Long‐Persistent Circularly Polarized Luminescence from a Host‐Guest System Regulated by the Multiple Roles of a Gold(I)‐Carbene Motif

*) which can be converted into the charge-transfer (CT) state, thereby resulting in afterglow luminescence. Moreover, the use of a chirality unit on the guest molecule results in the LPL being circularly polarized. This work illustrates that transition-metal complexes can be used for developing organic afterglow systems by exquisite control over the excited state mechanism.