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A kind of gel electrochromic material and preparation method thereof

An electrochromic material and gel technology, applied in the chemical field, can solve problems such as density changes that cannot be solved, and achieve the effects of solving the problem of long-term discoloration and migration, improving service life, and stabilizing relative positions

Active Publication Date: 2017-01-25
ATRA PLASTICS SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two methods of color-changing materials are free in the electrolyte, which cannot solve the density change caused by electron transfer. The migration caused by the relative displacement of the cathode and anode color-changing materials move, takes longer to recover)

Method used

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  • A kind of gel electrochromic material and preparation method thereof
  • A kind of gel electrochromic material and preparation method thereof
  • A kind of gel electrochromic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation of embodiment 1 electrochromic material is carried out in five steps:

[0030] (1) Dissolve 0.1 mol of 4,4'-bipyridine and 0.1 mol of bromoethane in 250 ml of acetonitrile solution, heat and reflux under stirring for 24 hours, put it in the refrigerator to cool, and filter after the crystals are precipitated to obtain About 0.075mol of 4-ethyl 4,4'-bipyridine derivatives; reacting 0.05mol of the above-mentioned monosubstituted 4,4'-bipyridine derivatives with 0.05mol of hexabromo-n-hexanol to obtain double bond-containing 4,4'-bipyridine disubstituted derivatives (I);

[0031] (2) 0.1mol of phenazine derivatives Dissolve 0.1 mol of bromoethane in 250 ml of acetonitrile solution, heat and reflux under stirring for 8 hours, put it in the refrigerator to cool, and filter after the crystals are precipitated to obtain about 0.06 mol of monosubstituted phenazine derivatives; 0.05 mol of The above-mentioned monosubstituted phenazine derivatives are reacted w...

Embodiment 2

[0035] The preparation of embodiment 2 electrochromic material is carried out in five steps:

[0036] (1) Dissolve 0.1mol of 4,4'-bipyridine and 0.1mol of bromobutane in 250ml of acetonitrile solution, heat and reflux under stirring for 24 hours, put it into the refrigerator to cool, and filter after the crystals are precipitated to obtain about 0.075mol of 4-butyl 4,4'-bipyridine derivatives; the above-mentioned monosubstituted 4,4'-bipyridine derivatives of 0.05mol are reacted with 0.05mol of hexabromo-n-hexanol to obtain 4 , 4'-bipyridine disubstituted derivatives (I);

[0037] (2) 0.1mol of phenazine derivatives Dissolve 0.1 mol of bromoethane in 250 ml of acetonitrile solution, heat and reflux under stirring for 8 hours, put it in the refrigerator to cool, and filter after the crystals are precipitated to obtain about 0.06 mol of monosubstituted phenazine derivatives; 0.05 mol of The above-mentioned monosubstituted phenazine derivatives are reacted with 0.05mol of brom...

Embodiment 3

[0041] Embodiment 3 The preparation of the electrochromic material is carried out in five steps:

[0042] (1) Dissolve 0.1mol of 4,4'-bipyridine and 0.1mol of bromoheptane in 250ml of acetonitrile solution, heat and reflux under stirring for 24 hours, put it in the refrigerator to cool, and filter after the crystals are precipitated to obtain about 0.075mol of 4-heptyl 4,4'-bipyridine derivatives; 0.05mol of the above-mentioned monosubstituted 4,4'-bipyridine derivatives reacted with 0.05mol of hexabromo-n-hexanol to obtain 4 containing double bonds , 4'-bipyridine disubstituted derivatives (I);

[0043] (2) 0.1mol of phenazine derivatives Dissolve 0.1 mol of bromoethane in 250 ml of acetonitrile solution, heat and reflux under stirring for 8 hours, put it in the refrigerator to cool, and filter after the crystals are precipitated to obtain about 0.06 mol of monosubstituted phenazine derivatives; 0.05 mol of The above-mentioned monosubstituted phenazine derivatives are reac...

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Abstract

The invention provides a gel electrochromic material which has a structural formula shown in the specification. The invention also provides a preparation method of the gel electrochromic material. The compound provided by the invention is obtained by combining a negative color-changeable group and a positive color-changeable group in to a whole, and linking the two groups to a branched chain of a polymer, so that the relative positions of the color-changeable groups can be ensured to be stable and cannot change by electrifying for a long time, so that the problem of long-time color change migration is effectively solved.

Description

[0001] Technical field: [0002] The invention relates to the field of chemistry, in particular to a gel electrochromic material and a preparation method. [0003] Background technique: [0004] Electrochromism refers to the phenomenon that the optical properties (transmittance, reflectivity or absorptivity) of a substance undergo a stable and reversible change within the wavelength range of visible light under the action of an external electric field or current. In terms of appearance, electrochromism is characterized by reversible changes in color and transparency, and is often used as a passive display device. Although the research on electrochromism has been reported since the 1930s and has made great progress, there are still many problems in theory and practical application. Viologen, rare earth phthalocyanine, pyrazine, polyaniline, and some conductive organic polymers are organic materials with electrochromic properties. Its discoloration mechanism is relatively compl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K9/02C07D401/14
Inventor 金哲君耿耀鸿吴纪峰
Owner ATRA PLASTICS SHANGHAI
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