Jianbing Liu, Peng Zhao, Yizheng Tan*, Huaping Xu*
Supramolecular Materials, 2025: p. 100115.
Fluorescent polymeric materials have recently gained significant attention in diverse fields, including biological imaging, luminescent sensing, encryption, and anti-counterfeiting. However, the patterning of many materials mentioned above has primarily been achieved through soft lithography technology using ultraviolet light, which can cause unnecessary damage to the materials and is limited by a shallow penetration depth. Herein, we introduce oligo(p-phenylene vinylene) derivatives (cyano-OPVs) as fluorescent molecules into diselenide-containing polyurethane (PUSeSe). Upon swelling, OPV molecules transition from aggregates to monomers, resulting in a blue shift in fluorescence spectra. By leveraging diselenide metathesis within the material, we successfully stabilized the monomeric state of OPV, enabling the inscription of green fluorescent images in illuminated regions, distinct from the original orange emission of the aggregated state. These materials can be effectively patterned within ten minutes under gentle and harmless visible light illumination. This visible light-induced fluorescence patterning method offers a convenient approach for designing advanced anti-counterfeiting materials with broader applications.
