稀土配合物及其共聚物的合成与性能研究

Studies on synthesis and properties of rare earth complexes and copolymers

摘要:

以丙烯酸（HAA）、甲基丙烯酸（HMA）及1,10-邻菲罗啉（Phen）为配体与氧化铕（Eu2O3）反应得到二元配合物Eu(AA)3、Eu(MA)3和三元配合物Eu(AA)3Phen、Eu(MA)3Phen。将生成的配合物与HMA和甲基丙烯酸甲酯（MMA）共聚，得到一系列三元共聚物。通过元素分析、红外光谱、荧光光谱和热分析对配合物进行了分析与表征，发现配合物具有良好的荧光强度和热稳定性。三元配合物的荧光强度相对于二元配合物有显著提高。共聚物可发射Eu3 的特征荧光, 荧光强度随配合物含量的增加而增加,且未发生浓度猝灭现象。三元配合物在反应单体MMA和HMA中的溶解度低于二元配合物，从而使在最大溶解度下二元配合物与反应单体生成共聚物的荧光强度高于相应的三元配合物与反应单体生成的共聚物。

Abstract:

Two binary complexes Eu(AA)3,Eu(MA)3 and two ternary complexes Eu(AA)3Phen, Eu(MA)3Phen were synthesized by the reaction of Eu2O3 with acrylic acid (HAA), methacrylic acid (HMA) and 1,10-phenanthroline(phen).The four complexes were characterized by elemental analysis, FT-IR, fluorescence and thermal analysis. It shows that the complexes have excellent thermal stability and fluorescence intensity. The ternary complexes have a significant increase in the luminous intensity compared to the binary complexes. The copolymers emit characteristic fluorescence of Eu3 and the fluorescence intensities increase with the increase of the concentration of the complexes in the copolymers. At the same time, there is no concentration quenching. The copolymers copolymerized with binary complexes have stronger luminous intensity than the copolymers copolymerized with ternary complexes under maximum solubility because the solubility of the ternary complexes in the mixture of MMA and HMA are less than the binary complexes.