Method for preparing reversible colorimetric oxygen sensing cloth label

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...