铕高分子配合物荧光强度与铕离子浓度的关系

Relationship between Fluorescence Intensity of Eu Complexes in Polymer and Europium Ion Concentration

稀土离子发光材料性能优良,既可电致发光又可光致发光,广泛应用于生物分析化学,激光材料,防伪商标等领域。本文以邻菲啰啉为小分子配体,聚丙烯酸-甲基丙烯酸甲酯为高分子配体,制备铕的高分子荧光配合物,研究了配合物中荧光强度与铕离子浓度的关系,发现Eu3+的浓度在1.25×10-5mol/L和2.0×10-4mol/L之间配合物的荧光强度与Eu3+的浓度呈线性关系,其加标回收率为98.6～101.3%,在该浓度范围内可对配合物中Eu3+浓度进行定量测定。

Rare-earth ion-performance was outstanding in light-emitting. The materials can be used to electroluminescence and photoluminescence, and it was widely used in bioanalytical chemistry, laser materials, anti-counterfeit trademark, etc. In this paper, europium polymer fluorescence complex was synthesized by using phenanthroline as small molecule ligand, copolymer of acrylic and methyl methylacrylate as the polymer ligand. Relationship between fluorescence intensity of complexes and europium ion concentration was studied. It was found that fluorescence intensity of complexes and europiumion concentration were linear relationship about the concentration of Eu^3＋ at 1.25 × 10^-5 mol/L to 2.0 × 10^-4 mol/L, and the percentage of standard addition recycling was 98.6-101.3%. In this concentration range, Eu^3＋ concentration of complexes can be quantificationally measured.