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Properties of Tb(III) and the copolymer microgel complex

Based on the synthesis of the copolymer of N-isopropylacrylamide and acrylic acid copolymeric microgel P(NIPAM-co-AAc), a new kind of complex of Tb(III) and P(NIPAM-co-AAc) with novel fluorescent properties was successfully prepared and characterized with different techniques. The UV and FT-IR spectrum showed that terbium coordinated with the carbonyl group of the microgel. The fluorescence spectrum indicated that the complex had good fluorescence properties and obtained the strongest fluorescence emission at 1.0 wt% ratio. This novel thermosensitive and fluorescence characterization of the P(NIPAM-co-AAc)-Tb(III) complex may be useful in fluorescence systems and the biomedical field.