Electrochromic material and electrochromic device

A technology of electrochromic materials and electrochromic devices, which is applied in the direction of color-changing fluorescent materials, instruments, chemical instruments and methods, etc., can solve the problems of shortened life and long fading time of electrochromic devices, and achieve fast discoloration and fading speed , long life effect

Active Publication Date: 2015-07-29
NINGBO MI RUO ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the amethyst compound is prone to irreversible damage, and the life of the electrochromic device is shortened accordingly.
[0006] In addition, due to the electron-donating properties of the R1 and R2 groups, the amethyst derivatives are prone to discoloration and accumulate on the pyridine ring after discoloration, and the fading time is longer

Method used

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  • Electrochromic material and electrochromic device
  • Electrochromic material and electrochromic device
  • Electrochromic material and electrochromic device

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Add 0.1mol of 3-methylpyridine and 0.025mol of sodium metal into the reaction flask, heat to 110°C and reflux for 24 hours. After the reaction is completed, cool to room temperature and pour the mixture into ice cubes to remove excess sodium metal. The reaction is complete. An oil-water mixture is obtained, and the oil-water separation is carried out. Add anhydrous sodium sulfate to the obtained oily matter, let it stand overnight, and then rotary evaporate under reduced pressure to remove excess 3-picoline. The product obtained after rotary evaporation is recrystallized in ethanol solution to obtain a white or light yellow product, namely 3,3-dimethyl-4,4-bipyridine. Take 0.02 mol of 3,3-dimethyl-4,4-bipyridine and dissolve it in 20 mL of acetonitrile solution, then add 0.05 mol of bromoethane, and reflux for 8 hours. After the reaction, the obtained mixed solution was filtered, and the filter cake was dissolved in deionized water, and sodium fluoroborate was added, ...

Embodiment 2

[0041]Add 0.1mol of 3-phenylpyridine and 0.025mol of sodium metal into the reaction flask, heat to 110°C and reflux for 24 hours, after the reaction is completed, cool to room temperature, and pour the mixture into ice cubes to make the excess sodium metal The reaction is complete. An oil-water mixture is obtained, and the oil-water separation is carried out. Add anhydrous sodium sulfate to the obtained oily matter, let it stand overnight, and then rotary evaporate under reduced pressure to remove excess 3-phenylpyridine. The product obtained after rotary evaporation is recrystallized in ethanol solution to obtain a white or light yellow product, namely 3,3-diphenyl-4,4-bipyridine. Take 0.02 mol of 3,3-diphenyl-4,4-bipyridine and dissolve it in 20 mL of acetonitrile solution, then add 0.05 mol of heptane bromide, and react under reflux for 8 hours. After the reaction, the obtained mixed solution was filtered, and the filter cake was dissolved in deionized water, and sodium p...

Embodiment 3

[0044] Add 0.1mol of quinoline and 0.025mol of sodium metal into the reaction flask, heat to 120°C and reflux for 24 hours. After the reaction is completed, cool to room temperature and pour the mixture into ice cubes to complete the reaction of excess sodium metal. An oil-water mixture is obtained, and the oil-water separation is carried out. Add anhydrous sodium sulfate to the obtained oily matter, let stand overnight, and then remove excess quinoline by rotary evaporation under reduced pressure. The product obtained after rotary evaporation is recrystallized in ethanol solution to obtain a white or light yellow product, namely 4-(quinolin-4-y1)quinoline. Take 0.02 mol of 4-(quinolin-4-yl)quinoline and dissolve it in 20 mL of acetonitrile solution, then add 0.05 mol of n-dodecane bromide, and react under reflux for 8 hours. After the reaction, the obtained mixed solution was filtered, and the filter cake was dissolved in deionized water, and sodium dodecylbenzenesulfonate w...

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Abstract

The invention discloses an electrochromic material and an electrochromic device. The electrochromic material is characterized in that the electrochromic material is a mixture which is composed of a cathode electrochromic material and an anode electrochromic material, wherein the anode electrochromic material is provided with three structure general formulas, different substituting groups are arranged on a pyridinium loop so as to aim to strengthen the stability of the structure which is converted to be in a planar state from a orthogonal state and charge dispersibility in the pyridinium loop in a color-changing process, and increase an electric potential difference delta E between the two states; and the electrochromic device comprises a transparent conductive glass and a conductive reflecting glass, wherein a transparent conducting layer (2) of the transparent conductive glass and a conductive reflecting layer (4) of the conductive reflecting glass are arranged oppositely, the peripheries of the transparent conductive glass and the conductive reflecting glass are glued through a glue body so as to form a cavity body, and the electrochromic material is filled in the cavity body. The electrochromic device provided by the invention has the characteristics of long service life and rapid color changing rate and discoloring rate, and is suitable for the fields of anti-dazzling automobile rearview mirrors for intelligent windows of light-dimmer glass for construction.

Description

[0001] This case is a divisional application, the filing date of the original application is: November 14, 2012, the application number is: 201210482670.2, and the name of the original application is "Electrochromic Materials and Electrochromic Devices". technical field [0002] The invention relates to an electrochromic material, in particular to an electrochromic material used in the fields of automatically darkening anti-glare rearview mirrors and related dimming glasses, and an electrochromic material prepared by using the electrochromic material. Color changing device. Background technique [0003] Under the action of DC voltage, the electrochromic material is oxidized or reduced, resulting in a reversible change in the transmission or reflection of visible light. At present, electrochromic materials are mainly divided into inorganic electrochromic materials and organic electrochromic materials. Inorganic electrochromic materials are mainly metal oxides such as tungsten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K9/02G02F1/153G02F1/15
Inventor 曹贞虎
Owner NINGBO MI RUO ELECTRONICS TECH CO LTD
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