(R)‐1 b self‐assemble in a cooperative manner with a low degree of cooperativity, the aggregation of (S)‐2 and 3 is well described by an isodesmic model. Therefore, the interaction between the chiral coil chains conditions the handedness of the helical pitch, the stability of the supramolecular structure and the supramolecularpolymerization mechanism of the studied OPEs.