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Non-contact induced quick-response solid powder color-changing material and preparation method thereof

A fast-response, solid powder technology, applied in the direction of color-changing fluorescent materials, chemical instruments and methods, organic chemistry, etc., can solve the problems of loss of color-changing performance, limited application scenarios, ultraviolet light triggering, etc., and achieve reusable color change range span , Broaden the application scene, increase the effect of effective depth

Active Publication Date: 2021-06-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the core of the application of organic color-changing solid materials is mainly based on spiropyran compounds. Under the irradiation of ultraviolet light, the molecules will transform from the ring-closed spiropyran state to the open-ring merocyanine state. Since this process usually requires the introduction of Ultraviolet light and strong heat lead to solid color-changing materials based on this molecular design, which are usually accompanied by poor fatigue resistance, easy to be oxidized, or lose color-changing properties under strong light or high heat.
The specific main problems are: (1) ultraviolet light triggering
(3) Complex synthesis and high cost
Therefore, the preparation of traditional organic color-changing molecules has to face problems such as expensive raw materials, difficult purification, and complex synthesis.
These pain points greatly limit its application scenarios

Method used

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  • Non-contact induced quick-response solid powder color-changing material and preparation method thereof
  • Non-contact induced quick-response solid powder color-changing material and preparation method thereof
  • Non-contact induced quick-response solid powder color-changing material and preparation method thereof

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Effect test

Embodiment 1

[0049] A preferred embodiment of the present invention provides a method for preparing a solid powder color-changing material that induces a rapid response without contact, and the specific steps are as follows:

[0050] (1) Preparation of molecular intermediates of DASAs: Mix cyclo(methylene)isopropyl malonate and furfural, stir at 35° C. for about 4 hours, and obtain a yellow intermediate product. Then the obtained yellow product was washed with water and suction filtered to remove the water therein. Then use saturated sodium bisulfite and saturated sodium chloride aqueous solution to extract the intermediate product to remove impurities therein, then use anhydrous magnesium sulfate or anhydrous sodium sulfate to further remove the moisture in the intermediate, and filter Remove anhydrous magnesium sulfate. Finally, the intermediate was finally purified by column chromatography, and the eluent was dichloromethane (DCM). Finally, the purified intermediate was obtained and t...

Embodiment 2

[0055] A preferred embodiment of the present invention provides a method for preparing a solid powder color-changing material that induces a rapid response without contact, and the specific steps are as follows:

[0056] (1) Preparation of molecular intermediates of DASAs: Mix cyclo(methylene)isopropyl malonate and furfural, stir at 35° C. for about 4 hours, and obtain a yellow intermediate product. Then the obtained yellow product was washed with water and suction filtered to remove the water therein. Then use saturated sodium bisulfite and saturated sodium chloride aqueous solution to extract the intermediate product to remove impurities therein, then use anhydrous magnesium sulfate or anhydrous sodium sulfate to further remove the moisture in the intermediate, and filter Remove anhydrous magnesium sulfate. Finally, the intermediate was finally purified by column chromatography, and the eluent was dichloromethane (DCM). Finally, the purified intermediate was obtained and t...

Embodiment 3

[0061] A preferred embodiment of the present invention provides a method for preparing a solid powder color-changing material that induces a rapid response without contact, and the specific steps are as follows:

[0062] (1) Preparation of molecular intermediates of DASAs: Mix cyclo(methylene)isopropyl malonate and furfural, stir at 35° C. for about 4 hours, and obtain a yellow intermediate product. Then the obtained yellow product was washed with water and suction filtered to remove the water therein. Then use saturated sodium bisulfite and saturated sodium chloride aqueous solution to extract the intermediate product to remove impurities therein, then use anhydrous magnesium sulfate or anhydrous sodium sulfate to further remove the moisture in the intermediate, and filter Remove anhydrous magnesium sulfate. Finally, the intermediate was finally purified by column chromatography, and the eluent was dichloromethane (DCM). Finally, the purified intermediate was obtained and t...

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Abstract

The invention discloses a non-contact induced quick-response solid powder color-changing material and a preparation method thereof. The preparation method comprises the following steps of S1, preparing a DASAs molecular intermediate, S2, preparing a DASA-1 molecule, S3, preparing a DASA-2 molecule, S4, preparing a porous material A, S5, preparing a porous material B, and S6, integration. The porous material is used as a carrier, the state of molecules in a solution is simulated, the donor-acceptor Steinporus adduct is uniformly distributed in the pore channels of the porous material, and the originally stacked molecules are separately separated, so that the problem that the color is not changed in a solid state due to a molecular stacking effect is fundamentally solved.

Description

technical field [0001] The invention belongs to the technical field of color-changing solid materials, in particular to a non-contact induced rapid-response solid powder color-changing material and a preparation method thereof. Background technique [0002] Today, with the development of science and technology and the continuous efforts of the academic community, color-changing solid materials have been widely used in information processing, automobiles, construction, electronics, textile printing and dyeing and other industries. According to the different induction conditions, the color-changing materials are mainly divided into five categories: light, heat, electricity, gas and liquid stimulation. Among them, photochromic materials can efficiently and cleanly regulate the physical and chemical properties of materials due to their remote and precise control characteristics. [0003] Photochromic solids are mainly divided into two categories: organic photochromic and inorga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K9/02C07D319/06
CPCC09K9/02C07D319/06C09K2211/1088C09K2211/1007
Inventor 王东升孙梵熙郑永豪
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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