Magneto-optically active polythiophene derivatives bearing a stable radical group from achiral monomers by polycondensation in cholesteric liquid crystal

Chiral π-conjugated polymers bearing a stable radical group are successfully prepared by chiral inductive asymmetric polymerization using a cholesteric liquid crystal medium. The polymers thus synthesized form “structural chirality”, with the structure of the polymer being analogous to that of the one-handed helical form of the cholesteric liquid crystal. Chirality and magnetic properties of the present polymers were elucidated.