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Cathodic electrochromic compound, and relevant medium and device thereof

An electrochromic and electrochromic device technology, applied in color-changing fluorescent materials, chemical instruments and methods, organic chemistry, etc., can solve the problem of single color change of viologen compounds

Inactive Publication Date: 2017-07-04
NINGBO MI RUO ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem of single color change of viologen compounds under an electric field, the present invention provides a cathodic electroactive compound, which exhibits different intermediate valence states under different potential differences and exhibits varying extinction coefficients for light of different wavelengths, so able to display different colors

Method used

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  • Cathodic electrochromic compound, and relevant medium and device thereof
  • Cathodic electrochromic compound, and relevant medium and device thereof
  • Cathodic electrochromic compound, and relevant medium and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] (1) synthesize the cathodic electroactive compound of following structural formula:

[0060]

[0061] The synthetic route and operation steps are as follows:

[0062]

[0063] Step 1: Disperse NaOH (20mmol) in polyethylene glycol (200mL) with an average molecular weight of 300g / mol, then add 4-acetylpyridine (20mmol) and 3,4-dimethoxy in sequence at 0°C Base benzaldehyde (10mmol), and react 2h at 0 ℃;

[0064] The second step: add ammonium acetate (0.5mol) to the reaction system obtained in the first step, and then incubate at 100° C. for 2 hours, during which precipitation gradually occurs;

[0065] Step 3: Add 500 mL of deionized water to the reaction system in the second step, and filter to obtain a precipitate. The obtained precipitate was washed with water and a small amount of ethanol in sequence, and dried under vacuum at 50°C for 12 hours to obtain the intermediate product 4;

[0066] Step 4: Take 4 mmol of the intermediate product 4 and dissolve it in ...

Embodiment 2

[0073] (1) synthesize the cathodic electroactive compound of following structural formula:

[0074]

[0075] The synthetic route and operation steps are as follows:

[0076]

[0077] Step 1: Disperse NaOH (20mmol) in polyethylene glycol (200mL) with an average molecular weight of 300g / mol, then add 4-acetylpyridine (20mmol) and 4-pyridinecarbaldehyde (10mmol) in sequence at 0°C , and react at 0°C for 2h;

[0078] The second step: add ammonium acetate (0.5mol) to the reaction system obtained in the first step, and then incubate at 100° C. for 2 hours, during which precipitation gradually occurs;

[0079] Step 3: Add 500 mL of deionized water to the reaction system in the second step, and filter to obtain a precipitate. The obtained precipitate was washed with water and a small amount of ethanol in sequence, and dried under vacuum at 50° C. for 12 hours to obtain the intermediate product 9;

[0080]Step 4: Dissolve 4 mmol of intermediate product 9 in 20 mL of acetonitri...

Embodiment 3

[0087] (1) synthesize the cathodic electroactive compound of following structural formula:

[0088]

[0089] The synthetic route and operation steps are as follows:

[0090]

[0091] The intermediate product 9 was obtained according to the first three steps of Example 2; 4 mmol of the intermediate product 10 was dissolved in 20 mL of acetonitrile solvent, and 20 mmol of bromoheptane was added, and the reaction was refluxed for 8 h. After the reaction, the solid was obtained by filtration, that is, the intermediate product 12; the intermediate product 12 was dissolved in deionized water, and then sodium tetrafluoroborate (20 mmol) was added to precipitate a precipitate, which was washed with water and dried to obtain the target product 13.

[0092] (2) Preparation of electrochromic device:

[0093] Dissolve the target product 13 in dimethylformamide according to the concentration of 50mmol / L and 2-tert-butyl-5,10-dihydro-5,10-dimethylphenazine according to the concentrat...

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Abstract

The invention discloses a cathodic electrochromic compound, and a relevant medium and a device thereof. The device is an electrochromic device containing the electrochromic medium, and the electrochromic medium comprises the cathodic electrochromic compound containing three or four quaternized pyridine rings. The voltage applied to the electrochromic device produced in the invention is adjusted to realize change among various colors.

Description

technical field [0001] The present invention relates to electrochromic materials for use in electrochromic devices, and more particularly to cathodic electrochromic compounds for use in solution phase electrochromic devices. Background technique [0002] Electrochromic materials are materials that change reversibly in color under an applied electric field. This color change can be from colorless to colored, such as WO 3 Under an external electric field, it changes from colorless and transparent to blue; it can also change from color to colorless, such as Prussian blue changes from blue to colorless under an external electric field; or from one color to another, For example, thiophene in organic matter changes from red to blue under an applied electric field. [0003] Electrochromic materials can be used to make a variety of devices and be used in various fields to improve the working and living environment. For example, electrochromic windows can adjust the indoor light an...

Claims

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Application Information

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IPC IPC(8): C09K9/02C07D213/22G02F1/15
CPCC09K9/02C07D213/22C09K2211/1029G02F1/15G02F2001/15145G02F2001/1518
Inventor 曹贞虎胡珊珊
Owner NINGBO MI RUO ELECTRONICS TECH CO LTD
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