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A kind of d-a-d' asymmetric structure polymer membrane pswt and its preparation method and application

An asymmetric structure, D-A-D technology, applied in nonlinear optics, instruments, optics, etc., can solve the problems of general optical contrast, single color display, single oxidation potential, etc., to achieve uniform film morphology, easy control structure, and preparation The effect of low energy consumption

Active Publication Date: 2020-12-25
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems of the existing D-A-D symmetrical conjugated polymer PSWS such as single oxidation potential, single color display and general optical contrast, the purpose of the present invention is to provide a D-A-D' asymmetric structure polymer PSWT and its preparation method and application. The D-A-D' asymmetric structure polymer PSWT not only makes the electrochromic display richer, but also has a high optical contrast

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

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] (1) Preparation of monomer SWT

[0058]First, 2,7-dibromo-9 fluorenone (3mmol, 1.044g), 2-thiophene boronic acid (1.5mmol, 0.4335g), potassium carbonate (2mmol, 0.2764g) and tetrakis (three) phenyl phosphopalladium ( 0.0025mmol, 0.0311g) was dissolved in a mixed solution of tetrahydrofuran (20ML) and toluene (30ML) under the condition of nitrogen protection, and 2ml of deionized water was added, and refluxed for 8 hours. and dichloromethane mixed reagent extraction, the obtained organic phase was dried by adding anhydrous magnesium sulfate, and then the sample was mixed by rotary evaporation, and the corresponding mobile phase was selected for column chromatography, and finally 2-thiophene-7-bromo-9-fluorenone mono After that, the obtained 2-thiophene-7-bromo-9-fluorenone monomer (3mmol, 1.022g), 4-(diphenylamino)phenylboronic acid (3mmol, 0.876g), potassium carbonate ( 2mmol, 0.2815g) and tetrakis(tri)phenylphosphopalladium (0.025mmol, 0.031g) were dissolved in a mixe...

Embodiment 2

[0066] (1) Preparation of monomer SWT

[0067] First, 2,7-dibromo-9 fluorenone (3mmol, 1.044g), 2-thiophene boronic acid (1.5mmol, 0.4335g), potassium carbonate (2mmol, 0.2764g) and tetrakis (three) phenyl phosphopalladium ( 0.0025mmol, 0.0311g) was dissolved in a mixed solution of tetrahydrofuran (20ML) and toluene (30ML) under the condition of nitrogen protection, and 2ml of deionized water was added, and refluxed for 8 hours. and dichloromethane mixed reagent extraction, the obtained organic phase was dried by adding anhydrous magnesium sulfate, and then the sample was mixed by rotary evaporation, and the corresponding mobile phase was selected for column chromatography, and finally 2-thiophene-7-bromo-9-fluorenone mono After that, the obtained 2-thiophene-7-bromo-9-fluorenone monomer (3mmol, 1.022g), 4-(diphenylamino)phenylboronic acid (3mmol, 0.876g), potassium carbonate ( 2mmol, 0.2815g) and tetrakis(tri)phenylphosphopalladium (0.025mmol, 0.031g) were dissolved in a mix...

Embodiment 3

[0073] (1) Preparation of monomer SWT

[0074] First, 2,7-dibromo-9 fluorenone (3mmol, 1.044g), 2-thiophene boronic acid (1.5mmol, 0.4335g), potassium carbonate (2mmol, 0.2764g) and tetrakis (three) phenyl phosphopalladium ( 0.0025mmol, 0.0311g) was dissolved in a mixed solution of tetrahydrofuran (20ML) and toluene (30ML) under the condition of nitrogen protection, and 2ml of deionized water was added, and refluxed for 8 hours. and dichloromethane mixed reagent extraction, the obtained organic phase was dried by adding anhydrous magnesium sulfate, and then the sample was mixed by rotary evaporation, and the corresponding mobile phase was selected for column chromatography, and finally 2-thiophene-7-bromo-9-fluorenone mono After that, the obtained 2-thiophene-7-bromo-9-fluorenone monomer (3mmol, 1.022g), 4-(diphenylamino)phenylboronic acid (3mmol, 0.876g), potassium carbonate ( 2mmol, 0.2815g) and tetrakis(tri)phenylphosphopalladium (0.025mmol, 0.031g) were dissolved in a mix...

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Abstract

The invention provides a D-A-D' asymmetric structure polymer membrane PSWT and a preparation method and application of the D-A-D' asymmetric structure polymer membrane PSWT. The method is as follows:implementing a coupling reaction on 2,7-dibromo-9-fluorenone under the action of an electron donating group to form an asymmetric DAD' structure monomer, polymerizing the asymmetric DAD' structure monomer in a three-electrode electrolytic tank system, having a polymerization reaction at the room temperature by using a cyclic voltammetry polymerization method, and obtaining the D-A-D' asymmetric structure polymer membrane PSWT deposited on a working electrode. The operation method is simple, the yield of the monomer and the purity of the polymer membrane are relatively high, a prepared producthas a more prominent multicolor display performance and an excellent electrochromic performance, and the material can be applied to the electrochromic devices.

Description

technical field [0001] The invention relates to a D-A-D' (donor-acceptor-donor') asymmetric polymer film PSWT with multicolor display and a preparation method thereof, and the material can be applied to 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 changing performance of electrochromic m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/12C08L65/00C08J5/18G02F1/153
CPCC08G61/126C08G2261/11C08G2261/3223C08G2261/54C08J5/18C08J2365/00G02F1/153
Inventor 张诚李林刘军磊欧阳密
Owner ZHEJIANG UNIV OF TECH