Multicolor dynamic optical materials exhibit significant potential in the realms of anticounterfeiting and information encryption, benefitting from their capacity for generating unpredictable optical information that changes over time. Herein, a novel approach is presented utilizing quantum-confinement effect of MAPbBr quantum dots (QDs) embedded within lanthanide-metal organic frameworks (Ln-MOFs) for time-resolved multicolor dynamic anticounterfeiting applications. The dimensions of MAPbBr QDs undergo temporal variations during in situ growth, resulting in dynamic alterations in luminescent color due to the quantum-confinement effect. Furthermore, the emission colors of MAPbBr@Eu-MOFs can be modulated by varying UV excitation wavelengths, thereby conferring a spatially distinguishable anticounterfeiting dimension. The time-resolved unpredictability of these dynamic color changes coupled with sustained luminescent intensity and multi-dimensional anticounterfeiting, render them suitable system for advanced graphical coding. These findings pave the way for the advancement of intelligent multicolor dynamic optical anticounterfeiting.
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