Flexible organic room‐temperature phosphorescent materials

Organic room‐temperature phosphorescent (RTP) materials have attracted significant attention in the field of flexible electronics due to their low cost, light weight, long emission lifetime, and large Stokes shift. Although conventional strategies such as crystal engineering and host‐guest doping have proven effective for achieving RTP, these methods typically result in brittleness and fragility of organic materials, severely limiting their practical applications in flexible electronic devices. Therefore, it is imperative to develop organic RTP materials with high flexibility. This review focuses on the latest research progress in flexible organic RTP materials, covering two types of material systems: organic crystals and polymers. This review not only highlights the challenges in achieving mechanical flexibility of organic RTP materials, but also discusses strategies for developing high‐performance flexible organic RTP materials, facilitate practical applications of anti‐counterfeiting technologies, flexible displays, and bioimaging.