摘要
本文利用 X 射线光电子能谱、红外光谱和荧光光谱技术对 Sm(Ⅲ)与聚 N-异丙基丙烯酰胺的相互作用进行了研究.结果表明:Sm(Ⅲ)和聚 N-异丙基丙烯酰胺(PNIPAM)有显著的相互作用.其一,Sm(Ⅲ)可与 PNI-PAM 中酰胺基团上的氧原子和氮原子配位形成配合物 PNIPAM-Sm(Ⅲ);其二,PNIPAM-Sm(Ⅲ)配合物兼具热敏性;其三,Sm(Ⅲ)与 PNIPAM 之间能量传递达到55%,当 Sm(Ⅲ)质量分数为1.25%时荧光强度最大。
A new kind of thermosensitive and fluorescent complex of Poly （ N - isopropylacrylamide ） and Sm（ Ⅲ ） , PNIPAM - Sm （ Ⅲ ） , was synthesized by free radical polymerization, in which Poly （ N - isopropylacrylamide ）, PNIPAM, was used as a polymer ligand. The complex was characterized by X - ray photoelectron spectroscopy （ XPS ） , Fourier transform infrared （ FT - IR ） and fluorescence spectroscopy. The results exhibit that Sm（ Ⅲ ） is bonded to nitrogen and oxygen atoms in the polymer chain of PNIPAM and formed the complex of PNIPAM -Sm（ Ⅲ ）. The maximum emission intensity of PNI- PAM - Sm（ Ⅲ ） at 547 nm is enhanced about 145 times compared with that of the corresponding Sin（ Ⅲ ） ,and the intramolecular energy transfer efficiency reaches 65% , demonstrating that there exists an efficient intermolecular energy transfer from the polymer ligand to Sm（Ⅲ ）.
出处
《化工科技市场》
CAS
2007年第8期16-19,共4页
Chemical Technology Market
基金
江苏省污染防治专项基金(2005051)
