聚N-异丙基丙烯酰胺与Eu(Ⅲ)相互作用的研究  

Study on Interaction Between Eu(Ⅲ) and Poly(N-Isopropulacrylamide)

作　　者：殷伟庆 钱琦 陈明清 陆天虹[1] Mitsuru Akashi 黄晓华[1] 

机构地区：[1]江南大学,江苏无锡214036 [2]大阪大学工学部分子化学系

出　　处：《稀有金属快报》2006年第6期15-20,共6页Rare Metals Letters

基　　金：国家自然科学基金(20471030);国家发改委稀土专项基金(GFZ040628);江苏省高新技术基金(BG2005040)资助项目

摘　　要：利用X射线光电子能谱、红外光谱、紫外光谱和荧光光谱对Eu(Ⅲ)与聚N-异丙基丙烯酰胺(PNIPAM)的相互作用进行了研究。结果表明,Eu(Ⅲ)和PNIPAM有相互作用:①Eu(Ⅲ)可与PNIPAM中酰胺基团配位形成配合物PNIPAM-Eu(Ⅲ);②PNIPAM-Eu(Ⅲ)配合物兼具热敏性;③Eu(Ⅲ)与PNIPAM之间存在能量传递,当Eu(Ⅲ)含量为0.8w%时荧光强度最大。A new kind of thermosensitive and fluorescent complex of Poly （N-isopropylacrylamide） and Eu （ Ⅲ）, PNIPAM-Eu （Ⅲ）, was synthesized by free radical polymerization, in which Poly （N-isopropylacrylamide） and PNIPAM was used as a polymer ligand. The complex was characterized by fourier transform infrared （FT-IR） and fluorescence spectroscopy. The results exhibit that Eu （ Ⅲ ） is bonded to PNIPAM and formed the complex of PNIPAM-Eu .（ Ⅲ ） which has thermal-sensivity, and there exists an efficient intermolecular energy transfer from the polymer ligand to Eu （ Ⅲ ）. When the weight ratio is 0.8%, the maximum fluorescence enhancement can be obtained. Nevertheless, the lower critical solution temperature of PNIPAM containing a low content of Eu （Ⅲ） has not obviously changed after the formation of the complex of PNIPAM-Eu （ Ⅲ ） by the interaction between PNIPAM and Eu（Ⅲ ）.

关 键 词：聚N-异丙基丙烯酰胺 Eu(Ⅲ) 能量传递 低临界溶解温度(LCST) 

分 类 号：O614.338[理学—无机化学]