METHOD FOR PRODUCTION OF COMPOSITE OPTICAL CHEMOSENSOR FILMS

摘要

FIELD: nanotechnologies. ^ SUBSTANCE: invention relates to nanotechnologies, in particular to production of optical structured chemosensor films on the basis of photon-crystalline opalescent matrix, which may find application in express analysis of hazardous admixtures. Finished film-matrix with size of monodisperse spherical silica particles (MSSP) from 190 to 250 nm applied onto substrate, spherical silica particles with size of up to 8 nm are once submerged vertically in water-ethanol nanosol, modified with luminescent dye. After impregnation with sol the film is dried at the temperature of 20-25C for 15-20 min. Invention provides for production of chemosensor, in which sensor is represented by nanofilms of mesoporous silica with luminescent dye on surface. Open nature of pores assists in quick penetration of analysed medium inside film. ^ EFFECT: produced material has high strength. ^ 3 cl, 2 dwg