No abstract

A series of alternating copolymers of 2,5-(3,4-ethylenedioxy)thiophene and 1,2-vinylene with well defined repeat unit ratios were synthesized and characterized electrochemically and spectroscopically. By increasing the vinylene to thiophene ratio from 0:1 to 0.5:1 to 1:1 along the polymer backbone, the bandgap of the resulting polymers were reduced systematically as clearly evidenced by absorption spectroscopy. The 1:1 copolymer exhibited an onset bandgap of 1.0 eV.

No abstract

Electrically conductive elastomer foams were prepared by in situ vapor phase copolymerization of pyrrole and N‐methylpyrrole within preformed polyurethane foams. The conductive polymer is formed within the dense polymer phase of the foam, and the conductivity of the composite foam ranged from 10−1 to 10−7 S/cm. The conductvity depended on the density of the foam, the amount of conducting polymer incorporated, and the copolymer composition. Replacing with N‐methylpyrrole in the copolymer lowered the conductivity.

No abstract