Macroscopic handedness inversion of terbium coordination polymers achieved by doping homochiral ligand analogues

Macroscopic chirality of right-handed Tb( R -cyampH) 3 ·3H 2 O superhelices can be inversed by controlling the doping ratio of homochiral ligand analogue R -XpempH 2 (X = H, F, Cl, Br), where pempH 2 can introduce new weak interactions into the system.