Chemiluminescent properties of copolyesters containing red and blue chromophores

Polyester fluorophores containing red and blue light-emitting chromophore units were prepared by copolycondensation of perylene tetracarboxydiimide and diphenyl anthracene derivative with sebacoyl chloride for the chemiluminescence. The properties of fluorophore polymers were studied by UV–Vis spectrophotometric, photoluminescent and chemiluminescent investigation. The intensities of UV–Vis absorbance, photoluminescence and chemiluminescence spectra appeared to systematically increase as the content of two monomers. The sodium salicylate-catalyzed reaction of bis(2-carbopentyloxy-3,5,6-trichlorophenyl)oxalate with hydrogen peroxide provided a strong chemiluminescent light changing from red to blue according to the content of two chromophore units; these were similar to the photoluminescent spectra. The chemiluminescent intensity was decayed biexponentially, but the glow of chemiluminescence maintained more than 24 h and was visible with the naked eye.