We have successfully synthesized two side-chain liquid crystalline polyacetylenes (denoted as P3-5 and P2-5) with the mesogenic units based on a “phenyl− ester− phenyl” motif directly linked to the semirigid polyacetylene backbone in a terminal-on mode without flexible spacer. During the polymerization catalyzed by Rh (nbd)[B (C6H5) 4] in toluene, the resultant polymers (or oligomers) automatically precipitate out of the polymerization ...
