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A kind of diarylethene photochromic conjugated polymer and preparation method thereof

A technology of diarylethene and conjugated polymers, which is applied in the field of polymers, can solve the problems of slow photochromic rate, etc., and achieve the effects of fast photochromic rate, good anti-fatigue performance, and sensitive photoresponse

Active Publication Date: 2021-06-15
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, most of the photochromic polymer systems of diarylethene are liquid, and there are few solid systems, and the existing solid polymers have the disadvantages of slow photochromic rate, so the photochromic polymerization of solid-state ultrafast color change is synthesized. Objects are of great significance, they can be used in the manufacture of optical devices, and have potential applications in optical storage and memory

Method used

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  • A kind of diarylethene photochromic conjugated polymer and preparation method thereof
  • A kind of diarylethene photochromic conjugated polymer and preparation method thereof
  • A kind of diarylethene photochromic conjugated polymer and preparation method thereof

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Embodiment 2

[0023] The preparation method of the diarylethene photochromic conjugated polymer in this embodiment is as follows:

[0024] Take 0.1mmol 1,2-bis(5-formyl-2-methylthiophen-3-yl)perfluorocyclopentene and 0.05mmol tetrakis(p-aminophenyl)methane, add to 0.75mL o-dichlorobenzene and In 2.25mL of n-butanol solution, ultrasonically disperse evenly for ten minutes, add 0.3mL of 3M acetic acid, react in a high-temperature reactor at 120°C for 5 days, wash and dry after natural cooling, and collect the photochromic polymer.

[0025] figure 1 It is the synthetic structure diagram of the diarylethene photochromic conjugated polymer obtained in step 1 of this embodiment, figure 2 is the infrared spectrum of the diarylethene photochromic conjugated polymer, image 3 A scanning electron microscope image.

[0026] Solid UV and cycle experiments

[0027] After being irradiated with 365nm ultraviolet light for different times, the ultraviolet spectrum of the diarylethene photochromic conj...

Embodiment 2

[0029] The preparation method of the diarylethene photochromic conjugated polymer in this embodiment is as follows:

[0030] Take 0.1mmol 1,2-bis(5-formyl-2-methylthiophen-3-yl) perfluorocyclopentene and 0.05mmol 4,4',4", 4"'-(pyrene-1,3 ,6,8-Tetrayl)tetraphenylamine, added to 0.75mL o-dichlorobenzene and 2.25mL ethanol solution, dispersed evenly by ultrasonication for ten minutes, then added 0.05g p-toluenesulfonic acid, and reacted in a high-temperature reaction kettle at 150°C After 3 days, after natural cooling, washing and drying, the photochromic polymer was collected.

[0031] Solid UV and cycle experiments

[0032] After being irradiated with 365nm ultraviolet light for different times, the ultraviolet spectrum of the diarylethene photochromic conjugated polymer at 200nm-900nm is measured. The cycle experiment is to measure the absorbance value of the polymer at 650 nm under the alternating irradiation of ultraviolet light and visible light. The ultraviolet spectrog...

Embodiment 3

[0034] The preparation method of the diarylethene photochromic conjugated polymer in this embodiment is as follows:

[0035]Take 0.1mmol 1,2-bis(5-formyl-2-methylthiophen-3-yl)perfluorocyclopentene and 0.05mmol 4,4',4",4"'-(ethylene-1,1 ,2,2-tetrayl)tetramine, added to 1.5mL of m-trimethylbenzene and 1.5mL of 1,4-dioxane solution, dispersed evenly by ultrasonication for 10 minutes, then added 0.3mL of 6M acetic acid, and reacted at 150°C React in the kettle for 5 days, wash and dry after natural cooling, and collect the photochromic polymer.

[0036] Solid UV and cycle experiments

[0037] After being irradiated with 365nm ultraviolet light for different times, the ultraviolet spectrum of the diarylethene photochromic conjugated polymer at 200nm-900nm is measured. The cycle experiment is to measure the absorbance value of the polymer at 650 nm under the alternating irradiation of ultraviolet light and visible light. The ultraviolet spectrogram shows that the color of the po...

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Abstract

The invention discloses a preparation method of a diarylethene photochromic conjugated polymer. The polymer can realize reversible ultrafast photochromic reaction under ultraviolet light and visible light. By measuring the time-varying solid ultraviolet spectrum of the polymer under 365nm ultraviolet light, it is shown that the polymer can undergo photochromic reaction in a short time, and can repeat the cycle at least three times, and the photochemical loss is within 10%. The diarylethene photochromic conjugated polymer prepared by the invention has ultra-fast photochromic speed and excellent photochromic performance, and has potential application value in the fields of optical devices and optical storage.

Description

technical field [0001] The invention belongs to the field of polymers, and in particular relates to a preparation method of a diarylethene photochromic conjugated polymer. [0002] technical background [0003] The phenomenon of photochromism means that after a compound is irradiated by light of a certain wavelength, the molecule undergoes a specific chemical reaction to generate its photoisomer, and at the same time the absorption spectrum and the color of the substance change significantly; while light of another wavelength Under the action of irradiation or heat, a reversible reaction can occur and return to the original form. This kind of material that can undergo a reversible reaction under the action of light and is accompanied by a color change is called a photochromic material. As a readily available clean energy, light provides a broad prospect for the construction and application of photochromic materials with its fast response and renewable characteristics. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D333/22C09K9/02
CPCC07D333/22C09K9/02C09K2211/1007C09K2211/1092
Inventor 顾志国符秋婷晏晓东何悦张新悦张文达刘勇
Owner JIANGNAN UNIV
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