A number of polyfluorinated triarylpyrazolines containing cationic centers in the form of piperazinium salts in fluorinated rings have been obtained. The synthesis is based on the substitution reaction of fluorine atoms with a 1-methylpiperazino group followed by quaternization of the nitrogen atom in the piperazine cycle. The effect of the salt structures on the spectral characteristics is investigated, and the quantum yields of photobleaching in the presence of triphenylbutyl borate are measured.
I.N. Gavrilov (Wed,) studied this question.