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Ultraviolet-assisted surface modification method and product with surface formed thereby

A UV light modification technology, applied to the surface of materials, UV assisted polymer surface modification field, can solve side reactions, reduce surface modification efficiency, unfavorable rapid production and cost saving, quinone group photosensitivity Weakness and other issues

Inactive Publication Date: 2012-10-03
BEIJING WANHEXINYUAN BIOTECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shortcoming of this method is: the activity of the nitrate free radical that azidophenyl group generates under ultraviolet light irradiation is too strong, and it easily produces side reaction thereby reduces the efficiency of surface modification; In addition, the reactivity of described species is extremely high. High and reacts late course or immediately with most compounds, organic solvents and water
The disadvantage of this method is that the photosensitivity of the quinone group is relatively weak, resulting in relatively long UV irradiation time, which is not conducive to rapid production and cost saving

Method used

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  • Ultraviolet-assisted surface modification method and product with surface formed thereby
  • Ultraviolet-assisted surface modification method and product with surface formed thereby
  • Ultraviolet-assisted surface modification method and product with surface formed thereby

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] Synthesis of molecule X-S-L

[0112] Synthesis of N-[3-(xanthone-2-carboxamido)propyl]-carbamic acid tert-butyl ester (Compound 1)

[0113]

[0114] Dissolve 2-XTC (13.2g, 55mmol) in DMF (120ml) and stir to dissolve in a water bath at 40°C. CDI (9.25g, 57mmol) was added to the solution at once, and the reaction was stirred for 4 hours and 40 minutes. The reaction system was transferred out and stirred in a water bath at 20°C for 10 minutes to cool. Dissolve monosubstituted tert-butoxycarbonyl-1,3-propanediamine (11.09g, 67mmol) in TEA / DMF (20ml, 10%v / v) solution, mix well, and add to xanthone at one time- In the reaction system of 2-formic acid and CDI, TEA (13ml) was then added, stirred and heated to 40°C, and reacted for 11 hours. The reaction system was cooled to 0°C, deionized water (700ml) was added for precipitation, suction filtration, and the obtained solid was dried at 40°C under vacuum conditions of about -0.09MPa. The yield was 41.47% (based on 2-XTC).

[0115]...

Embodiment 2

[0174] Dissolve compound 2, compound 4, compound 6, and compound 7 in pure water (conductivity = 0.8 μs / cm) to prepare a 0.05 mM solution. Dissolve 2-XTC and BP in absolute ethanol to prepare solutions with concentrations of 0.064mM and 0.053mM, respectively. Measure the ultraviolet spectrum in the wavelength range of 190-400nm. Table 1 shows the characteristic absorption wavelength of the six compounds (λ max ) And molar absorption coefficient (ε).

[0175] Table 1 UV absorption of six compounds

[0176]

Embodiment 3

[0178] Compound 6 was dissolved in distilled water to prepare a solution with an initial concentration of 0.58 mM. Based on the above concentration, a 5-fold dilution was made to prepare a series of modified solutions. Before use, the solution of each concentration is ventilated with nitrogen for 10 minutes to remove oxygen. Take the unmodified polystyrene (PS) 96-well microtiter plate, wash the surface of the well with absolute ethanol and deionized water three times, bake at 50°C for 45 minutes, and dry for use. The modified solution prepared above was added to each well of the microtiter plate at 100μL / well, and the microtiter plate was placed under a 1000W high-pressure mercury lamp for illumination with a light intensity of 3.55mW / cm 2 (Λ=254nm), the illumination time is 5 minutes, 7 minutes and 10 minutes respectively. After the light is over, pour off the modified solution, rinse with deionized water three times, and then bake at 50°C for 45 minutes. After drying, store ...

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Abstract

The invention relates to a polymer surface modification method by ultraviolet irradiation. The polymer surface modification method by ultraviolet irradiation includes allowing a photosensitive group X to chemically react under ultraviolet irradiation so as to introduce a functional group L into the surface of polymer material P, wherein the photosensitive group X contains at least one xanthone unit.

Description

Technical field [0001] The present invention relates to a surface modification method, in particular an ultraviolet light-assisted polymer surface modification method, and a modified molecule used in an ultraviolet light-assisted material surface modification method and a material surface modified by this method Products. Background technique [0002] Materials with special surface properties are widely used in printing, dyeing, bonding, barrier and biological fields. For example, PET film with good surface hydrophilicity has good coloring properties, and can print packaging materials with a variety of colors and patterns; polymer materials with good surface biological properties can be widely used in biosensors, medical biological materials, and biological materials. Rapid detection and other fields. [0003] Surface modification can usually be used to obtain materials with different surface properties. The method includes wet chemical method, chemical etching, corona method, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/12C08J7/06C08L101/00C07D311/86C07H15/12C07H1/00C07J41/00
Inventor 杨万泰黄振华童彦和邵磊
Owner BEIJING WANHEXINYUAN BIOTECH
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