Abstract
The temperature-dependent steady-state emission, emission polarization anisotropy, and fluorescence-kinetics of poly(2,3,4,5,6-pentafluoro styrene) film are reported. Two interconverting excited-state conformations of the chromophore have been identified. The fluorescence of the higher energy conformation results from excitation on the red edge of the polymer absorption band at temperatures below 180 K. The energy barrier for conversion of the high energy conformer to the lower energy conformer is estimated to be E/hc = 27 + or - 7/cm. Electronic energy migration is not evident in this polymer.
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