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合成了聚N-异丙基丙烯酰胺-丙烯酸P(NIPAM-co-AAc)共聚微凝胶与Eu(Ⅲ)离子、α-噻吩甲酰三氟丙酮(HTTA)的三元配合物。用透射电镜、激光光散射、Zeta电位、紫外光谱、红外光谱、荧光光谱进行了表征。结果表明,微凝胶粒径为400nm;Eu(Ⅲ)与微凝胶、HTTA之间以配位作用为主;微凝胶、HTTA和Eu(Ⅲ)之间能进行有效的能量传递。其配合物的最佳激发波长为317nm,在此激发波长下Eu(Ⅲ)有较强的荧光特征发射。
A ternary complex of poly N-isopropylacrylamide-acrylic acid P (NIPAM-co-AAc) copolymer microgels with Eu (Ⅲ) ions and α-thienyltrifluoroacetone (HTTA) was synthesized. Transmission electron microscopy, laser light scattering, Zeta potential, UV, IR and fluorescence spectra were characterized. The results showed that the size of microgel was 400 nm. The coordination between Eu (Ⅲ) and microgel and HTTA was dominated. The microgels, HTTA and Eu (Ⅲ) were able to transfer energy efficiently. The best excitation wavelength of the complex is 317 nm, and Eu (Ⅲ) has strong fluorescence emission at this excitation wavelength.