Ultrafast excited state dynamics of polybenzonitrile investigated by using femtosecond time-resolved fluorescence up-conversion

Abstract The photoluminescence dynamics of a new polymer, (–CN–) conjugated polybenzonitrile, was investigated with a femtosecond time-resolved fluorescence up-conversion technique. The experimental results revealed a bi-exponential relaxation dynamics for excited state and it was explained with the photo-generated excitons’ migration model.