SENSITIVE ELEMENT OF LUMINESCENT SENSOR AND METHOD FOR ITS PRODUCTION Russian patent published in 2021 - IPC G01N21/64 B82Y15/00 B82Y30/00 G01N33/15 C09K11/54 C09K11/56 C09K11/88 

FIELD: analytical chemistry.

SUBSTANCE: invention can be used in analytical chemistry for the optical detection of substances in gas and liquid media. A sensitive element of a luminescent sensor consists of an inorganic porous matrix, which is modified aerosil of A-175 grade. Aerosil is modified with compounds selected from R_nSiX_4-n series, where R is an organic radical selected from methyl or ethyl, X is halogen, n is equal to 2. The specified compounds contain as an additive a mixture of pyridine and hexamethylamine taken in a mass ratio of 1:2. The sensitive element contains colloidal semiconductor phosphors as a photoactive component, including a core based on cadmium selenide, and semiconductor shells based on cadmium sulfide and zinc sulfide. A method for producing the specified sensitive element is proposed.

EFFECT: invention makes it possible to obtain a sensitive element of a luminescent sensor with high detection sensitivity.

4 cl, 2 dwg, 3 ex