Poly-R-indole blue light absorbent and preparation method and application thereof

An indole blue light and absorber technology, applied in the directions of organic chemistry, coating, etc., can solve the problems of difficult synthesis, expensive raw materials, insufficient light transmittance, etc., and achieves the effects of wide source of raw materials, simple synthesis method and low cost.

Active Publication Date: 2020-09-04
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the raw materials are expensive, the structure of the absorbent is complicated, and the synthesis is difficult.
[0010] It can be seen that the pro

Method used

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  • Poly-R-indole blue light absorbent and preparation method and application thereof
  • Poly-R-indole blue light absorbent and preparation method and application thereof

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preparation example Construction

[0041] It also provides a preparation method of poly R-indole blue light absorber, and obtains poly R-indole blue light absorber from indole monomer through free radical oxidation method;

[0042] The indole monomer has a structure represented by the following general formula, also known as R-indole:

[0043]

[0044] Among them, R represents the substituent connected to the benzene ring, and the substituent connected to a benzene ring is one or two, and R is selected from -CH 3 、-C 2 h 5 、-C(CH 3 ) 3 , -CN, -F, -Cl, -Br, -I, -COOH, -OH, -CH 2 OH, -C 2 h 5 OH, -CH 2 COOH, -NH 2 , -CHO, -NO 2 、-COOCH 3 、-COOC 2 h 5 、-B(OH) 2 、-COCH 3 、-CH 2 COOCH 3 、-CH 2 COOC 2 h 5 , -OOCCH 3 , -OOCC 2 h 5 、-OCH 3 、-OC 2 h 5 、-CF 3 , -0C 6 h 5 or -OCH 2 C 6 h 5 ;

[0045] The free radical oxidation method is selected from oxidant oxidation method or ultraviolet oxidation method;

[0046] The steps of the oxidant oxidation method include: mixing indole monome...

Embodiment 1

[0056] 1 part of methyl indole 7-formate, 3 parts of anhydrous ferric chloride, and 100 parts of chloroform were mixed uniformly in the reactor, stirred and reacted at room temperature for 48 hours, after filtering out impurities, the solvent was evaporated to obtain the crude product poly-7-formic acid Methyl indole, and then purified by acetone / water dissolution precipitation to obtain polymethyl indole 7-formate.

[0057] Indole 7-methylformate and polymethylindole 7-formate were prepared into ethanol solutions with a concentration of 50ppm respectively, and carried out UV-visible light spectrum analysis, the results are shown in the attached figure 1 .

[0058] Add polymethyl 7-carboxylate indole to the resin monomer of eyeglasses, the addition amount is 0.1wt%, and then solidify into a 1mm thick sheet, test its absorption effect on mobile phone screen light, record blue light, yellow light and red light The proportion of light absorbed.

Embodiment 2

[0060] 1 part of 5-cyanylindole and 2 parts of sodium persulfate were mixed uniformly in a mortar, placed at 50°C for 24 hours, and then purified by acetone / water dissolution precipitation method to obtain poly-5-cyanylindole.

[0061] Add polymethyl-5-formate indole to the resin monomer of the eyeglass lens, the addition amount is 0.1wt%, and then solidify into a 1mm thick sheet, and test its absorption effect on the light of the mobile phone screen (attached figure 2 ), record the absorption ratio of blue light, yellow light and red light.

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Abstract

The invention relates to a poly R-indole blue light absorbent and a preparation method and application thereof. The poly-R-indole blue light absorber is a mixture of a series of oligomers obtained from R-indole through a free radical oxidation method. The poly (R-indole) blue light absorbent has relatively strong absorption capability on ultraviolet light and short-wave blue light wave bands of 400-480nm, and has extremely high transmission capability on visible light of 500nm or above. In addition, the absorbent has good solubility in a non-polar solvent and a resin monomer, and is suitable for being applied to resin spectacle lenses, polymer material films and coatings.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a poly R-indole blue light absorber and its preparation method and application. Background technique [0002] With the development of communication technology, the usage rate of mobile phones, computers, televisions and other electronic products is getting higher and higher. However, the high-energy blue light projected from the screens of these electronic products is harmful to human health. According to current research, the blue light emitted by these electronic products has high energy, and can pass through the lens, reach the retina, destroy photosensitive cells, and cause vision damage. Secondly, blue light can inhibit the secretion of melatonin, causing people to insomnia, anxiety and other symptoms. Furthermore, high-energy blue light can easily cause people's blurred vision and visual fatigue, and may even induce macular degeneration, cataract and oth...

Claims

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Application Information

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IPC IPC(8): C07D487/14C09D7/48C08K5/3417
CPCC07D487/14C09D7/48C08K5/3417
Inventor 许祥舒悦管涌郑安呐龚毅超刘海
Owner EAST CHINA UNIV OF SCI & TECH
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