电聚合漆酚镝配位聚合物研究

A Study on Coordination Polymer of Dysprosium-electropolyurushiol

根据漆酚结构特点和稀土元素的电子结构特殊性 ,研究电聚合漆酚 (EPU)与氯化镝反应生成配位聚合物 (EPU Dy3 + ) .采用FT IR ,元素分析 ,XPS ,荧光光谱 ,DMTA ,DTA TG等手段对其进行表征 ,探讨其结构与性质 .元素分析等测定结果证明了每个Dy3 + 分别与EPU分子中 3个链节单元的羟基发生配位 ,从而得到配位聚合物的结构 ,证实了配合物中存在着Dy3 + 与EPU的配位作用 ,并引起进一步交联 ,且镝含量达 13 18% .DMTA ,DTA TG分析结果表明玻璃化转变温度和耐热性能均有所提高 .荧光光谱表明 ,EPU对Dy3 + 不起敏化作用 ,EPU与Dy3 +

According to the structural characteristics of urushiol and particular electronic structure of rare earth elements, the dysprosium-electropolyurushiol coordination polymer obtained by the reaction of dysprosium chloride with electropolyurushiol was studied. The coordination polymer was characterized by FT-IR, elemental analysis, XPS, fluorescence spectrum, DMTA and DTA-TG. Its composition and structure were identified. The results of elemental analysis indicate that each Dy3+ ion is coordinated by hydroxyls from three unit in the EPU molecule. It shows that there is certain coordination between Dy3+ and electropolyurushiol (EPU) in the coordination polymer, which further leads to cross-linking. Dy3+ content in the polymer reaches up to 13.18%. DMTA and DTA-TG analyses show that the glass transition temperature and heat resistance are considerably greater than those of EPU. The fluorescence spectrum shows that electropolyurushiol has no-sensitization effect to dysprosium and the coordination makes dysprosium characteristic fluorescence quenched.