Preparation method of compound electrochromic thin film

An electrochromic and thin-film technology, applied in the coating and other directions, can solve the problem that the electrochromic performance of a single conductive polymer cannot be satisfied, and achieve the effect of improving electrochromic performance, high sensitivity and expanding application fields.

Active Publication Date: 2017-08-11
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with inorganic electrochromic materials, conductive polymer electrochromic materials have great advantages in processability, color selection, device portability, flexibility and cost, but th...

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  • Preparation method of compound electrochromic thin film
  • Preparation method of compound electrochromic thin film
  • Preparation method of compound electrochromic thin film

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The preparation method of the conductive polyaniline / sodium diphenylamine sulfonate composite electrochromic film of this embodiment is:

[0028] Step 1. Preparation of polymerization reaction solution: the polymerization reaction solution is prepared by adding water to the monomer, doped acid and redox indicator. The concentration of the monomer in the polymerization reaction solution is 0.5 mol / L, and the concentration of the doped acid is 0.5 mol / L. mol / L, the concentration of the redox indicator is 0.005mol / L; the monomer is aniline; the doping acid is polystyrene sulfonic acid; the redox indicator is sodium diphenylamine sulfonate;

[0029] Step 2, in-situ chemical oxidation polymerization reaction: put the polymerization reaction solution described in step 1 in a cold water bath, and when the temperature of the polymerization reaction solution drops to 0°C, add the initiator in 3 times with an interval of 15 minutes each time In-situ chemical oxidation polymerizat...

Embodiment 2

[0038] The preparation method of the conductive poly(3,4-ethylenedioxythiophene) / wool poppy red A composite electrochromic film of this embodiment is:

[0039] Step 1. Preparation of polymerization reaction solution: the polymerization reaction solution is prepared by adding water to the monomer, doping acid and redox indicator, the concentration of monomer in the polymerization reaction solution is 0.1mol / L, and the concentration of doping acid is 0.1mol / L mol / L, the concentration of the redox indicator is 0.001mol / L; the monomer is 3,4-ethylenedioxythiophene; the doping acid is polystyrene sulfonic acid; the redox indicator It is wool poppy red A;

[0040] Step 2. In-situ chemical oxidation polymerization reaction: put the polymerization reaction solution described in step 1 in a cold water bath, and when the temperature of the polymerization reaction solution drops to 0°C, add the initiator in 3 times with an interval of 15 minutes each time to initiate the polymerization r...

Embodiment 3

[0049] The preparation method of the conductive poly(3-pyrrole carboxylic acid) / o-anilinobenzoic acid composite electrochromic film of the present embodiment is:

[0050] Step 1. Prepare the polymerization reaction solution: the polymerization reaction solution is prepared by adding water to the monomer, the doping acid and the redox indicator. The concentration of the monomer in the polymerization reaction solution is 0.2mol / L, and the concentration of the doping acid is 0.2mol / L. mol / L, the concentration of the redox indicator is 0.001mol / L; the monomer is 3-pyrrole carboxylic acid; the doping acid is dodecylbenzenesulfonic acid; the redox indicator is o-aniline benzoic acid;

[0051] Step 2. In-situ chemical oxidation polymerization reaction: put the polymerization reaction solution described in step 1 in a cold water bath, and when the temperature of the polymerization reaction solution drops to 0°C, add the initiator in 3 times with an interval of 15 minutes each time to ...

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Abstract

The invention discloses a preparation method of a compound electrochromic thin film. The method includes: adding water to a monomer, doping acid and an oxidation-reduction indicating agent to prepare a polymerization reaction solution, using an in-situ chemical oxidation polymerization method to compound the oxidation-reduction indicating agent with conductive polymer to obtain a conductive polymer/oxidation-reduction indicating agent compound electrochromic solution, and using the solution to form the electrochromic thin film on transparent conductive glass or a porous film through spin coating, spraying, lifting or printing film forming. The preparation method has the advantages that the color reaction of the oxidation-reduction indicating agent in the electrochromic process of the conductive polymer is utilized to improve the color changing performance of a conductive polymer electrochromic material, different macromolecule doping acids are used in the in-situ chemical polymerization reaction to obtain the water-soluble compound electrochromic solution, and the compound electrochromic thin film good in electrochromic performance is obtained finally.

Description

technical field [0001] The invention belongs to the technical field of electrochromic thin films, and in particular relates to a preparation method of a composite electrochromic thin film. Background technique [0002] Electrochromic materials can achieve reversible optical changes at a small driving voltage (<3V), and are widely used in smart windows, displays, military camouflage, infrared thermal radiation modulation, automotive anti-glare rearview mirrors and information storage, etc. field. Conductive polymers have reversible redox reaction characteristics, and their band gap and optical properties can undergo reversible changes under the action of an alternating electric field, making them the most studied type of electrochromic materials. Compared with inorganic electrochromic materials, conductive polymer electrochromic materials have great advantages in processability, color selection, device portability, flexibility and cost, but their color richness and contra...

Claims

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Application Information

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IPC IPC(8): C03C17/42C03C17/38
CPCC03C17/36C03C17/3644C03C17/3649C03C17/42C03C2217/231C03C2217/24C03C2217/241C03C2217/252C03C2217/255C03C2217/256C03C2217/70C03C2218/112C03C2218/116C03C2218/119
Inventor 熊善新
Owner XIAN UNIV OF SCI & TECH
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