N-ALKYLAZACROWN-CONTAINING STYRENE DYES AS OPTICAL MOLECULAR SENSORS FOR DETECTING CATIONS OF ALKALI

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FIELD : chemistry.SUBSTANCE : invention relates to a novel type of compounds - N-alkylazacrown-containing styrene dyes of general formula I : in which A+ is a heterocyclic residue of formula or In formula (I) - fragment of N-alkylbenzoazacrown-ether of formula (IV) : where R6 is a lower alkyl; n=0-3; to a method of preparing the said compounds, as well as to novel composite film materials based on formula (I) dyes.EFFECT : efficient optical chemosensory properties with respect to cations of alkali and alkali-earth metals.4 cl, 4 tbl, 9 ex