Synthesis and evaluation of fluorescent materials for colour control of peroxyoxalate chemiluminescence. III. Yellow and red fluorescent emitters

Abstract

A number of bis(phenylethynyl)-substituted anthracenes and naphthacenes have been synthesized and their suitability as fluorescent additives for peroxyoxalate chemiluminescence evaluated. Fluorescence and chemiluminescence emission data for all compounds are presented. Both 2-chloro- and 6-chloro-5,12-bis(phenylethynyl)naphthacene provide effective scarlet chemiluminescence with the peroxyoxalate system (?max 609 and 614 nm respectively). Although solutions of both compounds decolorize slowly in the presence of air and light, when used in concentrations of 1-5 × 10-3M they allow efficient chemiluminescence for greater than 5 h.