Water-soluble poly(3,4-ethylenedioxythiophene) and preparation method for conductive coating thereof

A technology of ethylenedioxythiophene and water-soluble polymer, which is applied in the direction of conductive coatings and coatings, and can solve the problems of device performance degradation and other issues

Inactive Publication Date: 2010-09-29
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Etching products will be released from the anode and penetrate into the devi

Method used

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  • Water-soluble poly(3,4-ethylenedioxythiophene) and preparation method for conductive coating thereof
  • Water-soluble poly(3,4-ethylenedioxythiophene) and preparation method for conductive coating thereof
  • Water-soluble poly(3,4-ethylenedioxythiophene) and preparation method for conductive coating thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1. Preparation of water-soluble poly(3,4-ethylenedioxythiophene) / poly(sodium styrene sulfonate-butyl acrylate) [PEDOT / P(SS-BA)] composite

[0026] Firstly, P(SS-BA) copolymer was prepared by traditional solution radical polymerization method. The specific steps are: first add 8g of sodium styrene sulfonate and 2g of butyl acrylate into a 250mL three-necked flask equipped with a condenser and a mechanical stirring paddle, and add 100mL of N,N-dimethylacetamide, and heat the solution to 70°C to completely dissolve sodium styrene sulfonate and butyl acrylate. Weigh 0.1 g of benzoyl peroxide (BPO) and dissolve it in 5 ml of N,N-dimethylacetamide. Use a dropping funnel to drop the initiator solution into the monomer solution and increase the temperature to 85°C. After reacting for 10 hours, the temperature was increased to 90° C. and reacted for 2 hours, and the product was poured out from the three-necked flask. First, the product is evaporated under reduced pressur...

Embodiment 2

[0032] Example 2. Preparation of water-soluble poly(3,4-ethylenedioxythiophene) / poly(sodium styrene sulfonate-methyl acrylate) [PEDOT / P(SS-MA)] composite

[0033] The water-soluble PEDOT / P (SS-MA) composite was prepared according to the steps of Example 1 (variation of the vinyl monomer). The copolymer P (SS-MA) used is 0.29g, the EDOT monomer used is 0.426ml (about 0.568g, the concentration of water is 0.2mol / L), and the oxidant is potassium persulfate 1.62g (0.006mol, The molar ratio to EDOT is 1.5), and react at room temperature for 16 hours.

[0034] The electrical conductivity of the obtained product was 13.7 S / cm.

Embodiment 3

[0035] Example 3. Preparation of water-soluble water-soluble poly(3,4-ethylenedioxythiophene) / poly(sodium styrene sulfonate-octadecyl acrylate) [PEDOT / P(SS-SA)] composite

[0036] The water-soluble PEDOT / P (SS-SA) complex was prepared according to the steps of Example 1 (variation of the vinyl monomer). The copolymer P (SS-SA) used is 0.48g, the EDOT monomer used is 0.043ml (about 0.057g, the concentration of water is 0.02mol / L), and the oxidizing agent is sodium persulfate 0.096g (with EDOT The molar ratio is 1.2), and the reaction is carried out at room temperature for 72 hours.

[0037] The conductivity of the resulting product was 24.2 S / cm.

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Abstract

The invention provides water-soluble poly(3,4-ethylenedioxythiophene) and a preparation method for a conductive coating thereof. The method comprises the following steps of: adding 3,4-ethylenedioxythiophene and an oxidant into the aqueous solution of the copolymer of sodium styrene sulfonate and an allyl monomer, regulating a pH value to be 1 to 5 by using a sulfuric acid, and polymerizing the mixture at the room temperature for 16 to 72h to obtain the water-soluble poly(3,4-ethylenedioxythiophene), wherein the oxidant may be ammonium persulfate, potassium persulfate or sodium persulfate; and the allyl monomer may be an acrylic monomer, a methacrylates monomer, hydroxyethyl acrylate , hydroxyethyl methacrylate, polyethylene glycol methacrylate or styrene. The electrical conductivity of the prepared water-soluble poly(3,4-ethylenedioxythiophene) is higher than that of the poly(3,4-ethylenedioxythiophene) generally using a polystyrene sulfonate acid as a dopant. The conductive coating is obtained by mixing the prepared water-soluble poly(3,4-ethylenedioxythiophene) and other water-based emulsion coatings or water-soluble polymers, and has the characteristics of high transparency and high electrical conductivity.

Description

Technical field [0001] The invention relates to a water-soluble poly(3,4-ethylenedioxythiophene) and a method for preparing conductive paint using the same. Background technique [0002] Since 1977, the American chemist MacDiarmid, the physicist Heeger and the Japanese chemist Shirakawa first discovered that iodine-doped polyacetylene has the characteristics of metal. Conductive polymers have been highly valued by scientists, industries and governments in various countries. The emergence of conductive polymers not only broke the traditional concept that polymers can only be used as insulators, but also made important contributions to the establishment and improvement of low-dimensional organic solid electronics. Due to its unique characteristics of light weight and high flexibility, electronic devices that use conductive polymers as active materials, such as polymer light-emitting diodes (PLEDs) and photovoltaic cells, show many excellent properties. [See: RHFriend, RWGymer, ABH...

Claims

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Application Information

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IPC IPC(8): C08G61/12C09D165/00C09D125/14C09D123/08C09D131/04C09D139/06C09D5/24
Inventor 杨万泰梁杰马育红
Owner BEIJING UNIV OF CHEM TECH
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