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D-A-D' asymmetric-structure polymeric film PEWT and preparation method and application thereof

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

Active Publication Date: 2018-11-20
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems of the existing D-A-D symmetrical conjugated polymer PEWE with a single oxidation potential and a single color display with a general optical contrast, the purpose of the present invention is to provide a D-A-D' asymmetric structure polymer PEWT, and find that the polymer not only enables The electrochromic display is richer and has a higher optical contrast at a certain wavelength

Method used

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  • D-A-D' asymmetric-structure polymeric film PEWT and preparation method and application thereof
  • D-A-D' asymmetric-structure polymeric film PEWT and preparation method and application thereof
  • D-A-D' asymmetric-structure polymeric film PEWT and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Preparation of monomeric EWT

[0055] First, 2,7-dibromo-9 fluorenone (3mmol, 1.044g), 4-(diphenylamino)phenylboronic acid (1.5mmol, 0.438g), potassium carbonate (2mmol, 0.2764g) and tetra( 3) Phenylphosphopalladium (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, refluxed for 8 hours, and the system was After cooling, extract with a mixed reagent of deionized water and dichloromethane, add anhydrous magnesium sulfate to the obtained organic phase to dry, then rotate the sample, select the corresponding mobile phase for column chromatography, and finally obtain 2-triphenylamine-7- Bromo-9-fluorenone monomer; After that, 2-triphenylamine-7-bromo-9-fluorenone monomer (3mmol, 1.503g), tributyl (2,3-dihydrothieno[3 , 4-b]-[1,4]dioxin-5-yl)stannane (3mmol, 1.2963g), potassium carbonate (2mmol, 0.2764g) and bistriphenylphosphine dichloride...

Embodiment 2

[0064] (1) Preparation of monomeric EWT

[0065] First, 2,7-dibromo-9 fluorenone (3mmol, 1.044g), 4-(diphenylamino)phenylboronic acid (1.5mmol, 0.438g), potassium carbonate (2mmol, 0.2764g) and tetra( 3) Phenylphosphopalladium (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, refluxed for 6 hours, and the system After cooling, extract with a mixed reagent of deionized water and dichloromethane, add anhydrous magnesium sulfate to the obtained organic phase to dry, then rotate the sample, select the corresponding mobile phase for column chromatography, and finally obtain 2-triphenylamine-7- Bromo-9-fluorenone monomer; After that, 2-triphenylamine-7-bromo-9-fluorenone monomer (3mmol, 1.503g), tributyl (2,3-dihydrothieno[3 , 4-b]-[1,4]dioxin-5-yl)stannane (3mmol, 1.2963g), potassium carbonate (2mmol, 0.2764g) and bistriphenylphosphine dichloride pal...

Embodiment 3

[0071] (1) Preparation of monomeric EWT

[0072] First, 2,7-dibromo-9 fluorenone (3mmol, 1.044g), 4-(diphenylamino)phenylboronic acid (1.5mmol, 0.438g), potassium carbonate (2mmol, 0.2764g) and tetra( 3) Phenylphosphopalladium (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, refluxed for 8 hours, and the system was After cooling, extract with a mixed reagent of deionized water and dichloromethane, add anhydrous magnesium sulfate to the obtained organic phase to dry, then rotate the sample, select the corresponding mobile phase for column chromatography, and finally obtain 2-triphenylamine-7- Bromo-9-fluorenone monomer; After that, 2-triphenylamine-7-bromo-9-fluorenone monomer (3mmol, 1.503g), tributyl (2,3-dihydrothieno[3 , 4-b]-[1,4]dioxin-5-yl)stannane (3mmol, 1.2963g), potassium carbonate (2mmol, 0.2764g) and bistriphenylphosphine dichloride...

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Abstract

The invention provides a DAD' asymmetric-structure polymeric film PEWT and a preparation method and the application thereof. The preparation method comprises the following steps: performing a couplingreaction on 2,7-dibromo-9 fluorenone shown as a formula 1 to form an asymmetric DAD' structural monomer under the action of an electron donating group, performing a polymerization reaction by a cyclic voltammetric polymerization method at a room temperature to obtain an asymmetric DAD' structural polymeric film depositing on a working electrode. By the preparation method, the operation is simple,the monomer yield and the purity of the polymeric film are relatively high, the prepared product has more prominent multicolor display performance and excellent electrochromic performance, and the material can be applied to an electrochromic device.

Description

technical field [0001] The present invention relates to a D-A-D' (donor-acceptor-donor') asymmetric polymer film PEWT with multi-color display and its preparation method. The D-A-D' asymmetric polymer film PEWT can be applied to the preparation Electrochromic devices. technical background [0002] 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 multi-color 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 between different molecules. It is not conducive to the mechanism research on the color changing performance of e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12C08L65/00C08J5/18G02F1/15
CPCC08G61/126C08G2261/11C08G2261/228C08G2261/3243C08G2261/354C08G2261/54C08J5/18C08J2365/00G02F1/15
Inventor 刘军磊李林欧阳密张诚
Owner ZHEJIANG UNIV OF TECH