FIELD: chemistry.
SUBSTANCE: invention relates to a method of obtaining structured chemosensory films based on silica nanoparticles, modified with organic solvents, which involves obtaining a sol of spherical silica particles, modification of the obtained sol with an organic dye, deposition of the modified sol on a substrate. The method is distinguished by that, the organic dye used is fluorescein, which is added at temperature 60-80°C into a matured sol of spherical silica particles in a water-ethanol mixture at pH 1.5-2 in ratio fluorescein/sol not more than 1/100. A cetyltrimethylammonium chloride surfactant is added to the obtained coloured sol in ratio surfactant/sol = 0.3-0.8.
EFFECT: obtained film is a NH+ sensor.
3 cl, 2 dwg, 1 ex
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