Chemiluminescent properties of fluorene- and carbazole-containing polymeric fluorophores

Fluorene- and carbazole-containing distyrylarylene model and polymeric fluo rophores were prepared by reacting 2,7-dibromo-9-butylfluorene and 3,6-dibr omo-9-butylcarbazole with styrene and divinylbenzene using the Heck reactio n for the chemiluminescence. The UV-vis absorbance, photoluminescence (PL) as well as the chemiluminescence (CL) characteristics of the model and poly meric fluorophores were measured. Sodium salicylate-catalyzed reaction of b is(2,4,6-trichlorophenyl)oxalate (TCPO) with hydrogen peroxide produced a s trong chemiluminescent blue light emission with 439-489 nm in the presence of the fluorophore. The wave-length of CL Light was similar to that of phot oluminescence. The chemiluminescent intensity was decayed according to the exponential equation. The glow of CL maintained more than 12 hr and was vis ible with naked eye.