Coordination polymer (Tb(III)-TTA-EPU) was formed at pH = 10.2 by reaction of EPU (M_w = 3160) with metalorganic complex NaTb (TTA)_4 prepared from terbium chloride isopropyl alcohol solution and thienyltrifluroacetone. The coordination polymer was characterized by FT-IR, XPS. Elemental analysis and AES indicate that each Tb~(3+) ion is coordinated by three TTA~- ions and two hydroxyls from one unit in the EPU molecule, making the coordination polymer cross-linked further. The results of DMTA show that the title polymer is insoluble in most of organic solvents and has a high glass transition temperature and high thermal resistance. The coordination polymer shows intense fluorescence at 545 nm under UV excitation at room temperature, which is attributed to the ~5D_4 → ~7F_5 transition of Tb~(3+) ions. The effects. of solvents and pH on the fluorescence intensity were investigated. The fluorescence spectrum indicates that the coordination polymer has good fluorescence properties at pH = 10.2.

Key words: TERBIUM, 2-THENOYL-TRIFLUORO-ACETONE, URUSHIOL, ELECTROCHEMISTRY, POLYMERIZATION, IR, XPS