Abstract
AbstractThe photochemical dehydrochlorination of a chlorinated poly(vinyl chloride) film was investigated with respect to the preparation of a π‐electron‐conjugated polymer. The dehydrocholorination proceeds more effectively upon irradiation with a KrF excimer laser than with a low‐pressure mercury lamp, showing the formation of new absorption bands in the range 300–800 nm. The most effective condition provided KrF excimer laser irradiation of 25− 30 mJ/cm2 at 1 Hz in a vacuum chamber of 10−6 Torr at 90°C. The surface of the irradiated film was analyzed by IR (attenuated total reflection method), X‐ray photoelectron and Raman spectroscopy. The characteristic peaks (1 112, 1 488 and 2 188 cm−1) in the Raman spectrum were ascribed to a structure having eight conjugated CC bonds and twenty conjugated CC bonds.
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