FIELD: organic chemistry. SUBSTANCE: use of (ethane-1,2-diylbis(oxy))bis(ethane-2,1-diyl)bis(pyrene-1-carboxylate) as a monomolecular optical sensor for the detection of nitroaromatic explosives. The invention can be used in security systems as a means of detecting explosives as part of the sensor material of fluorescent explosive detectors, as well as in everyday life and agriculture. EFFECT: decrease in the intensity of emission caused by photoexcitation upon contact of (ethane-1,2-diylbis(oxy))bis(ethane-2,1-diyl)bis(pyrene-1-carboxylate) with nitroaromatic explosives. 1 cl, 2 dwg, 2 tbl.