Upconversion Nanorods@Covalent Organic Framework with Enhanced Red Emission: A Ratiometric Fluorescent Probe for Uranyl Ions Detection.
Uranium-contaminated aqueous systems pose severe threats to life and health due to their combined chemical toxicity and radioactivity, particularly through bioaccumulation in the food chain. In this study, a novel near-infrared (NIR)-driven ratiometric fluorescent probe (UCNRs@COF) was fabricated by surface-growing a c...