“配位诱导”铕(III)/聚乙二醇-聚丙烯酸嵌段聚合物胶束的研究

Study on the Formation of Eu(III)/PEO-b-PAA Micelles by Coordinated Induction

研究了稀土金属铕(Ⅲ)-联吡啶(bpy)有机配合物与双亲水性两嵌段聚合物聚乙二醇-聚丙烯酸(PEO113-b-PAA82)在不同溶剂中[V(水)∶V(乙醇)=7.5∶1,5∶1]通过“配位诱导”作用在水中形成配合物胶束的过程.荧光光谱结果表明Eu(Ⅲ)分别与bpy和PAA发生配位,Eu(Ⅲ)与PAA中羧基的配位使聚合物发生交联在水性溶剂中形成了配合物胶束.用动态激光光散射(DLS),原子力显微镜(AFM)和透射电镜(TEM)等测试方法对配合物胶束的形态及尺寸进行了表征.

Through coordination-induced method, the process of micellization via rare earth metal Eu（Ⅲ）- bipyridine （bpy） with block copolymer of PEO-b-PAA （PEO113-b-PAA82） in different solvents [V（H2O） ： V（alcohol）=7.5 ： 1, 5 ： 1] has been studied. Fluorescence spectroscopy showed that Eu（Ⅲ）/bipyridine and Eu（Ⅲ）/carboxyl of PAA could form coordinative complex, respectively. The coordinated micelles were formed through the coordination of Eu（Ⅲ） and carboxyl of PAA in water. The morphologies and sizes of the micelles were characterized by dynamic laser scattering （DLS）, atomic force microscopy （AFM） and transmission electron microscopy （TEM） and so on.