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A tetrastyrylcarboline antibacterial ultraviolet absorber and its preparation method

A technology of tetraphenylethylene and ultraviolet rays, which is applied in the direction of antibacterial drugs, disinfectants, chemicals for biological control, etc., can solve the problems of few varieties and cannot meet the application requirements, and achieve good film-forming properties and good ultraviolet absorption performance, the effect of reducing coplanarity

Active Publication Date: 2020-09-22
INST OF ANALYSIS GUANGDONG ACAD OF SCI (CHINA NAT ANALYTICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although ultraviolet absorbers have been paid great attention by researchers and extensive research has been carried out, there are still few varieties and many shortcomings, which cannot meet the application requirements of related fields, and further development and research are urgently needed

Method used

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  • A tetrastyrylcarboline antibacterial ultraviolet absorber and its preparation method
  • A tetrastyrylcarboline antibacterial ultraviolet absorber and its preparation method
  • A tetrastyrylcarboline antibacterial ultraviolet absorber and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Preparation of Tetrastyrylcarboline Antibacterial Ultraviolet Absorber

[0023] In a dry 250 ml round bottom flask, β-carboline-3-carboxhydrazide (0.010 mol) and 4-(1,2,2-triphenylvinyl)benzaldehyde (0.010 mol) were dissolved in 100 Add 0.5 ml of glacial acetic acid dropwise to 1 ml of absolute ethanol under rapid stirring, continue to stir and reflux for 3 hours, cool to room temperature after the reaction is complete, filter the obtained solid under reduced pressure, recrystallize from ethanol-acetone, and dry in vacuo to obtain white Powdered tetrastyrylcarboline ultraviolet absorber with a yield of 81%.

[0024] 1 H NMR (500MHz, DMSO / TMS) δ: 6.98-7.20(m, 17H), 7.33(t, J=8.0Hz, 1H), 7.50(d, J=8.5Hz, 2H), 7.62(t, J= 8.0Hz,1H),7.69(d,J=8.5Hz,1H),8.46(d,J=8.0Hz,1H),8.57(s,1H),8.96(s,1H),8.98(d,J= 2.5Hz, 1H), 12.04(s, 1H), 12.07(s, 1H). 13 C NMR(125MHz,DMSO / TMS)δ:117.49,120.22,125.33,126.09,127.58,131.71,131.83,131.89,131.95,133.00,133.09,133.47,133.95,135.80,135.85,...

Embodiment 2

[0026] Preparation of Tetrastyrylcarboline Antibacterial Ultraviolet Absorber

[0027] In a dry 250 ml round bottom flask, β-carboline-3-carboxhydrazide (0.010mol) and 4-(1,2,2-triphenylethenyl)benzaldehyde (0.011mol) were dissolved in 100 Add 0.5 ml of glacial acetic acid dropwise to 1 ml of anhydrous methanol under rapid stirring, continue to stir and reflux for 5 hours, cool to room temperature after the reaction is complete, filter the obtained solid under reduced pressure, recrystallize through ethanol-acetone, and dry in vacuo to obtain white Powdered tetrastyrylcarboline ultraviolet absorber with a yield of 78%.

Embodiment 3

[0029] Absorption Performance Test of Tetrastyrylcarboline Antibacterial Ultraviolet Absorber

[0030] It is 2.04 * 10 that the tetrastyrylcarboline antibacterial ultraviolet absorber provided by the present invention is formulated into concentration -5 The tetrahydrofuran solution of M, with 1 centimeter sample cell, measure ultraviolet absorption and transmittance performance on HORIBA Jobin Yvon Aqualog absorption and three-dimensional fluorescence scanning spectrometer, the result is as follows figure 1 and figure 2 shown.

[0031] Depend on figure 1 It can be seen that the tetrastyrylcarboline antibacterial ultraviolet absorber has a broadband strong absorption characteristic in the 275nm-420nm band, showing a strong absorption band, and has two absorption peaks, respectively located at 288nm and 348nm, the absorption of the maximum absorption peak The wavelength is 348nm, and there is no obvious absorption in the band above 420nm, and its molar absorptivity is 61466M...

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Abstract

The invention discloses a tetrastyrylcarboline antibacterial ultraviolet absorbent with a structure represented by a formula I shown in the description, a preparation method therefor and an application of the tetrastyrylcarboline antibacterial ultraviolet absorbent. The tetrastyrylcarboline antibacterial ultraviolet absorbent has very good ultraviolet absorption characteristic, is wide in absorption range and good in transparency, has an antibacterial function, is a novel ultraviolet absorbent with excellent properties and can be applied to the technical fields of plastics, coating materials,printing ink, display, eyeglasses, chemicals for daily use, textiles and the like as an ultraviolet absorbent.

Description

Technical field: [0001] The invention relates to a tetrastyrylcarboline antibacterial ultraviolet absorber and a preparation method thereof. Background technique: [0002] As a common light stabilizer, ultraviolet absorbers can selectively absorb ultraviolet rays from sunlight and other light sources, and then release or consume them in the form of low-energy radiation, so as to effectively protect the human body and materials and delay the aging of materials , The purpose of improving the application performance of materials, so it has great practical value in industrial production, and has been widely used in plastics, rubber, photosensitive materials, coatings, inks, daily chemical products, textiles and other fields. [0003] Although ultraviolet absorbers have been paid great attention by researchers and extensive research has been carried out, there are still few varieties and many shortcomings, which cannot meet the application requirements of related fields, and furt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D471/04A61P31/04A01P1/00
CPCA61P31/04C07D471/04
Inventor 孙一峰陈中慧魏俊锋刘鹏杰刘海峰
Owner INST OF ANALYSIS GUANGDONG ACAD OF SCI (CHINA NAT ANALYTICAL
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