Method for preparing visual photonic crystal sensor

Abstract

The invention discloses a method for rapidly detecting glucose, and belongs to the technical field of detection. The method comprises the following steps: preparing monodisperse nano microspheres with phenylboronic acid group identification elements by utilizing a suspension polymerization method, preparing the nano microspheres into a photonic crystal by utilizing a vertical settlement self-assembly method, and binding the phenylboronic acid group identification elements on the photonic crystal with the testing factor glucose, so as to enable lattice parameters of the photonic crystal to be changed, and finally the structure and the color to be changed, so that a rapid visual photonic crystal sensor detection method for detecting the glucose on site is constructed. The method has the advantages of high sensitivity, fast response, intuitiveness and visibility. The photonic crystal nano microspheres with the identification elements are prepared by utilizing the suspension polymerization method, and the photonic crystal is prepared by utilizing the vertical settlement self-assembly method, so that the detection cost is obviously reduced, the preparation method is simple and easy, and the storage performance, stability and visibility of a sensor have huge potentials in the glucose detection and application in the food industry and medicine industry.

Description

Technical field [0001] The invention relates to a method for preparing a photonic crystal sensor based on a chemical reaction, in particular to a photonic crystal detection technology based on a boronic acid group to recognize sugars such as glucose. Background technique [0002] Glucose (chemical formula C6H12O6), also known as corn dextrose, maize sugar, or even glucose for short, is the most widely distributed and most important monosaccharide in nature. It is a polyhydroxy aldehyde. Pure glucose is colorless crystals with sweet taste but not as sweet as sucrose. It is easily soluble in water, slightly soluble in ethanol, and insoluble in ether. The aqueous solution rotates to the right, so it is also called "dextrose". Glucose has an important position in the field of biology. It is the energy source and metabolic intermediate product of living cells, that is, the main energy supply material of organisms. The heat released by its oxidation reaction is an important source of...

AI Technical Summary

Problems solved by technology

Among these methods, high-performance liquid chromatography, gas chromatography, and high-efficiency anion-exchange chromatography-pulse amperometric detection have high sensitivity, but the equipment is expensive, the detection cost is high, and the sample processing method is complicated, which is not conducive to rapid and effective detection; The photometric method needs to add a chromogenic reagent, and the sensitivity and accuracy are not good; in view of the complexity of the glucose structure, the optical rotation method is only suitable as an auxiliary detection method; the biosensor method has the advantages of wide linear detection range and high sensitivity, and Low cost and good application prospects

Images