18g of ethylene glycol and 24g of ethanol into product C for reaction, and stir at a spee...

Embodiment 3

[0030] Embodiment 3: the method for preparing PEDOT-PSS solution, this method specifically comprises the following steps:

[0031] a. Add 41.48g of sodium polystyrene sulfonate to 3200ml of deionized aqueous solution to dissolve, and keep the solution temperature at 10°C to obtain product A;

[0032] b. Add 30 ml of a solution containing 3.72 grams of sulfuric acid to product A, then add 10.15 g of 3,4-ethylenedioxythiophene to react, and use high-purity nitrogen to remove oxygen during the reaction to obtain product B;

[0033] c. Add 0.0013g of Fe 2 (SO 4 ) 3 solution and 27.45g(Na) 2 S 2 o 8 Mix the solutions, place the mixed solution in a constant pressure separatory funnel, add dropwise to product B at a rate of one drop every 2 seconds, and stir at a speed of 400 r / min at the same time, and the stirring time is 24 hours to obtain product C;

[0034] d. Put 50g of dimethyl sulfoxide, 18g of ethylene glycol and 24g of ethanol into product C for reaction, and stir at ...

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Abstract

The invention discloses a method for preparing a high-conductivity PEDOT-PSS (poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)) solution. The preparation method comprises the following steps: a. adding 35-48g of sodium polystyrene sulfonate into 3000-4000ml of deionized water solution, and dissolving while keeping the solution temperature at 5-20 DEG C, thereby obtaining a product A; b. adding 20-40ml of solution containing 2-5g of sulfuric acid into the product A, and adding 8-18g of 3,4-ethylenedioxythiophene to react, thereby obtaining a product B; c. mixing 0.001-0.005g of Fe2(SO4)3 solution and 20-40g of (NH4)2S2O8 solution, putting the mixed solution in a constant-pressure separating funnel, and dropwisely adding the mixed solution into the product B at the rate of 1 drop per 1-5 seconds while stirring at the rate of 300-700 r / min for 30-60 hours, thereby obtaining a product C; and d. adding 30-60g of dimethylsulfoxide, 10-20g of ethylene glycol and 10-30g of ethanol into the product C to react while stirring at the rate of 300-700 r / min for 10-30 hours, thereby obtaining the finished product.

Description

technical field [0001] The invention relates to a method for preparing a high-conductivity PEDOT-PSS solution, and belongs to the field of conductive polymer functional materials. Background technique [0002] Poly(3,4-ethylenedioxythiophene) (PEDOT) was synthesized for the first time in the Bayer A G laboratory in Germany. It is a typical representative of thiophene conductive polymers. By introducing ethylene at the 3 and 4 positions of the thiophene ring Dioxyl is obtained, and its conductive doping state is very stable. Moreover, the absorption peak of the conjugated π bond of PEDOT does not appear in the visible light absorption range, and its absorption wavelength is about 300nm, which has the property of light transmission. Therefore, PEDOT, like most conductive polymer materials, has excellent electromagnetic properties, mechanical processing properties, stable electrochemical properties, good transparency, high photoelectric efficiency and biocompatibility. This m...

Claims

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Application Information

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IPC IPC(8): C08L65/00C08L25/18C08G61/12
Inventor 徐军沈俊杰邵汉琦李娟
Owner ZHEJIANG CASNOVO MATERIALS
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