Conductivity of polydiacetylene with π‐conjugation between polymer backbone and substituents

Poly‐1,4‐bis(3‐acetamidephenyl)‐1,3‐butadiyne, i.e., a topochemically obtained polydiacetylene for which one can expect π‐conjugation between polymer backbone and substituents, has been examined as a candidate of conducting polymers. Upon iodine doping, the polymer film attained the conductivity of 4.8 × 10−2 S/cm, i.e., about three orders of magnitude greater than those of other polydiacetylene films which have no such π‐conjugation.