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Electrochromic material, composition, preparation method, electrochromic device, shell assembly and electronic equipment

A technology of electrochromic materials and electrochromic devices, applied in the direction of color-changing fluorescent materials, electrical equipment shells/cabinets/drawers, electrical components, etc., can solve problems such as low contrast, material layering, and slow electrochromic response speed

Pending Publication Date: 2020-09-01
GUANGDONG OPPO MOBILE TELECOMM CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially when electrochromic devices use mixed electrochromic materials, such as organic anode electrochromic materials and cathodic electrochromic materials mixed as electrochromic active materials, material delamination and electrochromic response speed are more likely to occur. Problems with slowness, low contrast and poor aging resistance

Method used

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  • Electrochromic material, composition, preparation method, electrochromic device, shell assembly and electronic equipment
  • Electrochromic material, composition, preparation method, electrochromic device, shell assembly and electronic equipment
  • Electrochromic material, composition, preparation method, electrochromic device, shell assembly and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0062] Prepare the anode electrochromic material, the structural formula of the anode electrochromic material is as follows:

[0063]

[0064] Dissolve 19.7g of 4,4'-dimethyldiphenylamine and 19.3g of 4-(2-bromoethyl)tetrahydro-2H-pyran in 500g of toluene, stir and mix evenly to obtain a mixed solution, and then press potassium carbonate and The molar ratio of 4-(2-bromoethyl)tetrahydro-2H-pyran is 1:1. Add potassium carbonate, then add 2g of cuprous iodide, raise the temperature to 60-90℃, heat and condense and reflux for 4-96h to obtain the following formula: The crude product of the anode electrochromic material represented by the structural formula (1); the crude product is recrystallized with acetonitrile to obtain a refined anode electrochromic material.

[0065] The reaction product is 1 H-NMR and 13 C-NMR analysis confirms that it is the target product, and the analysis results are as follows:

[0066] 1H-NMR (300MHz, CDCL 3 ): δ6.84(4H), δ6.31(4H), δ3.6(2H), δ3...

example 2

[0069] Prepare the anode electrochromic material, the structural formula of the anode electrochromic material is as follows:

[0070]

[0071] Dissolve 22.9g of 4,4'-dimethoxydiphenylamine and 16.5g of 4-bromotetrahydropyran in 500g of toluene, stir and mix evenly to obtain a mixed solution, and Add potassium carbonate at a ratio of 1:1, then add 1.5g of cuprous iodide, heat up to 60-90°C, heat and condense to reflux for 4-96h, and obtain the crude anode electrochromic material shown in structural formula (2); The crude product is recrystallized with acetonitrile or toluene to obtain a refined anode electrochromic material shown in structural formula (2).

[0072] The reaction product is 1 H-NMR and 13 C-NMR analysis confirms that it is the target product, and the analysis results are as follows:

[0073] 1H-NMR (300MHz, CDCL 3 ): δ6.55(4H), δ6.32(4H), δ3.73(2H), δ3.6(2H), δ2.73(1H), δ1.78(2H).

[0074] 13C-NMR (75MHz, CDCL 3 ): 150.2, 141.4, 120.1, 115.2, 64.6, 55.9,...

example 3

[0076] Prepare the anode electrochromic material, the structural formula of the anode electrochromic material is as follows:

[0077]

[0078] Dissolve 23.7 g of m-trifluoromethyl diphenylamine and 22.6 g of 4-(iodomethyl) tetrahydropyran in 500 g of toluene, stir and mix to obtain a mixed solution, and then press potassium carbonate and 4-(iodomethyl) tetrahydropyran The molar ratio of hydropyran is 1:1. Add potassium carbonate, then add 1g of cuprous iodide, heat up to 60-90°C, heat and condense to reflux for 4-96h, and obtain the crude anode electrochromic material shown in structural formula (3) ; The crude product is recrystallized with acetonitrile or toluene to obtain a refined anode electrochromic material shown in structural formula (3).

[0079] The reaction product is confirmed to be the target product through 1H-NMR and 13C-NMR analysis, and the analysis results are as follows:

[0080] 1H-NMR (300MHz, CDCL3): δ7.04(2H), δ6.97(1H), δ6.77(1H), δ6.62(1H), δ6.58(1...

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PUM

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Abstract

The invention discloses an electrochromic material, a composition, a preparation method, an electrochromic device, a shell assembly and electronic equipment. The electrochromic material has a structural formula shown as a formula (I), wherein R1, R2, R3 and R4 are respectively and independently hydrogen, halogen, alkyl, haloalkyl or an oxygen-containing hydrocarbon functional group; Yis methyl, ethyl or one bond; and R6 and R7 are respectively and independently hydrogen, methoxy, methyl or trifluoromethyl. The electrochromic material has better durability, higher coloring state and transparentstate contrast and higher response speed, and is suitable for being applied to electronic equipment with higher requirements on discoloration / fading, such as mobile phones, mobile terminals or camerashooting equipment and the like.

Description

technical field [0001] The present application relates to the field, in particular, to electrochromic materials, compositions, preparation methods, electrochromic devices, casing components and electronic equipment. Background technique [0002] Electrochromism (elecrtochromism) means that when an electric field or current is applied to a color-changing material, the optical properties of the material (light transmittance, reflectivity or absorptivity) produce a stable and reversible color within a certain wavelength range including visible light wavelengths. phenomenon of change. In terms of appearance performance, electrochromism is manifested as a reversible change in color and transparency. When a certain polarity voltage is applied to the electrochromic material, the visible light transmittance of the material will increase accordingly, which is "fading". When the polarity of the voltage is opposite, the light transmittance of the material will decrease accordingly. R...

Claims

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Application Information

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IPC IPC(8): C09K9/02C07D309/04G02F1/1516H05K5/02
CPCC09K9/02C07D309/04G02F1/15165H05K5/0243G02F2001/15145C09K2211/1088C09K2211/1007
Inventor 曹贞虎彭明镇
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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