Recovery of PET-quenched Fluorescent Conjugated Polymers with Aza-15-crown-5 as Pendant Groups on Interaction with Ions

摘要

Novel conjugated polymers with aza-15-crown-5 as pendant groups,P1 were synthesized by the Sonogashira coupling reaction.The polymer P1 was found to show fluorescence enhancement response towards Ba2+.The gradual recovery and turning-point of emission intensity of polymers appeared in the addition of Ba2+,which provided good evidence for the fluorescence amplification mechanism of conjugated polymers.