Fig. 3

Dissolution of metal-alginate hydrogels by CD1/4. (A) Metal-alginate hydrogels, (B) metal-alginate hydrogels dissolved by 50Â mg/mL CD1/4, (C) 2.5 mL of 3 mM metal ion solution, (D) metal ion solution added with CD1/4 (0.8 mL, 50Â mg/mL), (E) the ratio of dissolved hydrogels, (F) fluorescence intensity of 0.48Â mg/mL CD1/4 with 0.1 mM metal ions