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EDOT unit-containing polymer, preparation method thereof, and application of polymer as electrochromic material

A technology of polymers and substances, applied in the direction of color-changing fluorescent materials, chemical instruments and methods, etc., can solve the problems of single color, short cycle life, few electrochromic fields, etc., and achieve the effect of improving electrochromic performance.

Inactive Publication Date: 2020-04-21
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Poly-3,4-ethylenedioxythiophene (PEDOT) is a commonly used conductive polymer, but compared with other electrochromic materials, its cycle life is short and its color is single, which has been greatly restricted in practical applications.
Large conjugated aromatic compounds have highly polarized electronic systems and play an important role in the application of organic light-emitting diodes, dyes, and pigments, but they are rarely used in the field of electrochromism.

Method used

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  • EDOT unit-containing polymer, preparation method thereof, and application of polymer as electrochromic material
  • EDOT unit-containing polymer, preparation method thereof, and application of polymer as electrochromic material
  • EDOT unit-containing polymer, preparation method thereof, and application of polymer as electrochromic material

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Experimental program
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Embodiment 1

[0031] 3,4-ethylenedioxythiophene (EDOT) (0.43g, 3mmol), tetrabutylammonium bromide (1.93g, 6mmol) and potassium acetate (0.59g, 6mmol) were dissolved in 100mL N-methylpyrrolidone (NMP ), stirred at room temperature for 15 minutes. After 15 minutes, 2,6-dibromo-9,10-biphenylanthracene (purchased from the Petrochemical Research Institute of Heilongjiang Academy of Sciences) (1.92 g, 3 mmol) and palladium acetate (0.02 g, 3%) were added. The mixture was stirred and reacted at 140° C. for 24 hours under the protection of nitrogen. After the reaction, the mixture was cooled and poured into cold methanol for precipitation. The precipitate was filtered and purified by Soxhlet extraction using methanol, hexane and chloroform as solvents to obtain a dark red solid polymer containing EDOT units.

[0032] figure 1 The proton nuclear magnetic resonance spectrum of the polymer containing EDOT unit prepared for the present embodiment, as can be seen from the figure 1 H NMR (400MHz, Chl...

Embodiment 2

[0039] Dissolve 3,4-ethylenedioxythiophene (EDOT) (0.43g, 3mmol), tetrabutylammonium bromide (1.93g, 6mmol) and potassium carbonate (0.83g, 6mmol) in 100mL N,N-dimethyl Formamide (DMF), stirred at room temperature for 15 minutes. After 15 minutes 2,6-dibromo-9,10-biphenylanthracene (1.92 g, 3 mmol), palladium acetate (0.02 g, 3%) were added. The mixture was stirred and reacted at 140° C. for 24 hours under the protection of nitrogen. After the reaction, the mixture was cooled and poured into cold methanol for precipitation. The precipitate was filtered and purified by Soxhlet extraction using methanol, hexane and chloroform as solvents to obtain a dark red solid polymer containing EDOT units.

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Abstract

The invention belongs to the field of electrochromic materials, and discloses an EDOT unit-containing polymer, a preparation method thereof, and an application of the polymer as an electrochromic material. The EDOT unit-containing polymer has a structure represented by formula (I) shown in the description. The preparation method comprises the following steps: dissolving EDOT, tetrabutylammonium bromide and an alkali in an organic solvent, uniformly stirring and mixing at room temperature, then adding 2,6-dibromo-9,10-biphenyl anthracene and palladium acetate, carrying out a stirring reaction for 22-24 h at 130-140 DEG C under the protection of nitrogen, and separating and purifying the obtained reaction product to obtain the EDOT unit-containing polymer. The EDOT and a large conjugated aromatic compound are introduced into a polymer structure together, so that the electrochromic property of the polymer is improved.

Description

technical field [0001] The invention belongs to the field of electrochromic materials, in particular to a polymer containing EDOT units and its preparation and application as electrochromic materials. Background technique [0002] With the development of science and technology, human beings have higher and higher requirements for materials. Among them, electrochromic materials, as an emerging smart material, have attracted widespread public attention. Electrochromism is generally defined as the unique property of certain polymeric materials to undergo reversible color changes in themselves through changes in their redox state. Polymer electrochromic materials have attracted people's attention because of their molecular design diversity, wide color range and easy processing. [0003] At present, polythiophene, polyaniline, and polypyrrole are the main conductive polymer materials that people have studied more. Poly-3,4-ethylenedioxythiophene (PEDOT) is a commonly used condu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12C09K9/02
CPCC08G61/126C08G2261/124C08G2261/18C08G2261/314C08G2261/3243C08G2261/54C09K9/02C09K2211/1416C09K2211/1425C09K2211/1491
Inventor 汪成徐浩然马东阁侯艳君代岩峰张洪岩王淑红虢德超孙治尧白续铎韩晓宁
Owner SOUTH CHINA UNIV OF TECH
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