Lattice dynamics and vibrational spectra of polyfuran: effective conjugation coordinate and photoexcited spectrum.

Summary form only given. Recently, neutral polyfuran (PFu) has been prepared following the cathodic routo by electroreduction of 2,5-dibromofuran using Ni(biPY)/sub 3/ /sup 2+/. The spectroscopic analysis of the PFu samples in the pristine and iodine-doped states indicated that polyconjugation may exist in the polymer. Here, we extend our study of polyconjugation in PFu to the photoinduced infrared absorption spectrum. The formalism of the Effective Conjugation Coordinate which was used in the analysis of pristine and doped material will be used to understand the photoinduced infrared spectrum.