It has been shown over the last 25 years that conjugated polymers could exhibit conductivities ranging from that of undoped silicon to that of metallic copper. The most promising of these have been polyacetylene,' poly-p-phenylene,2 poly- aniline,2 polypyrrole2 and polythiophene.2 A possible way to control the conductivity of these materials may be to attach mesogenic side groups in order to confer better ordering. Some preliminary work has been reported on ...
