Synthesis and properties of helical polyacetylene

We have synthesized for the first time helical polyacetylene [(CH)x] with leftand right-handed screwstructures under chiral nematic reaction field. We discuss the influence of the chiral nematic reaction field on film properties, morphology, crystal structure, electrical conductivity, and optical activity. These properties are characterized by scanning electron microscopy (SEM), X-ray diffraction, the four-probe method and circular dichroism (CD) spectroscopy.