Abstract

Two substituted polyacetylenes, poly(l,6-heptadiyne) and poly(propiolic anhydride), have been synthesized by cyclopolymerization of diacetylenic precursors. The former polymer has been examined in some detail. Under suitable conditions, it can be doped to a conductivity(σ) of ~ 1 s/cm. It displays a number of contrasts to polyacetylene in its morphology, lack of crystallinity, and electron spin resonance behavior. Poly(propiolic anhydride) has been examined only in a preliminary manner ; however, this system offers the possibility for generation of a range of substitutents by facile modification of the starting monomer or the product polymer. Cyclopolymerization is a feasible route for synthesis of a family of conducting polymers.

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