Helical Polyacetylene H-PA

Figure 2.6 SEM micrographs of helical polyacetylene (H-PA) film synthesized in the right-handed (/ )-System-l PCH302 PCH304 (if)-D-l = 100 100 2 (mole ratio) with a helical pitch of 5 pm. The photograph of (b) shows the magnified one of (a).

Fig. 9.35 Scanning electron microscope (SEM) photographs of helical polyacetylene (H-PA) film with hierarchical spiral morphology. The inset shows right-handed screwed bundles of fibrils in a domain of spiral morphology...

In this chapter, I outlined recent developments of a new polymerization techniques using a asymmetric liquid crystal reaction field of the N -LC phase, focusing on helical polyacetylene with a super-hierarchical spiral structure (H-PA). Chiral binaphthyl axially chiral derivatives are added as a chiral dopant to nematic liquid crystal to produce the chiral N -LC phase. 

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