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A kind of d-a-d' asymmetric structure polymer film pswe and its preparation method and application

An asymmetric structure, D-A-D technology, applied in the direction of electrolytic organic material coating, etc., can solve the problems of single color display, single oxidation potential, general optical contrast, etc.

Active Publication Date: 2020-10-27
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the existing D-A-D symmetric conjugated polymer PSWS existing problems such as single oxidation potential, discoloration display single optical contrast, etc., the object of the present invention is to provide a D-A-D' asymmetric structure polymer PSWE, and found that the polymer not only makes Electrochromic displays are richer and have faster response times

Method used

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  • A kind of d-a-d' asymmetric structure polymer film pswe and its preparation method and application
  • A kind of d-a-d' asymmetric structure polymer film pswe and its preparation method and application
  • A kind of d-a-d' asymmetric structure polymer film pswe and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) Preparation of monomeric SWE

[0057]First, 2,7-dibromo-9 fluorenone (2mmol, 0.6760g), 2-boronic acid thiophene (1mmol, 0.1280g), potassium carbonate (2mmol, 0.2764g) and tetrakis(tri)phenylphosphopalladium (0.025 mmol, 0.0311g) was dissolved in a mixed solution of tetrahydrofuran (20ML) and toluene (30ML) under the condition of nitrogen protection, and added 2ml of deionized water, and refluxed for 8 hours. After the system was cooled, deionized water and Dichloromethane mixed reagent extraction, the resulting organic phase was added to anhydrous magnesium sulfate to dry, then rotary steamed and mixed samples, select the corresponding mobile phase (volume ratio PE: DCM = 1: 2) column chromatography, and finally get 2,7- Dibromo-9 fluorenone monosubstituted the corresponding monomer; after that, 3,4-ethylenedioxythiophene (EDOT) was tinned, and EDOT (14mmol, 2g) was dissolved in THF solvent (80ml) after redistillation , at -78°C, slowly add n-butyllithium (1.6M) dr...

Embodiment 2

[0065] (1) Preparation of monomeric SWE

[0066] First, 2,7-dibromo-9 fluorenone (2mmol, 0.6760g), 2-boronic acid thiophene (1mmol, 0.1280g), potassium carbonate (2mmol, 0.2764g) and tetrakis(tri)phenylphosphopalladium (0.025 mmol, 0.0311g) was dissolved in a mixed solution of tetrahydrofuran (20ML) and toluene (30ML) under the condition of nitrogen protection, and added 2ml of deionized water, and refluxed for 8 hours. After the system was cooled, deionized water and Dichloromethane mixed reagent extraction, the resulting organic phase was added to anhydrous magnesium sulfate to dry, then rotary steamed and mixed samples, select the corresponding mobile phase (volume ratio PE: DCM = 1: 2) column chromatography, and finally get 2,7- Dibromo-9 fluorenone monosubstituted the corresponding monomer; after that, 3,4-ethylenedioxythiophene (EDOT) was tinned, and EDOT (14mmol, 2g) was dissolved in THF solvent (80ml) after redistillation , at -78°C, n-butyllithium (1.6M) was slowly a...

Embodiment 3

[0072] (1) Preparation of monomeric SWE

[0073] First, 2,7-dibromo-9 fluorenone (2mmol, 0.6760g), 2-boronic acid thiophene (1mmol, 0.1280g), potassium carbonate (2mmol, 0.2764g) and tetrakis(tri)phenylphosphopalladium (0.025 mmol, 0.0311g) was dissolved in a mixed solution of tetrahydrofuran (20ML) and toluene (30ML) under the condition of nitrogen protection, and added 2ml of deionized water, and refluxed for 8 hours. After the system was cooled, deionized water and Dichloromethane mixed reagent extraction, the resulting organic phase was added to anhydrous magnesium sulfate to dry, then rotary steamed and mixed samples, select the corresponding mobile phase (volume ratio PE: DCM = 1: 2) column chromatography, and finally get 2,7- Dibromo-9 fluorenone monosubstituted the corresponding monomer; after that, 3,4-ethylenedioxythiophene (EDOT) was tinned, and EDOT (14mmol, 2g) was dissolved in THF solvent (80ml) after redistillation , at -78°C, n-butyllithium (1.6M) was slowly a...

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Abstract

The invention provides D-A-D' asymmetric structural polymer membrane PSWE and a preparation method and application thereof. 2,7-Dibromo-9-fluorenone shown as formula 1 is subjected to coupling reaction under the action of an electron donating group to form an asymmetric DAD' structural monomer; the asymmetric DAD' structural monomer in a tri-electrode electrolytic cell is subjected to polymerization at room temperature via cyclic voltammetry polymerization process to obtain the asymmetric DAD' structural polymer membrane on a working electrode. The preparation method is simple to perform; themonomer yield and polymer membrane purity are high; the product prepared has more outstanding multicolor displaying and excellent electrochromic performance; the product is applicable to electrochromic devices.

Description

technical field [0001] The present invention relates to a D-A-D' (donor-acceptor-donor') asymmetric polymer membrane with multicolor display and a preparation method thereof, and the D-A-D' asymmetric polymer membrane PSWE can be applied for the preparation of electrochromic devices. [0002] technical background [0003] Since the discovery of polymer electrochromic (PEC) materials, compared with inorganic electrochromic materials, they are considered to be the next generation of EC due to their advantages of easy structure modification, high coloring efficiency, high optical contrast, and fast response speed. One of the development directions of materials. At present, the methods for realizing multicolor display of electrochromic polymers through molecular design or modification mainly include the design of the molecular structure of the donor-acceptor (D-A) and the copolymerization of different molecules. Certainty is not conducive to the mechanism research on the color ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/12C08J5/18C25D9/02
CPCC08G61/126C08G2261/11C08G2261/18C08G2261/3223C08G2261/3247C08G2261/54C08J5/18C08J2365/00C25D9/02
Inventor 张诚张凯立李林刘军磊刘刚欧阳密
Owner ZHEJIANG UNIV OF TECH