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利用透射电镜、X射线光电子能谱、动态激光光散射和荧光光谱技术对Tb(Ⅲ)与聚N-异丙基丙烯酰胺(PNIPAM)接枝核壳纳米微球PNIPAM-g-P(NIPAM-co-St)(PNNS)的相互作用进行了研究.结果表明:Tb(Ⅲ)和热敏性的核壳纳米微球PNNS有显著的相互作用.其一,Tb(Ⅲ)可与PNNS中酰胺基团上的氧原子配位形成微球配合物Tb(Ⅲ)-PNNS;其二,Tb(Ⅲ)-PNNS微球配合物兼具热敏性;其三,该配合物在545nm处的荧光强度较Tb(Ⅲ)增大了233倍,Tb(Ⅲ)与PNNS分子间能量传递达到50%,当Tb(Ⅲ)质量分数为12%时荧光强度最大.
The effects of Tb (Ⅲ) and PNIPAM-grafted PNIPAM-gP (NIPAM-co-PEG) on the mechanical properties of the composites were investigated by transmission electron microscopy, X-ray photoelectron spectroscopy, dynamic laser light scattering and fluorescence spectroscopy. (PNNS). The results show that Tb (Ⅲ) and PNNS of heat-sensitive core-shell nanospheres have a significant interaction. First, Tb (Ⅲ) Tb (Ⅲ) -PNNS microspheres are both thermosensitive. Thirdly, the fluorescence intensity of this complex at 545nm is higher than that of Tb (Ⅲ) -PNNS. , The energy transfer between Tb (Ⅲ) and PNNS reached 50%, and the fluorescence intensity reached the maximum when Tb (Ⅲ) was 12%.