Lanthanide-Doped Upconversion Nanoparticle-Cross-Linked Double-Network Hydrogels with Strong Bulk/Interfacial Toughness and Tunable Full-Color Fluorescence for Bioimaging and Biosensing

The design and fabrication of tough and fluorescent hydrogels still remains as a challenging problem due to the poor mechanical property and water-induced luminescence quenching effect. Here, a new...