Water-Induced Structural Instability in Zinc Coordination Polymers for Dual-Channel Fluorescent Sensing of Cu2+ and Cysteine

(limit of detection: 0.0162 mg/L) and 0.5-14 μM for Cys (limit of detection: 0.4380 μM). Unlike conventional approaches that focus on enhancing water stability, this study highlights the potential of water-unstable coordination polymers in environmental and bioanalytical applications and provides new insights into the design of fluorescence sensors based on structural transformations.