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Method for preparing reversible colorimetric oxygen sensing cloth label

A sensor cloth and label technology, which is applied in the field of colorimetric sensors, can solve the problems of light color and color difference of the sensor, and achieve the effect of uniform color distribution, uniform size and improved accuracy

Inactive Publication Date: 2013-11-13
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the colorimetric oxygen sensor prepared by them has some defects: special excitation light source and corresponding filter are required, the color displayed by the sensor is relatively light, and the obvious color difference caused by unevenly distributed dyes in the two-color system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 5.7mg octaethylporphyrin platinum, 7.64mg 2-(4,4-distyryl) bisbenzoxazole and 50.9mg 2,2-azobisisobutyronitrile, weigh the octaethyl porphyrin Platinum porphyrin, 2,2-(4,4-distyryl)bisbenzoxazole and 2,2-azobisisobutyronitrile were placed in a 10 mL glass bottle. Add 7 mL of styrene and 52 μL of methacrylic acid to dissolve, and mix well to obtain solution A.

[0019] Weigh 0.177g of polyvinylpyrrolidone K-30 into a 50mL glass bottle, add 25mL of ethanol to dissolve, and mix well to obtain solution B.

[0020] Add solution A to solution B and mix. Add a magnetic rotor to a 50mL glass bottle for stirring, place it on a magnetic stirrer, and install a thermometer. After deoxygenating the mixture with nitrogen for 30 minutes, react in an oil bath at 70°C in the dark for 20 hours. After cooling to room temperature, the product was transferred to a 50 mL centrifuge tube, centrifuged at 3000 rpm for 5 min, and washed three times with ethanol. Finally, the oxygen-sens...

Embodiment 2

[0023] Weigh 8mg octaethylporphyrin platinum, 14mg 2-(4,4-distyryl) bisbenzoxazole and 65mg 2,2-azobisisobutyronitrile, weigh octaethylporphyrin Platinum, 2,2-(4,4-distyryl)bisbenzoxazole and 2,2-azobisisobutyronitrile were placed in a 10 mL glass bottle. Add 7 mL of styrene and 60 μL of methacrylic acid to dissolve, and mix well to obtain solution A.

[0024] Weigh 0.25g of polyvinylpyrrolidone K-30 into a 50mL glass bottle, add 25mL of ethanol to dissolve, and mix well to obtain solution B.

[0025] Add solution A to solution B and mix. Add a magnetic rotor to a 50mL glass bottle to stir, place it on a magnetic stirrer, and install a thermometer. After the mixture is deoxygenated with nitrogen for 30 minutes, it is reacted in an oil bath at 80°C in the dark for 24 hours. After cooling to room temperature, the product was transferred to a 50 mL centrifuge tube, centrifuged at 3000 rpm for 5 min, and washed three times with ethanol. Finally, the oxygen-sensitive polystyrene...

Embodiment 3

[0028] Take by weighing 10mg octaethylporphyrin platinum, 25mg 2-(4,4-distyryl) bisbenzoxazole and 95mg 2,2-azobisisobutyronitrile, weigh octaethylporphyrin Platinum, 2,2-(4,4-distyryl)bisbenzoxazole and 2,2-azobisisobutyronitrile were placed in a 10 mL glass bottle. Add 7 mL of styrene and 76 μL of methacrylic acid to dissolve, and mix well to obtain solution A.

[0029] Weigh 0.395g of polyvinylpyrrolidone K-30 into a 50mL glass bottle, add 25mL of ethanol to dissolve, and mix well to obtain solution B.

[0030] Add solution A to solution B and mix. Add a magnetic rotor to a 50mL glass bottle to stir, place it on a magnetic stirrer, and install a thermometer. After deoxygenating the mixture with nitrogen for 30 minutes, react in an oil bath at 90°C in the dark for 28 hours. After cooling to room temperature, the product was transferred to a 50 mL centrifuge tube, centrifuged at 3000 rpm for 5 min, and washed three times with ethanol. Finally, the oxygen-sensitive polystyr...

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Abstract

The invention provides a method for preparing a reversible colorimetric oxygen sensing cloth label, relating to a colorimetric sensor is related, and providing a colorimetric oxygen sensing cloth label which has the characteristics of high brightness, good flexibility and simple structure and is capable of realizing visual fast measurement of oxygen concentration, and a preparation method thereof. The colorimetric oxygen sensing cloth label comprises two fluorescent dyes, a polystyrene micrballon and a cloth, wherein the two fluorescent dyes are wrapped in the polystyrene micrballon; one of the fluorescent dyes is sensitive to oxygen; and the polystyrene micrballon is fixed on the cloth. The preparation method comprises the following steps: preparing the polystyrene micrballon containing the two fluorescent dyes; and fixing the polystyrene micrballon on the cloth, so as to obtain the reversible colorimetric oxygen sensing cloth label. When being used, the colorimetric oxygen sensing cloth label prepared in the invention is only irradiated by one handhold ultraviolet light-emitting diode, and the colorimetric oxygen sensing cloth label emits quite bright colour lights; the blue fluorescent dye and the red fluorescent dye sensitive to the oxygen both can be excited by ultraviolet; the visual direct detection can be realized; and optical devices such as an optical filter and the like are not needed.

Description

technical field [0001] The invention relates to a colorimetric sensor, in particular to a reversible colorimetric oxygen sensor cloth label and a preparation method thereof. Background technique [0002] Oxygen is an important gas to maintain life on earth, and the detection of oxygen concentration has been extensively studied. In the past, most oxygen sensors were based on electrochemistry, pressure, photochemistry, etc. to achieve quantitative oxygen content measurement, and have been widely used in medicine, chemical industry, food packaging, environmental science, life science and other fields. However, most of these existing oxygen sensors need the assistance of scientific instruments, and the cumbersome and complicated optical and data analysis systems also limit their wide application in daily life. The visual oxygen sensor based on the two-color system has a simple and visual detection method and has attracted people's attention in recent years. Chen Xi et al. (Wan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64C08F212/08C08F2/44D06M15/233D06M13/352D06M101/06
Inventor 陈曦王旭东何春燕
Owner XIAMEN UNIV
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