An ideal optically active helical chromophoric polymer comprising a flexible rodlike silicon main chain and enantiopure alkyl side chains, poly {(S)-3, 7-dimethyloctyl-3- methylbutylsilylene}, underwent a thermo-driven helix-helix transition at-20° C in isooctane. The transition characteristics, including transition temperature, transition width, the population of right-and left-handed helical motifs, global shape, and screw-pitch, were to ...
