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Inorganic/organic hybrid photochromic material, preparation method and application

A photochromic material and organic hybrid technology, applied in the direction of color-changing fluorescent materials, chemical instruments and methods, etc., can solve the problems of low fatigue resistance, slow discoloration and decolorization of inorganic photochromic materials, and poor oxidation resistance.

Active Publication Date: 2013-03-13
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Photochromic materials are mainly divided into two categories: organic compounds and inorganic compounds. Among them, organic photochromic materials are more researched and widely used, such as diarylethene, fulginic anhydride, spiropyran, spirorazine, azo The advantages of this type of color-changing materials are: fast color change and disappearance, but poor thermal stability and oxidation resistance, and low fatigue resistance
There are relatively few studies on inorganic photochromic materials, mainly including various variable-valence metal oxides, metal halides, and metal salt hydrates doped with impurities. It overcomes the poor thermal stability and oxygen resistance of organic photochromic materials, and fatigue resistance. The disadvantage of low stability, but the color change and fade of inorganic photochromic materials are slow

Method used

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  • Inorganic/organic hybrid photochromic material, preparation method and application
  • Inorganic/organic hybrid photochromic material, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1. (C 24 h 22 N 2 ) 5 [Bi 3 Cl 14 ] 2 ·(C 14 h 14 O) Synthesis of compound:

[0017] The compound is obtained by in-situ solvothermal synthesis, and its specific operation steps are:

[0018] 200 mg BiCl 3 , 60 mg 4,4'-bipy and 1 mL of hydrochloric acid were put into a 25 mL polytetrafluoroethylene liner, and then 9 mL of benzyl alcohol was added, and then the entire polytetrafluoroethylene liner was placed in a stainless steel hydrothermal jar, heat to 140 after tightening o C, and kept at this temperature for three days, and then 1 o C / h speed reduced to 70 o C, and keep it for 6 hours and then use 1 o The rate of C / h is reduced to room temperature. The title compound can be obtained as a pale yellow block.

[0019] The compound is a monoclinic crystal system with a space group of P 2 / c, the unit cell parameter is: a = 24.430(5), b = 12.770(2), c = 23.873(5) ?, α = 90, β =101.738(4), gamma = 90 o , V = 7292(2) ? 3 , Z = 4. ...

Embodiment 2

[0020] Embodiment 2. (C 24 h 22 N 2 ) 5 [Bi 3 Cl 14 ] 2 ·(C 14 h 14 O) Synthesis of compound:

[0021] The compound is obtained by in-situ solvothermal synthesis, and its specific operation steps are:

[0022] 200 mg BiCl 3 , 60 mg 4,4'-bipy and 1 mL of hydrochloric acid were put into a 25 mL polytetrafluoroethylene liner, and then 9 mL of benzyl alcohol was added, and then the entire polytetrafluoroethylene liner was placed in a stainless steel hydrothermal jar, screw tight and heat to 130 o C, and kept at this temperature for three days, and then 1 o C / h speed reduced to 70 o C, and keep it for 6 hours and then use 1 o The rate of C / h is reduced to room temperature. The title compound can be obtained as a pale yellow block.

Embodiment 3

[0023] Embodiment 3. (C 24 h 22 N 2 ) 5 [Bi 3 Cl 14 ] 2 ·(C 14 h 14 O) Synthesis of compound:

[0024] The compound is obtained by in-situ solvothermal synthesis, and its specific operation steps are:

[0025] 200 mg BiCl 3 , 30 mg of 4,4'-bipy and 1 mL of hydrochloric acid were put into a 25 mL polytetrafluoroethylene liner, and then 9 mL of benzyl alcohol was added, and then the entire polytetrafluoroethylene liner was placed in a stainless steel hydrothermal In a jar, heat to 120 after tightening o C, and kept at this temperature for three days, and then 1 o C / h speed reduced to 70 o C, and keep it for 6 hours and then use 1 o The rate of C / h is reduced to room temperature. The title compound can be obtained as a pale yellow block.

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Abstract

The invention relates to an inorganic / organic hybrid photochromic material, a preparation method and an application, which belongs to the inorganic / organic hybrid photochromic material field, and relates to a synthetic method and an application of a benzyl viologen bismuth chloride inorganic / organic hybrid photochromic compound. The benzyl viologen bismuth chloride inorganic / organic hybrid photochromic compound has excellent photochromism performance, is fast to change color under the irradiation of UV and visible light, and also fast to fade while being heated and placed in a darkroom, the material can be used in the fields of light information storage, protection decoration, fake resistance and authentic identification, secrecy, optical switch device, light information converter, photochromic sunglass lens used for radiation protection, diaphragm material and the like.

Description

technical field [0001] The invention relates to an inorganic / organic hybrid photochromic material, a preparation method and application thereof. Background technique [0002] Photochromism refers to a specific chemical reaction of a compound when it is irradiated by light of a certain wavelength. A reversible change that can return to its original structural form under the action of heat or heat. [0003] In recent years, the use of photochromic materials in optical information storage, optical regulation, optical switches, optical device materials, optical information genetic materials, modified gene chip materials and other fields has attracted widespread attention worldwide. At the same time, it has important application prospects in the fields of optical imaging, textile fibers, inks, anti-counterfeiting signs and decorations, and even military high-tech camouflage. Therefore, the research on photochromic materials is one of the frontier topics in the field of scientifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K9/00
Inventor 林榕光郭国聪王明盛杨琛蔡丽珍王观娥
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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