A C2-symmetric binaphthyl-based luminophore connected to two luminescent pyrene pendants was designed to express cryptochirality, as demonstrated by the ultraweak circular dichroism signals observed in their ground state. The observed results were due to the unrestricted rotational freedom of the flexible ester wires between the binaphthyl and pyrene moieties in the absence of light. Finally, the C2-symmetric luminophore revealed photoexcited chirality, as confirmed by intense circularly polarised luminescence.
