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Novel hydrophilic polymers consisting of fluorene modified by alkoxyl  chain were  designed and synthesized  via  radical polymerization from acrylic acid (PAAF) or acrylamide (PAMF) in the presence of azobisisobutyronitrile. All of these polymers were good water-soluble. The photophysical behaviors of the polymers and the selectivity and sensitivity to detection metal ions were studied by UV-visible and fluorescence spectroscopy technique, and some color changes were visible to the naked eye appeared. The PAMF fluorescent probe showed good selectivity and sensitivity to detection Fe 3+  (2.4 × 10 −7  mol/L) and PAAF exhibited good selectivity and sensitivity to detection Fe 2+  (1.5 × 10 −6  mol/L) and Cu 2+  (5 × 10 −7  mol/L) in water.

journal of macromolecular science, part a

A hydrophilic polymer based on alkoxyl chain modified fluorene: the novel fluorescence colorimetric sensor for Fe 3+ , Fe 2+ , and Cu 2+  in aqueous media