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Effects of various metal ions on the fluorescence intensity of polymer solution (Cpolymer = 0.1 mg/mL, Cmetal ions = 50 µM). (A) Fluorescence photos of polymer solution versus metal ions under 365 nm UV light. The relative intensities of P1and P2 solution fluorescence (F/F0) versus metal ions are shown in P1 solution (B) and P2 solution (C), respectively.
