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.

Key words: DYSPROSIUM, URUSHIOL, FLUORESCENCE QUENCHER, ELECTROCHEMICAL SYNT, FLUORIMETRIC ANALYSIS, FT, IR, ELEMENTAL ANALYSIS, XPS, DTA