Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Water-soluble PEDOT-PSS dispersion and homogeneous polymerization preparation method thereof

A PEDOT-PSS, homogeneous polymerization technology, applied in the field of homogeneous polymerization preparation of water-soluble PEDOT-PSS dispersion, can solve problems such as difficulty in dispersing a large amount of EDOT, PEDOT-PSS film surface roughness, disadvantage, etc., to achieve excellent dispersion excellent film-forming properties, low haze effect

Active Publication Date: 2015-06-03
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
View PDF8 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Experiments have proved that it is difficult to disperse EDOT in a large amount only with water as the reaction solvent, and finally only a milky white dispersion can be formed for oxidative polymerization, resulting in the formation of a large number of insoluble particles, and the surface of the formed PEDOT-PSS film is rough, which is difficult for practical applications. bring many disadvantages

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Water-soluble PEDOT-PSS dispersion and homogeneous polymerization preparation method thereof
  • Water-soluble PEDOT-PSS dispersion and homogeneous polymerization preparation method thereof
  • Water-soluble PEDOT-PSS dispersion and homogeneous polymerization preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] a) Preparation of polystyrene sulfonic acid solution: Weigh 126g of a mixed solvent composed of dimethyl sulfoxide and deionized water, add 2.8g of sodium polystyrene sulfonate with a weight average molecular weight of 500,000, and stir to fully dissolve it , Form a transparent solution, add 1.2mL hydrochloric acid (mass fraction is 36%) again, make the pH value of reaction solution be 1.6, obtain the polystyrene sulfonic acid solution that mass concentration is 1.9%; Dimethyl sulfoxide and The molar ratio of deionized water is 1:11;

[0044] b) Add EDOT monomer: add 1g of EDOT monomer to the polystyrene sulfonic acid solution prepared in step a), and stir fully to obtain polystyrene sulfonic acid and EDOT transparent solution with a molar concentration of 0.06mol / L of EDOT monomer ;

[0045] c) Adding an oxidant: under constant stirring, add 2.01 g of sodium persulfate to the polystyrene sulfonic acid and EDOT transparent solution formed in step b), to obtain a transp...

Embodiment 2

[0049] a) Preparation of polystyrene sulfonic acid solution: Weigh 116 g of acetonitrile and deionized water mixed solvent, add 5.6 g of sodium polystyrene sulfonate with a weight average molecular weight of 350,000, stir to fully dissolve it, and form a transparent solution , add 1.8mL hydrochloric acid (mass fraction is 36%) again, make the pH value of reaction solution be 1.5, obtain mass concentration and be the polystyrene sulfonic acid solution of 4.1%; The mol ratio of acetonitrile and deionized water in the mixed solvent is 1 :8;

[0050] b) Add EDOT monomer: 1.8g EDOT monomer is added to the polystyrene sulfonic acid solution prepared in step a), and fully stirred to obtain polystyrene sulfonic acid with a molar concentration of EDOT monomer of 0.108mol / L, EDOT transparent solution;

[0051] c) Adding an oxidizing agent: under constant stirring, add 4.02 g of sodium persulfate to the polystyrenesulfonic acid / EDOT transparent solution formed in step b) to obtain a tra...

Embodiment 3

[0055] a) Preparation of polystyrene sulfonic acid solution: Weigh 120g of a mixed solvent composed of dimethyl sulfoxide, acetonitrile and deionized water, add 4.2g of sodium polystyrene sulfonate with a weight average molecular weight of 1,000,000, and stir to make it Dissolve fully, form transparent solution, then add 1.6mL hydrobromic acid (mass fraction is 39%), make the pH value of reaction solution be 1.6, obtain the polystyrene sulfonic acid solution that mass concentration is 3.0%; The molar ratio of sulfoxide, acetonitrile, and deionized water is 1:1.4:22;

[0056] b) Add EDOT monomer: Add 1.5g EDOT monomer to the polystyrene sulfonic acid solution prepared in step a), stir well to obtain polystyrene sulfonic acid / EDOT transparent polystyrene sulfonic acid / EDOT with EDOT monomer molar concentration of 0.09mol / L mixture;

[0057] c) Adding an oxidizing agent: under continuous stirring, add 3.02 g of sodium persulfate into the polystyrenesulfonic acid / EDOT transparent...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a water-soluble PEDOT-PSS dispersion and a homogeneous polymerization preparation method thereof. The preparation method has the advantages as follows: in the preparation method, a mixture of deionized water and a certain organic solvent is used as a solvent of a reaction system, so that an oil-soluble monomer EDOT and a water-soluble macromolecular sodium polystyrenesulfonate can be dissolved in the reaction system to form a transparent solution and generate a homogeneous polymerization reaction; after completion of the polymerization reaction, a mixed solution obtained in the reaction is dialyzed to obtain the water-soluble PEDOT-PSS dispersion. The water-soluble PEDOT-PSS dispersion prepared by the preparation method has good dispersibility, relatively good electrical performance and film-forming performance, and can be applied to the fields of flexible transparent electrode materials, antistatic materials and electrochromic materials; the preparation method is simple and feasible and is suitable for industrial production.

Description

technical field [0001] The invention relates to the field of conductive polymer functional materials. More specifically, it relates to a homogeneous polymerization preparation method of a water-soluble PEDOT-PSS dispersion. Background technique [0002] In recent years, conductive polymers have attracted great attention due to their excellent electrical and optical properties, among which the three most notable ones are polyaniline, polythiophene and polypyrrole. Among them, polythiophene derivative poly(3,4-dioxyethylthiophene) (PEDOT) is the most attractive for its high electrical conductivity, high light transmittance, excellent thermal stability and chemical stability, but PEDOT has The characteristics of insoluble and infusible directly limit its application. [0003] US 2009 / 02947735 discloses a conductive polymer solution in an organic solvent system, including conductive polymers containing π-conjugated structures such as polythiophene, water-soluble polymers conta...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L65/00C08L25/18C08G61/12
Inventor 周树云潘飞严峻孙兴明胡秀杰孙承华陈萍
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com