Photoswitching chiroptical response in camphorate-based chiral metal–organic frameworks

]·3EtOH·5DMF (Cd-MOF) that undergo a photoinduced reduction of the NDI cores. Delocalisation of the generated mixed-valence state in Cd-MOF stabilises the radical state and alters its response in comparison to Zn-MOF. The photoinduced reduction reveals a reversible change in the sign of the circular dichroism spectrum of Cd-MOF. These materials show promise in understanding and controlling chiroptical materials for next-generation devices.