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Electrochromic conducting polymer and preparation method as well as application thereof

A conductive polymer and color-induced technology, which is applied in the direction of color-changing fluorescent materials, chemical instruments and methods, electrical components, etc., to achieve the effect of good solubility

Inactive Publication Date: 2010-09-08
BEIJING INST OF CLOTHING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the application process of conductive polymer electrochromic devices, since it is difficult to realize the three primary colors of red, green and blue (RGB) display with a single conductive polymer, how to prepare electrochromic materials and devices with full-color display has always been the hard work of scientific researchers. The hot issues to be solved are also the difficult problems that need to be solved urgently
The methods for preparing multi-color or even full-color electrochromic composite materials reported in the literature mainly include: introducing different chromogenic systems into the polymer molecular structure or physically compounding different chromogenic systems, but using acid dyes as dopants to adjust the conductivity The method of polymer color has not yet been reported in the literature

Method used

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  • Electrochromic conducting polymer and preparation method as well as application thereof
  • Electrochromic conducting polymer and preparation method as well as application thereof
  • Electrochromic conducting polymer and preparation method as well as application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1, preparation multi-color electrochromic conducting polymer (polyaniline doped with acid red G) of the present invention

[0036] Add 0.25g of acid red G (0.5mmol) into 25mL of hydrochloric acid solution (0.04mol / L), stir magnetically until a uniform solution is formed, then add 0.68g of ammonium persulfate (3mmol) and 0.23mL of aniline (2.5mmol) Add it into the above-mentioned hydrochloric acid solution containing acid red G, stir magnetically at 0-10°C for 24 hours, stop the reaction, filter with suction, wash the filter cake with water, ethanol and ether for several times until the washing liquid is almost colorless, and finally The product was vacuum-dried at 60°C for 24 hours to obtain a purple-black solid powder. In this embodiment, the molar ratio of aniline: ammonium persulfate: acid red G: is 1:1.2:0.2.

[0037] This solid powder product proves that it has the typical structure of PANI through infrared spectrum, and its infrared spectrum is as follow...

Embodiment 2

[0038] Embodiment 2, prepare the polyaniline doped with acid red G of the present invention

[0039] Add 0.51g of acid red G (1mmol) to 25mL of hydrochloric acid solution (0.08mol / L), stir magnetically until a uniform solution is formed, then add 0.68g of ammonium persulfate (3mmol) and 0.23mL of aniline (2.5mmol) into the above-mentioned hydrochloric acid solution containing acid red G, stirred magnetically at 0-10°C for 24 hours, stopped the reaction, filtered with suction, and washed the filter cake with water, ethanol and ether for several times until the washing liquid was almost colorless, and finally the product Vacuum-dried at 60°C for 24 hours to obtain a purple-black solid powder. In this example, the molar ratio of aniline:ammonium persulfate:acid red G:1:1.2:0.4.

[0040] This solid powder product proves that it has the typical structure of PANI through infrared spectrum, and its infrared spectrum is as follows: figure 1 As shown in c, the ultraviolet spectrum is...

Embodiment 3

[0041] Embodiment 3, prepare the polyaniline doped with acid red G of the present invention

[0042] Add 0.76g of Acid Red G (1.5mmol) into 25mL of hydrochloric acid solution (0.12mol / L), stir magnetically until a uniform solution is formed, then add 0.68g of ammonium persulfate (3mmol) and 0.23mL of aniline (2.5mmol) Add it into the above-mentioned hydrochloric acid solution containing acid red G, stir magnetically at 0-10°C for 24 hours, stop the reaction, filter with suction, wash the filter cake with water, ethanol and ether for several times until the washing liquid is almost colorless, and finally The product was vacuum-dried at 60°C for 24 hours to obtain a purple-black solid powder. In this example, the molar ratio of aniline:ammonium persulfate:acid red G:1:1.2:0.6.

[0043] This solid powder product proves that it has the typical structure of PANI through infrared spectrum, and its infrared spectrum is as follows: figure 1 As shown in d, the UV spectrum is shown as...

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Abstract

The invention relates to a multi-color conducting polymer and a preparation method as well as application thereof. A self-assembly method is used for introducing colorful acid dyes into the molecular structure of a conducting polymer to obtain the multi-color conducting polymer by regulating the molar ratio of the acid dyes and the conducting polymer monomer, the reaction time and the reaction temperature. In the molecular formula of the multi-color conducting polymer as shown in the specification, A is an acid dye containing sulfonic acid water soluble groups or carboxylic acid water soluble groups. The obtained material can be dissolved in organic solvents or can be blended with high molecular materials to be used for preparing conducting films, electronic devices, electroluminescent photochromic materials, electrochromic materials, electronic paper ink, anti-electrostatic materials, electromagnetic shielding materials, wave-absorbing materials, anti-corrosion materials or fillers of conducting fibers.

Description

technical field [0001] The invention belongs to the conductive polymer in the field of functional materials and its preparation method and application, in particular to a multi-color electrochromic conductive polymer and its preparation method and application. Background technique [0002] Electrochromism (Electrochromism) means that under the action of an applied current or electric field, the optical properties (transmittance, reflectivity, absorptivity, emissivity, etc.) Reversible changes in color and transparency. As a new generation of electrochromic materials, conductive polymers are compatible with inorganic electrochromic materials (such as WO 3 and IrO 2 ), it has the advantages of low cost, easy molecular design, rich colors and easy processing; compared with liquid crystal materials, conductive polymers have no viewing angle limitation, adjustable color change, large area, fast response speed, Good repeatability and other advantages have become the focus of ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08G73/06C08G61/12C09K9/02H05K9/00
Inventor 李昕李小宁李晓丽
Owner BEIJING INST OF CLOTHING TECH
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