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Electrochromic material and preparation method thereof

An electrochromic material and electrode technology, applied in the direction of color-changing fluorescent materials, chemical instruments and methods, etc., can solve the problems of high oxidation potential, poor mechanical properties, and large energy consumption

Active Publication Date: 2015-12-30
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] According to the prior art, the preparation of indole conductive polymers mainly has the following disadvantages: 1. When electrochemical polymerization is used to prepare indole conductive polymers, the oxidation potential is relatively high and the energy consumption is relatively large.
2. Polybenzazole-based conductive polymers prepared in neutral solutions are mostly in the form of granules or powders with poor mechanical properties, making it difficult to carry out practical applications

Method used

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  • Electrochromic material and preparation method thereof
  • Electrochromic material and preparation method thereof
  • Electrochromic material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0019] (1) Put the Ag wire in a hydrochloric acid solution with a concentration of 4mol / L, and after electrolysis at a constant potential of 1.7V for 100s, a red AgCl adhesion layer is formed on the surface as a reference electrode. The ITO glass electrode was wiped clean with alcohol and used as the working electrode. The stainless steel electrode was polished with 1200-mesh sandpaper, rinsed with water, ethanol, and acetone in sequence, and dried to serve as a counter electrode.

[0020] (2) Weigh 0.0175 g of solid 4,5-dioxyethylene indole and dissolve it in 5 mL of boron trifluoride ether solution, and configure the reaction of 4,5-dioxyethylene indole monomer concentration of 0.02 mol / L solution. Combine the three electrodes in step (1), put them into the boron trifluoride ether solution containing 4,5-dioxethyleneindole monomer, apply a voltage of 0.5V.vs.SCE, and react for 50s.

[0021] (3) The working electrode in step (2) is taken out, and the poly(4,5-dioxyethylene ...

Embodiment 2

[0023] (1) Put the Ag wire in a hydrochloric acid solution with a concentration of 8mol / L, and after electrolysis at a constant potential of 1.4V for 60s, a red AgCl adhesion layer is formed on the surface as a reference electrode. The ITO glass electrode was wiped clean with alcohol and used as the working electrode. The stainless steel electrode was polished with 1200-mesh sandpaper, rinsed with water, ethanol, and acetone in sequence, and dried to serve as a counter electrode.

[0024] (2) Weigh 0.0175 g of solid 4,5-dioxyethylene indole and dissolve it in 5 mL of boron trifluoride ether solution, and configure the reaction of 4,5-dioxyethylene indole monomer concentration of 0.02 mol / L solution. Combine the three electrodes in step (1), put them into the boron trifluoride ether solution containing 4,5-dioxethyleneindole monomer, apply a voltage of 0.5V.vs.SCE, and react for 50s.

[0025] (3) The working electrode in step (2) is taken out, and the poly(4,5-dioxyethylene i...

Embodiment 3

[0027] (1) Put the Ag wire in a hydrochloric acid solution with a concentration of 6mol / L, and after electrolysis at a constant potential of 1.5V for 100s, a red AgCl adhesion layer is formed on the surface as a reference electrode. The ITO glass electrode was wiped clean with alcohol and used as the working electrode. The stainless steel electrode was polished with 1200-mesh sandpaper, rinsed with water, ethanol, and acetone in sequence, and dried to serve as a counter electrode.

[0028] (2) Weigh 0.018 g of solid 4,5-dioxyethylene indole and dissolve it in 5 mL of boron trifluoride ether solution, and configure the reaction in which the monomer concentration of 4,5-dioxyethylene indole is 0.021 mol / L solution. Combine the three electrodes in step (1), put them into the boron trifluoride ether solution containing 4,5-dioxethyleneindole monomer, apply a voltage of 0.5V.vs.SCE, and react for 45s.

[0029] (3) The working electrode in step (2) is taken out, and the poly(4,5-d...

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Abstract

The invention relates to an electrochromic material and a preparation method thereof. The electrochromic material is prepared from a monomer 4,5-dioxyethylene indole in a boron trifluoride-ether system by an electrochemical polymerization method. The poly(4,5-dioxyethylene indole) material prepared by the preparation method has excellent electrochromic property, good thermal stability, relatively high electric conductivity and good flexibility and self-supporting property, and the preparation process is small in energy consumption.

Description

technical field [0001] The invention relates to a material with good electrical conductivity and a preparation method, in particular to a poly(4,5-dioxyethylene indole) material with self-supporting properties and electrochromic properties and a preparation method thereof, belonging to electrochromic field of polymer materials. Background technique [0002] The key areas of research in the "Twelfth Five-Year Plan" of the National Natural Science Foundation of China include the design and preparation of optoelectronic materials, the preparation and performance characterization of optoelectronic prototype devices. One of the research hotspots of functional materials. According to comprehensive literature reports, the electrochromic materials researched and developed by people now mainly fall into the following categories: inorganic electrochromic materials, organic small molecule electrochromic materials and polymer electrochromic materials. Performance is the focus of curre...

Claims

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Application Information

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IPC IPC(8): C09K9/02C08G61/12
Inventor 聂广明李晨茜赵丹刘常龙
Owner QINGDAO UNIV OF SCI & TECH
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