In situ control of polymer helicity with a non-covalently bound photoresponsive molecular motor dopant.

The transfer of chirality from a molecular motor to a dynamic helical polymer via ionic interactions was investigated. A dopant with photoswitchable chirality was able to induce a preferred helicity in a poly(phenylacetylene) polymer and the helicity is inverted upon irradiation. The findings described herein will advance the development of functional and responsive polymeric systems.