Piezofluorescent color changing material with intercalation structure and preparation method thereof

A color-changing material and pressure-induced technology, applied in the direction of color-changing fluorescent materials, luminescent materials, chemical instruments and methods, etc., to achieve the effect of expanding the application range and excellent performance

Active Publication Date: 2011-02-16
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no intercalation materials with piezofluorescent properties have been reported so far.

Method used

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  • Piezofluorescent color changing material with intercalation structure and preparation method thereof
  • Piezofluorescent color changing material with intercalation structure and preparation method thereof
  • Piezofluorescent color changing material with intercalation structure and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] 1. Weigh 1.282g Mg(NO 3 ) 2 ·6H 2 O, 0.938g Al(NO 3 ) 3 9H 2 O and 5.438g fluorescent whitening agent 357 were dissolved in 200ml to remove CO 2 1. In deionized water, stir and dissolve to obtain solution A;

[0024] 2. Dissolve another 0.6g NaOH in 100ml to remove CO 2 , deionized water to obtain solution B;

[0025] 3. Using the co-precipitation method, pass solution B through a constant pressure funnel, and add it dropwise to the four-necked bottle containing solution A under the condition of nitrogen protection. After the dropwise addition, adjust the pH to 8.0 with NaOH, and put the four-necked bottle Put it in a water bath at 70°C and react for 18h under the condition of nitrogen protection. 2 , fully washed with deionized water and centrifuged for 5 times until the washing liquid is colorless; vacuum-dried at 50°C for 24 hours to obtain a yellow-white powder, and after grinding to obtain the fluorescent whitening agent 357 anion-intercalated hydrotalcite ...

Embodiment 2

[0028] 1. Weigh 2.975g Zn(NO 3 ) 2 ·6H 2 O, 1.876g Al(NO 3 ) 3 9H 2 O and 10.875g fluorescent whitening agent 357 were dissolved in 150ml to remove CO 2 1. In deionized water, stir and dissolve to obtain solution A;

[0029] 2. Dissolve another 1.2g NaOH in 100ml to remove CO 2 , deionized water to obtain solution B;

[0030] 3. Using the co-precipitation method, pass solution B through a constant pressure funnel, and add dropwise to the four-necked bottle containing solution A under the condition of nitrogen protection. After the dropwise addition, adjust the pH to 10.0 with NaOH, and put the four-necked bottle Put it in a water bath at 80°C and react for 20h under the condition of nitrogen protection. 2 1. Fully wash with deionized water and centrifuge for 6 times until the washing liquid is colorless; vacuum dry at 70°C for 20 hours to obtain a yellow-white powder, and after grinding, obtain the fluorescent whitening agent 357 anion-intercalated hydrotalcite. Materia...

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Abstract

The invention discloses a piezofluorescent color changing material with an intercalation structure and a preparation method thereof, belonging to the field of inorganic and organic composite intelligent materials. In the invention, a piezofluorescent color changing material of fluorescent brightening agent 357 anion intercalation layered double hydroxides (LDHs) is prepared by adopting a coprecipitation method. The invention has the advantages that the molecular immobilization of a fluorescent brightening agent 357 is realized by carrying out sequential orienting arrangement on fluorescent guest molecules among LDHs layers; and a molecular accumulating form of the fluorescent brightening agent 357 among the LDHs layers can be continuously changed by applying external pressure so as to realize the aim of adjusting and controlling the emitting conversion of the composite material between blue light and green light under the condition of external high and low pressure and prepare the solid piezofluorescent color changing material with excellent performance and intercalation structure. Meanwhile, the application range of LDHs and the fluorescent brightening agent 357 in the novel intelligent material is expanded.

Description

technical field [0001] The invention belongs to the field of inorganic-organic composite intelligent materials, and in particular provides a preparation method of a piezofluorescence color-changing material with an intercalation structure. Background technique [0002] Smart materials are usually functional materials that can sense external stimuli and produce corresponding responses. Fluorescent smart materials are an important part of smart materials. Due to their characteristics of sensitive response and easy monitoring, this kind of materials has attracted extensive attention from the scientific and technological circles. In recent years, researchers have gradually developed fluorescent responsive materials that respond to external conditions such as heat, light, electricity, magnetism, and pH. Compared with the above-mentioned materials, the research on fluorescent smart materials responsive to external pressure is just in its infancy, and only a few examples of materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K9/02C09K11/06
Inventor 陆军闫东鹏卫敏段雪
Owner BEIJING UNIV OF CHEM TECH
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