8-羟基喹啉的高分子化及其Eu(Ⅲ)配合物的制备和表征

Synthesis and Fluorescence Properties of Europium-Containing Polymers with 8-Hydroxyquinoline Moieties

在合成含有8-羟基喹啉(8HOQ)配位基单体的基础上,将其与甲基丙烯酸甲酯(MMA)共聚得到含有8-羟基喹啉侧基的聚甲基丙烯酸甲酯(PMMA8q),实现了8-羟基喹啉的高分子化;通过PMMA8q和小分子协同配体与稀土离子Eu(Ⅲ)的配位反应,制备了两个稀土高分子发光配合物:Eu(PMMA8q)(8HOQ)2(H2O)3和Eu(PMMA8q)2(TTA)(H2O)3(TTA:噻吩甲酰三氟丙酮)。利用元素分析、红外光谱方法对各阶段产物进行了表征,用荧光光谱研究了两个稀土高分子配合物的荧光特性及发光机理。

A functional methylmethacrylate polymer containing pendant 8-hydroxyquinoline（PMMA8q） and its two complexes with Eu3＋,i.e.,Eu（PMMA8q）（8HOQ）2（H2O）3 and Eu（PMMA8q）2（TTA）（H2O）3（TTA is thenoyltrifluoroacetone,8HOQ is 8-hydroxyquinoline） were synthesized.The structures of the polymer complexes were investigated by elemental analysis and infrared spectra（IR）.The fluorescence properties and emission mechanism of the two rare earth-containing polymers were studied using fluorescence spectroscopy.It was found that Eu（PMMA8q）2（TTA）（H2O）3 had the sensitization of the metal-centered fluorescence through the attached ligands,while Eu（PMMA8q）（8HOQ）2（H2O）3 had the sensitization of the ligand-centered fluorescence through the rare earth ion.