Self-Assembled Film of Tb3+ and Poly(3-Thiophene Acetic Acid) via Layer-by-Layer Complexation Technique and Its Photoluminescence

稀土学报(英文版), 2002, 20(5): 333-338.

1.State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, China

2.State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, China

3.State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, China

4.State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, China

基金项目: Project sopprted by the State Key Program of Fundamental Research on Rare Earth Functional Materials(G 1998061308,2001,CCD04300) 国家自然科学基金(20023005)

Self-Assembled Film of Tb3+ and Poly(3-Thiophene Acetic Acid) via Layer-by-Layer Complexation Technique and Its Photoluminescence

Keywords： rare earths

The layer-by-layer complexation technique of polymer and metal ion was successfully utilized to fabricate the ultrathin multilayer film of poly(3-thiophene acetic acid (PTAA) and Tb3+ ion by dipping the substrates alternatively in polymer and Tb3+ ion aqueous solutions. UV-vis measurement revealed that the absorbance has linearity with the bilayer number from layer to layer and the X-ray photoelectron spectrum (XPS) confirmed the existence of Tb3+ ion. The pH of both the polymer and TbCl3 solutions influence the thickness dramatically while the concentration of the solutions is not so sensitive. The luminescent spectrum of the complex film shows the characteristic emission of Tb3+ ion as well as the ligand indicating the formation of the complex.

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Self-Assembled Film of Tb3+ and Poly(3-Thiophene Acetic Acid) via Layer-by-Layer Complexation Technique and Its Photoluminescence

参考文献