Stimulus-responsive organic room temperature phosphorescence materials

Organic room-temperature phosphorescence (RTP) materials have attracted considerable interest due to their unique advantages, such as tunable molecular structures, excellent processability, intrinsic flexibility, and diverse excited-state characteristics. Among these, stimuli-responsive RTP materials, whose luminescence can be modulated by external stimuli (e.g., light, pH, heat, mechanical force or solvent), hold great promise for advanced applications like anti-counterfeiting, information encryption, and sensing. In this review, we systematically summarize recent advances in stimuli-responsive RTP materials, classifying them based on their activation mechanisms. Specifically, we elucidate the fundamental principles governing their stimulus-responsive behaviors and highlight representative examples from various categories. Furthermore, we explore structure-property relationships and design strategies to establish a foundational framework for understanding these materials. This review not only deepens the mechanistic insights into stimuli-responsive RTP systems but also provides strategic guidance for the rational design of next-generation intelligent RTP materials in multidisciplinary fields.