Azoarenes with Opposite Chiral Configurations: Light‐Driven Reversible Handedness Inversion in Self‐Organized Helical Superstructures

On the other hand: Azoarene compounds with axially chiral binaphthyl units of the same and opposite chiral configurations were doped into achiral liquid crystals (LCs). They were found to efficiently induce self-organized helical superstructures, which could be reversibly tuned by light irradiation using trans–cis photoisomerization to change the handedness of the helix (see scheme) in LC hosts.