Syntheses, crystal structure and luminescence property of novel 4f-3d heterometallic one-dimensional coordination polymers

Two 4f-3d heterometallic one-dimensional coordination polymers [ZnEu2(Fur)(8)(.)2H(2)O]n and [ZnTb2(Fur)(8)(.)2H(2)O](n) (HFur = alpha-furancarboxylic acid) with good solubility were synthesized and characterized by infrared spectra, X-ray single crystal and powder diffractions, thermogravimetric and differential thermal analysis, and excitation and emission spectra. The X-ray diffraction analyses revealed that the two complexes are isomorphous. The Zn and Ln atoms are linked into one-dimensional chains by furancarboxylate ligands and the metal atoms are arranged in the (...) Zn (...) Ln (...) Ln (...) Zn (...) Ln (...) Ln (...) order. Under the excitation of UV light, these coordination polymers emit intense characteristic luminescence of Eu3+ or Tb3+ ion, respectively. The influence of Zn2+ ion on the luminescence properties was also discussed here. (c) 2006 Elsevier Ltd. All rights reserved.