Quantum organic glow lasts hours in new air-stable material

Researchers have achieved air-stable organic long persistent luminescence with duration times ranging from 1.6 to 7154.3 seconds, a significant challenge in the field. The work details a platform utilizing flexible phosphorescence donors and electron acceptors to create stable radical anions within an amorphous system, and experimental results confirmed the amorphous state with long-range disorder was dominant, while dispersed microcrystals also existed, simultaneously guaranteeing both processability and air stability. Emission colors were regulated across the 500-680 nm range by increasing the doping concentration of guest molecules. This advance addresses the significant challenge of maintaining luminescence for one hour while exposed to air. A glow lasting over two hours…