Photosensitive composite film and preparation method thereof

A composite film and photosensitive technology, applied in chemical instruments and methods, color-changing fluorescent materials, etc., can solve the problems of poor ordering and low thermal stability, and achieve good product performance, high photothermal stability, and environmental friendliness. Effect

Inactive Publication Date: 2010-07-14
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The material is based on the rapid isomerization reaction of the interlayer guest AMH through the intermolecular hydrogen bond after being irradiated by ultraviolet light, thereby producing photochromic phenomenon, which overcomes the poor order degree and low thermal stability of traditional Schiff base dyes. Disadvantages, photothermal reversibility can be realized, and it is an organic-inorganic hybrid system

Method used

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  • Photosensitive composite film and preparation method thereof
  • Photosensitive composite film and preparation method thereof
  • Photosensitive composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]a. Mix 0.06mol Zn(NO3)2·6H2O and 0.03mol Al(NO3)3·9H2O, dissolve in 80ml deionized water from CO2 removal, dissolve 0.16mol NaOH in 80ml deionized water from CO2 removal, protect with N2 Slowly drop the lye into the mixed salt solution, stir vigorously, stop the drop when the pH is 6.0, transfer the slurry to an autoclave, crystallize at 100°C for 18 hours, and then wash by centrifugation to obtain the Zn2Al-NO3 hydrotalcite precursor ;

[0034] b. Take 2.5g Zn 2 Al-NO 3 Hydrotalcite precursor dispersed in 50ml deCO 2 dilute nitric acid to adjust the pH value to 5.5 after swelling in deionized water for 5 hours;

[0035] c. Dissolve 0.01g AMH and 0.24g PS in 100ml to remove CO 2 of deionized water;

[0036] d. the solution prepared in step c in N 2 Drop it into the hydrotalcite suspension prepared in step b under protection. After the dropping is completed, adjust the temperature to 40°C, react for 24 hours, centrifuge and wash 4 times, and dry in vacuum to obtain ...

Embodiment 2

[0045] a. Take 0.06mol Zn(NO 3 ) 2 ·6H 2 O, 0.03mol Al(NO 3 ) 3 9H 2 O mixed, dissolved in 80ml deCO 2 Dissolve 0.16mol NaOH in 80ml of deionized water 2 in deionized water, N 2 Slowly drop the lye into the mixed salt solution under protection, stir vigorously, stop the drop when the pH is 6.0, transfer the slurry to an autoclave, crystallize at 100°C for 18 hours, and then centrifuge and wash to obtain Zn 2 Al-NO 3 Hydrotalcite precursor;

[0046] b. Take 2.5g Zn 2 Al-NO 3 Hydrotalcite precursor dispersed in 50ml deCO 2 dilute nitric acid to adjust the pH value to 5.5 after swelling in deionized water for 5 hours;

[0047] c. Dissolve 0.05g AMH and 0.43g PS in 100ml to remove CO 2 of deionized water;

[0048] d. the solution prepared in step c in N 2 Drop it into the hydrotalcite suspension prepared in step b under protection. After the dropping is completed, adjust the temperature to 40°C, react for 24 hours, centrifuge and wash 4 times, and dry in vacuum to o...

Embodiment 3

[0053] a. Take 0.06mol Zn(NO 3 ) 2 ·6H 2 O, 0.03mol Al(NO 3 ) 3 9H 2 O mixed, dissolved in 80ml deCO 2 Dissolve 0.16mol NaOH in 80ml of deionized water 2 in deionized water, N 2 Slowly drop the lye into the mixed salt solution under protection, stir vigorously, stop the drop when the pH is 6.0, transfer the slurry to an autoclave, crystallize at 100°C for 18 hours, and then centrifuge and wash to obtain Zn 2 Al-NO 3 Hydrotalcite precursor;

[0054] b. Take 2.5g Zn 2 Al-NO 3 Hydrotalcite precursor dispersed in 50ml deCO 2 dilute nitric acid to adjust the pH value to 5.5 after swelling in deionized water for 8 hours;

[0055] c. Dissolve 0.005g AMH and 0.47g PS in 100ml to remove CO 2 of deionized water;

[0056] d. the solution prepared in step c in N 2 Drop it into the hydrotalcite suspension prepared in step b under protection. After the dropping is completed, adjust the temperature to 40°C, react for 24 hours, centrifuge and wash 4 times, and dry in vacuum to ...

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Abstract

The invention discloses a photosensitive composite film and a preparation method thereof, which belong to the technical field of the preparation of the optical function composite material. The technical scheme of the invention is that firstly a hydrotalcite precursor is prepared, then an ion exchange method is adopted to prepare a hydrotalcite composite material co-intercalated with a Schiff-base dye and a surface active agent, and a solvent evaporation method is utilized to assemble the hydrotalcite composite material into a photosensitive film material. The composite film material utilizes the interaction between the subject and the object. The synergistic effect of interlayer water and the surface active agent makes the composite film material have photosensitive property of ultrafast response. The photosensitive composite film has wide application background. Compared with the traditional photochromic materials, the photosensitive composite film has the advantages of simple and easy preparation, friendly environment, high stability for the optothermal and long storage time. The method has simple process and good product performance, and is suitable for the industrial production.

Description

technical field [0001] The invention belongs to the technical field of preparation of optical functional composite materials, and in particular relates to an ultrafast response photochromic composite film material and a preparation method thereof. Background technique [0002] Photochromism refers to that when a compound (A) is irradiated by light of a certain wavelength, it can undergo a specific chemical reaction to obtain a product (B). Due to the change of structure, its absorption spectrum changes significantly, while Under the action of another wavelength of light or heat, it can return to its original form. Photochromic materials change color under light, and their potential applications are extremely wide, such as information storage, electronic display, optical switching equipment, color-changing glasses, etc. The photochromic compounds that have been studied more deeply include: diarylethenes, fulgilic acid ligands, spiropyrans, spirooxazines and benzopyrans, etc....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K9/02
Inventor 卫敏王心蕊陆军段雪
Owner BEIJING UNIV OF CHEM TECH
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