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Electrochromic polymer materials and preparation of electrochromic devices based on combinatorial strategies

A technology of electrochromic devices and polymer materials, applied in the field of materials, can solve the problems of poor bistable performance, low coloring contrast, long fading time, etc.

Active Publication Date: 2021-05-11
上海鼎弈材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide an electrochromic polymer material based on a combination strategy, which solves the problems of low coloring contrast and poor bistable performance of electrochromic materials designed based on electroacids in the prior art
[0009] Another object of the present invention is to provide an electrochromic polymer material based on a combination strategy to prepare an electrochromic device, which solves the problem of electrochromic device response in the prior art based on electrochromic materials designed based on electroacids. Problems with slow speed and long fade time

Method used

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  • Electrochromic polymer materials and preparation of electrochromic devices based on combinatorial strategies
  • Electrochromic polymer materials and preparation of electrochromic devices based on combinatorial strategies
  • Electrochromic polymer materials and preparation of electrochromic devices based on combinatorial strategies

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Embodiment 1

[0051] In this embodiment, formula VI-1 is used as the electrochromic polymer, 1-butyl-3-methylimidazolium hexafluorophosphate is used as the electrolyte, and the two are mixed as an electrochromic polymer material based on a combination strategy. Acetonitrile was used as solvent. Wherein formula Ⅵ-1 is R in formula Ⅵ 1 , R 3 is N,N-diethyl, R 2 , R 4 , R 5 , R 6 is hydrogen, Y is oxygen, Ar is a benzene ring, Z 1 is methyl, P is polymethyl methacrylate, its structural formula is shown in formula VI-1, the preparation of electrochromic medium: 0.1mol of 1-butyl-3-methylimidazolium hexafluorophosphate as electrolyte, 400mg VI -1, dilute to 10mL with acetonitrile.

[0052]

[0053] Preparation of electrochromic device: Spin-coat the above electrochromic medium onto a clean ITO-1 electrode, and then assemble it into an electrochromic device. Under the condition of positive voltage +1.5V, the device consists of Colorless and transparent to pink; under a negative voltage...

Embodiment 2

[0057] In this embodiment, formula I-1 is used as the electrochromic polymer, lithium perchlorate is used as the electrolyte, the two are mixed as the electrochromic polymer material based on the combination strategy, and acetone is used as the solvent. Wherein formula I-1 is R in formula I 1 , R 3 is aminoethyl, R 2 , R 4 , R 5 , R 6 is hydrogen, Y is dimethyl silicon, Ar is a naphthalene ring, Z 1 is methyl, P is polyethylene, and its structural formula is shown in formula VI-1. Electrochromic medium preparation: 0.8g lithium perchlorate as electrolyte, 0.4g I-1, and dilute to 10mL with acetone.

[0058]

[0059] Preparation of electrochromic device: Spin-coat the above electrochromic medium onto a clean ITO-1 electrode, and then assemble it into an electrochromic device. The electrochromic device is under a positive voltage of +1.5V, and the device is made of The color becomes transparent to blue; under the negative voltage -1.20V, the blue becomes colorless and tr...

Embodiment 3

[0061] In this embodiment, formula II-1 is used as the electrochromic polymer, lithium tetrafluoroborate is used as the electrolyte, the two are mixed as the electrochromic polymer material based on the combination strategy, and dimethylacetamide is used as the solvent. Wherein formula Ⅱ-1 is R in formula Ⅱ 1 , R 3 is N,N-diethyl, R 2 , R 4 is hydroxyl, R 5 , R 6 is hydrogen, Ar is a benzene ring, Z 1 is H, P is polyamide, and its structural formula is shown in II-1 below. Preparation of electrochromic medium: Weigh 0.27g of lithium tetrafluoroborate, 0.28g of II-1 molecules, and dilute to 10mL with dimethylacetamide.

[0062]

[0063] Preparation of electrochromic device: Spin-coat the above electrochromic medium onto a clean ITO-1 electrode, and then assemble it into an electrochromic device. The electrochromic device is under a positive voltage of +1.5V, and the device is made of The color becomes transparent to purple; under the negative voltage of -1.2V, the purp...

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Abstract

The invention discloses an electrochromic polymer material based on a combination strategy and preparation of an electrochromic device. The electrochromic polymer material based on the combination strategy is formed by mixing an electrochromic polymer and an electrolyte. The electrochromic device is prepared based on the electrochromic polymer material of the combination strategy. The structure of the electrochromic device is composed of a first electrode, an electrochromic medium, an ion exchange membrane, an auxiliary medium and a second electrode. The invention not only improves the coloring efficiency and coloring contrast of the electrochromic device, but also accelerates the response speed of the electrochromic device, and at the same time, it can prolong the bistable display time, so that the electrochromic polymerization based on the combination strategy can be improved. The material possesses the advantages of color tunability and excellent cycle reversibility.

Description

technical field [0001] The invention belongs to the technical field of materials, in particular to an electrochromic polymer material based on a combination strategy and the preparation of an electrochromic device. Background technique [0002] Some organic molecules or groups are weakly acidic before oxidation, but the acidity increases significantly after oxidation. [0003] Based on a combinatorial strategy, combining electroacid molecules with acid-responsive molecules and grafting them onto the polymer backbone can be used to prepare novel electrochromic materials that utilize electricity to control the acidity of electroacid molecules, while different acidic It will stimulate the acid-responsive molecules to change color and produce electrochromic phenomenon. However, the previously reported electro-acid system is the behavior of small organic molecules. The electro-acid molecule and the acid-responsive molecule are the same or two different molecules. When the electr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/12C08L23/08C08L77/00C08L33/20C08L33/08C08K5/3445C08K3/24C08K3/38C09K9/02G02F1/1516
CPCC08K3/24C08K3/38C08K5/3445C09K9/02C09K2211/1416C09K2211/145C09K2211/1491G02F1/15C08L33/12C08L23/0892C08L77/00C08L33/20Y02P20/54
Inventor 张宇模王宇洋张蔚然郑文轩张晓安
Owner 上海鼎弈材料科技有限公司
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