A reversible photoreaction of iron(III) chloride in poly(vinyl chloride) film

Abstract

Poly(vinyl chloride) (PVC) films containing FeCl₃ showed absorption spectra in the 300–400 nm region which were characteristic of FeCl⁻₄. On irradiation of the films in air the absorptions were reduced in intensity but were restored in a subsequent dark reaction to levels which were higher than those before irradiation. The relation between these systems and doped polyacetylene is discussed.