Novel polythiophene disperse system as well as preparation method and application thereof

A dispersion system and polythiophene technology, applied in the field of chemical materials, can solve the problems of not being able to produce in a large area, service life and stability need to be improved, and achieve good photoelectric effect, good water solubility and film-forming performance, conductivity and stability sex-enhancing effect

Active Publication Date: 2013-09-18
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the practical application of PEDOT is only limited to antistatic coatings and electrode coatings, and cannot be produced on a large scale, and its service life and stability need to be improved.

Method used

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  • Novel polythiophene disperse system as well as preparation method and application thereof
  • Novel polythiophene disperse system as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Mix 0.04 parts by mass of a main chain conjugated polyelectrolyte solution with a weight fraction of 5 wt % and 0.03 parts by mass of an aqueous solution of ferric chloride in a three-necked flask, fill with nitrogen, and stir at room temperature for 20 minutes. Then, a saturated aqueous solution containing 0.01 parts by mass of 3,4-ethyldioxythiophene was slowly added dropwise and stirred rapidly at room temperature for 72 hours. Then, the mixed liquid is purified with carboxylic acid cation exchange resin to obtain a blue transparent ink-like dispersion liquid, that is, a novel polythiophene dispersion system is prepared. The microcrystalline structure of poly-3,4-ethyldioxythiophene was studied by small-angle X-ray scattering (SAXS) and wide-angle X-ray scattering (WAXS), detected by dynamic light scattering (DLS), particle size distribution was 10-80nm.

[0047] The results show that there are Bragg scattering absorption peaks at 2θ=2.38° (d=3.7nm) and 2θ=5.46° (d=1...

Embodiment 2

[0049] 0.04 parts by mass of a main chain conjugated polyelectrolyte solution with a weight fraction of 6 wt% and 0.04 parts by mass of an aqueous solution of ferric chloride were mixed uniformly in a three-necked flask, protected with nitrogen, and stirred at room temperature for 20 minutes. Then, a saturated aqueous solution containing 0.01 parts by mass of 3,4-ethyldioxythiophene was slowly added dropwise and stirred rapidly at room temperature for 72 hours. Then, the mixed liquid is purified with carboxylic acid cation exchange resin to obtain a blue transparent ink-like dispersion liquid, that is, a novel polythiophene dispersion system is prepared. By dynamic light scattering (DLS) detection, highly oriented particles of 15-100 nm were obtained.

[0050] The obtained new polythiophene dispersion system was drop-coated on a glass substrate, degassed in vacuum for 5 minutes, then dehydrated in air at 50°C for 12 hours, and finally dried in vacuum for 2 hours to obtain a hi...

Embodiment 3

[0052] Mix 14 parts by mass of main chain conjugated polyelectrolyte with a weight fraction of 5 wt% aqueous solution and 3.3 parts by mass of ferric chloride aqueous solution in a three-necked flask, fill with nitrogen protection, and stir at room temperature for 30 minutes. Then, a saturated aqueous solution containing 1.00 parts by mass of 3,4-ethyldioxythiophene was slowly added dropwise and stirred rapidly at room temperature for 72 hours. Then, the mixed liquid is purified with carboxylic acid cation exchange resin to obtain a blue transparent ink-like dispersion liquid, that is, a novel polythiophene dispersion system is prepared. By dynamic light scattering (DLS) detection, highly oriented particles of 12-80 nm were obtained.

[0053] The obtained new polythiophene dispersion system was drop-coated on a glass substrate, degassed in vacuum for 5 minutes, then dehydrated in air at 50°C for 12 hours, and finally dried in vacuum for 2 hours to obtain a highly oriented mole...

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Abstract

The invention discloses a novel polythiophene disperse system as well as a preparation method and application thereof, belonging to the field of chemical materials. The novel polythiophene disperse system consists of the following components in parts by mass: 0.01-1.00 part of 3,4-ethylene dioxythiophene, 0.04-14.00 parts of main chain conjugated polyelectrolyte, 0.03-3.30 parts of an oxidant and 40-400 parts of a solvent, wherein a 3,4-ethylene dioxythiophene monomer is subjected to in situ oxidation polymerization in an aqueous solution of the water-soluble main chain conjugated polyelectrolyte to form a blue-black ink-like disperse system. A compact film is formed through slow volatilization of the solvent, thiophene molecules of the film are arranged in parallel and piled along molecular chains of the polyelectrolyte to form a height-oriented crystalline structure, so that the conductivity and stability of the film are obviously improved. The film has an important application prospect in the field of organic electronic devices including polymer photovoltaic cells, organic light-emitting diodes and super-capacitors.

Description

technical field [0001] The invention belongs to the field of chemical materials, and in particular relates to a novel polythiophene dispersion system and its preparation method and application. Background technique [0002] In the last 20 years, conjugated conductive polymers have attracted the interest of many scientific researchers due to their unique electrical and optical properties. This kind of polymer material not only has the advantages of low density and easy processing of traditional polymers, but also has good optoelectronic properties of semiconductor or metal materials, so it becomes an ideal material for preparing optoelectronic devices. At present, such polymer materials are widely used and researched in the fields of photochromic display, supercapacitor, antistatic coating and organic photovoltaic cell. [0003] Conductive polymers developed rapidly in the 1970s. In 1974, the Japanese chemist Professor Hideki Shirakawa discovered that polyacetylene films no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12C08L65/00C08K3/16
Inventor 陈鸣才张友雄许凯于志伟彭军
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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