Enabling Multicolor Circularly Polarized Organic Long Persistent Luminescence through Chiral Exciplex

Abstract Circularly polarized organic long persistent luminescence (CP‐OLPL) has garnered significant attention due to its distinctive properties. However, achieving CP‐OLPL materials with ultralong durations remains a formidable challenge. Herein, an effective strategy is proposed to obtain long‐lived CP‐OLPL by constructing a self‐designed chiral donor for developing a host–guest chiral exciplex system. The gradual recombination of long‐lived charge‐separated states enables a green CP‐OLPL emission to persist for over 1.5 hours with an asymmetry factor (| g lum |) of 4.5 × 10 −3 . More intriguingly, doping with rubrene fluorophore yields an orange‐red CP‐OLPL system, exhibiting a duration over 1 hour and | g lum | of 2.3 × 10 −3 through synergistic singlet‐singlet and chirality energy transfer. These properties render the development of chiral afterglow display, multi‐level information encryption, and afterglow lighting. This work not only represents a significant advancement in the design of chiral donors for ultralong CP‐OLPL exciplex system with durations but also provides valuable insights into exciton dynamics.