Cheng Ruidong, Zhang Xuehui, Zheng Hua, Li Jie, Ge Feijie, Zhang Qiuyu
Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China.
Nano Lett. 2025 Aug 13;25(32):12309-12317. doi: 10.1021/acs.nanolett.5c02898. Epub 2025 Aug 1.
Realizing full-color room-temperature phosphorescence (RTP) under aqueous conditions remains a significant challenge due to the inherent difficulty of stabilizing hydrophobic phosphors within water-based matrices, let alone for unmodified commercial hydrophobic aromatic compounds. In this work, we introduce a versatile glassy hydrogel platform engineered through a solvent exchange-induced nanoscale phase separation strategy, which enables the stable encapsulation of various commercial aromatic compounds within a rigid polymer network. The resulting hydrogels exhibit tunable full-color RTP with long-lived lifetimes, enhanced emission underwater, and outstanding mechanical robustness. In addition to their plastic-like rigidity, these glassy RTP hydrogels display shape-memory characteristics and allow for programmable 2/3D structural reconfiguration. Notably, they facilitate multidimensional information encryption through multicolor triplet-to-singlet Förster resonance energy transfer (TS-FRET) and enable high-resolution spatial patterning. This work offers a general strategy for constructing RTP hydrogels and hydrogel-derived plastics, opening promising avenues for advanced anticounterfeiting, optical sensing, and underwater photonic applications.
由于在水基基质中稳定疏水性磷光体存在固有困难，更不用说对于未改性的商业疏水性芳香族化合物了，因此在水性条件下实现全彩室温磷光（RTP）仍然是一项重大挑战。在这项工作中，我们引入了一种通过溶剂交换诱导的纳米级相分离策略设计的通用玻璃态水凝胶平台，该平台能够将各种商业芳香族化合物稳定封装在刚性聚合物网络中。所得水凝胶表现出具有长寿命的可调全彩RTP、增强的水下发射以及出色的机械强度。除了类似塑料的刚性外，这些玻璃态RTP水凝胶还具有形状记忆特性，并允许进行可编程的2/3D结构重构。值得注意的是，它们通过多色三重态到单重态Förster共振能量转移（TS-FRET）促进多维信息加密，并实现高分辨率空间图案化。这项工作为构建RTP水凝胶和水凝胶衍生塑料提供了一种通用策略，为先进的防伪、光学传感和水下光子应用开辟了有前景的途径。
