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

Recently the photoinduced infrared spectrum of neutral polyfuran was recorded. The observed spectrum combined with the doping-induced infrared and the FT-Raman spectrum of the neutral polymer, interpreted in terms of the effective conjugation coordinate theory, suggests that the samples consist of a bimodal distribution of conjugation lengths. PFu seems to be very stable in air at room T and shows the largest π electron delocalization among polyheteroaromatics.