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Compound, preparation method thereof, electrochromic material, electrochromic device and preparation method ofelectrochromic device

A technology of electrochromic devices and electrochromic materials, which is applied in the field of color-changing materials, can solve the problems of complex preparation process and relatively high material solubility requirements, and achieve the effect of simple preparation process, simple and easy preparation method, and fast discoloration speed

Pending Publication Date: 2021-11-09
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The electrochromic layer and the counter electrode layer of the traditional layered device exist in the form of a thin film, which can form a spectrally complementary combination, but the preparation process is relatively complicated; the gel integrated device has the advantage of simple preparation process, but for each component The solubility requirement of the material is relatively high

Method used

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  • Compound, preparation method thereof, electrochromic material, electrochromic device and preparation method ofelectrochromic device
  • Compound, preparation method thereof, electrochromic material, electrochromic device and preparation method ofelectrochromic device
  • Compound, preparation method thereof, electrochromic material, electrochromic device and preparation method ofelectrochromic device

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preparation example Construction

[0041] According to another aspect of the present invention, the present invention also relates to the preparation method of said compound, comprising the following steps:

[0042] The mixture of raw material B, raw material C and organic solvent is reacted under heating conditions;

[0043] The raw material C is iodopentane or bromopentane;

[0044] The raw material B has the structure described in formula (II):

[0045]

[0046] The preparation method of the compound in the invention is simple and easy, and the product yield is high.

[0047] Preferably, the first organic solvent includes 1,4-N,N-dimethylformamide (DMF).

[0048] Preferably, the molar ratio of the raw material B to the raw material C is (0.8-1): (3-4).

[0049] In one embodiment, the molar ratio of the raw material B to the raw material C is 0.8:3, 0.84:3.5, 0.9:3.7 or 1:4.

[0050] Preferably, the heating temperature is 60-80°C.

[0051] Preferably, the reaction time is 65-80 hours.

[0052] In one...

Embodiment 1

[0101] A preparation method of a compound, comprising the following steps:

[0102] Compound A (2,5-dibromothiophene) (424mg, 1.77mmol), 4-pyridineboronic acid pinacol ester (1g, 4.9mmol), tetrakistriphenylphosphopalladium (204mg, 0.176mmol) and potassium phosphate ( 2.98g, 14.1mmol) into a 25mL round bottom flask, and then add 10mlL of 1,4-N,N-dimethylformamide (DMF) and dioxane mixed solution (the volume ratio of the two is 1:1 ), use the bubbling method to degas for 30 minutes, then heat the reaction solution to 130 ° C, react under nitrogen atmosphere for 72 hours, cool to room temperature and filter; the organic phase is concentrated in vacuo, and the residue is washed with chloroform CHCl 3 Dissolve, wash three times in deionized water, then add concentrated hydrochloric acid HCl (about 1 mL) to the organic phase to precipitate the product from solution, the precipitate is collected by filtration, then dissolved in water, finally, sodium hydroxide (NaOH, 15M ) aqueous s...

Embodiment 2

[0108] An electrochromic device such as Figure 4 As shown, it includes a first conductive layer 1, an electrolyte gel-film layer 3 and a second conductive layer 2; the electrolyte gel-film layer is located between the first conductive layer 1 and the second conductive layer 2;

[0109]Among them, the electrolyte gel-film layer 3 is mainly composed of electrolyte gel and Parafilm film, the thickness of Parafilm film is 80 μm, and the Parafilm is provided with round holes with a diameter of 16 mm; the electrolyte gel is at least covered with the round holes on the Parafilm The electrolyte gel is mainly composed of electrolyte and the compound TBPP prepared in Example 1, and the electrolyte is lithium perchlorate;

[0110] The first conductive layer 1 is ITO conductive glass; the second conductive layer 2 is an ITO conductive glass whose surface is coated with a Prussian blue film layer 4;

[0111] The preparation method of the color-changing device of the present embodiment co...

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Abstract

The invention relates to the technical field of color-changing materials, and concretely relates to a compound, a preparation method thereof, an electrochromic material, an electrochromic device and a preparation method of the electrochromic device. The compound provided by the invention has a structure as shown in a formula (I). The compound provided by the invention has visible and near-infrared double-light-region absorption, and the prepared electrochromic device undergoes high-transparency light yellow, light purple, purple and blue-black color conversion in the process from positive voltage to negative voltage; and the compound can form spectral complementation with Prussian blue, so that the device has higher absorption values in the whole visible light and near-infrared regions, and the visible-near-infrared total-absorption electrochromic device is obtained and has the capability of quickly adjusting light rays.

Description

technical field [0001] The invention relates to the technical field of color-changing materials, in particular to a compound and a preparation method thereof, an electrochromic material, an electrochromic device and a preparation method thereof. Background technique [0002] Electrochromism refers to the phenomenon that the optical properties of a material or device undergo a stable and reversible color change under the action of an external electric field, which is manifested as a reversible change in color and transparency in appearance. At present, there are two main types of electrochromic devices based on viologen materials: 1) similar to the "sandwich" structure, from left to right are transparent conductive layer, electrochromic layer, electrolyte layer, ion storage layer, transparent conductive layer; 2) Gel integrated structure, including transparent conductive layer, electrochromic material / electrolyte / electrode material, transparent conductive layer). [0003] Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D409/14C09K9/02G02F1/1516G02F1/153G02F1/155G02F1/163
CPCC07D409/14C09K9/02G02F1/1516G02F1/155G02F1/1533G02F1/163C09K2211/1029C09K2211/1088
Inventor 苏峰育代宏博凌欢孙方园田颜清刘言军
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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