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High dispersibility nano-scale poly (3,4-ehtylene dioxythiophene), preparation and use thereof

An ethylenedioxythiophene, nano-scale technology, applied in the direction of single-component synthetic polymer rayon, organic material conductor, fiber chemical characteristics, etc., can solve the problems of inhibiting the application and development of PEDOT, agglomeration, etc.

Inactive Publication Date: 2009-04-15
BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the preparation of nanoscale PEDOT by self-assembly chemical oxidative polymerization, very serious agglomeration usually occurs, which greatly inhibits the further application and development of PEDOT in related fields.

Method used

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  • High dispersibility nano-scale poly (3,4-ehtylene dioxythiophene), preparation and use thereof
  • High dispersibility nano-scale poly (3,4-ehtylene dioxythiophene), preparation and use thereof
  • High dispersibility nano-scale poly (3,4-ehtylene dioxythiophene), preparation and use thereof

Examples

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preparation example Construction

[0031] 3. The preparation method of the present invention is a self-assembly chemical oxidation polymerization method, which is simple and easy to implement, with simple equipment and is suitable for large-scale implementation.

[0032] 4. The nano-scale PEDOT provided by the present invention can be dissolved in an organic solvent to prepare a conductive film, and can also be blended with a variety of general-purpose polymer materials, and can also be used as a filler, and can be used in electronic devices, electroluminescence or electrochromism. Materials, anti-static materials, electromagnetic shielding materials, wave-absorbing materials, anti-corrosion materials, conductive fibers, etc. have been widely used.

Embodiment 1

[0035] Example 1 : Preparation of highly dispersed nano-scale PEDOT of the present invention

[0036] 0.5mL (0.0047mol) of EDOT monomer and 5.2g (0.023mol) of ammonium persulfate (oxidant) were sequentially added to an aqueous solution of trifluoroacetic acid (0.1mol) (dopant) at 0°C, so that doping The concentration of the oxidizing agent in the resulting reaction mixture solution was 5M, and the molar ratio of the EDOT monomer, oxidizing agent and dopant was 1:5:21. After stirring for 15 hours, the reaction was stopped, filtered under reduced pressure, and then washed three times with 10 mL of distilled water, ethanol and diethyl ether (i.e. three times with water, three times with ethanol and three times with diethyl ether), and vacuum dried at 60°C for 8 hours to obtain Blue black powder solid.

[0037] The results of infrared and ultraviolet spectra prove that it has the typical structure of PEDOT. The scanning electron micrograph of the newly prepared product is as f...

Embodiment 2

[0038] Example 2 : Preparation of highly dispersed nano-scale PEDOT of the present invention

[0039] 0.5mL (0.0047mol) of EDOT monomer and 2.6g (0.011mol) of ammonium persulfate (oxidant) were sequentially added to an aqueous solution of trifluoroacetic acid (0.1mol) (dopant) at 0°C, so that doping The concentration of the oxidizing agent in the resulting reaction mixture solution was 5M, and the molar ratio of the EDOT monomer, oxidizing agent and dopant was 1:2.5:21. After stirring for 15 hours, the reaction was stopped, filtered under reduced pressure, and then washed three times with 10 mL of distilled water, ethanol, and diethyl ether, and vacuum-dried at 60°C for 8 hours to obtain a blue-black powder solid.

[0040] The results of infrared and ultraviolet spectra prove that it has the typical structure of PEDOT. The diameter of the obtained particles is in the range of 50-150nm, the room temperature conductivity measured by the four-probe electrode method is 100S / cm,...

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Abstract

The invention relates to a high-dispersivity nanometer PEDOT (poly (3,4-ethylenedioxythiophene)). The average diameters of granules contained in the polymer are 50 to 500nm, and dispersion parameters Di of the granules are 0.1 to 10nm / d. Furthermore, the invention also relates to a method for preparing the nanometer polymer, which uses organic acid containing fluorine and / or surface active agents of salts thereof as doping agents, and nanometer PEDOT is obtained through a self-assembly chemical oxidation polymerization method. The method successfully solves the agglomeration problem of PEDOT nanometer materials, which is characterized by simple operating process, low cost and being prone to industrialized implementation. Finally, the invention also relates to the application of the nanometer PEDOT in the aspects of electrode materials for producing electronic device, electroluminescence or electrochromism materials, static-free materials, electromagnetic shielding materials, wave-absorbing materials, corrosion protection materials and conductive fiber.

Description

technical field [0001] The invention belongs to the field of functional materials, and in particular relates to a nanoscale poly(3,4-ethylenedioxythiophene) with high dispersibility, a method for preparing the nanoscale polymer, and a method for preparing the nanoscale polymer. application. Background technique [0002] Poly(3,4-ethylenedioxythiophene) (Poly(3,4-ethylenedioxythiophene), PEDOT) is known for its high electrical conductivity (100-1000S / cm), excellent environmental stability, easy film formation and transparency It has become a research hotspot in the field of conductive polymers because of its good properties. As an irreplaceable new optical and electrical material, PEDOT is an ideal material for preparing organic electroluminescent devices, electrochromic devices, electronic paper, plastic memory, solar cells, electrolytic capacitors, sensors and other electronic devices. In addition, it also has extensive and attractive application prospects in the fields o...

Claims

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Application Information

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IPC IPC(8): C08G61/12C09K11/06C09K9/02H01B1/12H05K9/00D01F6/76
Inventor 李昕李小宁赵国樑孙强金俊平
Owner BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
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