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Vol. 27 No. 12 (2015): Vol 27 Issue 12

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Synthesis, Structure and Luminescent Properties of New Ce(III), Dy(III), Ho(III) and Tm(III) Complexes with 2-(1H-1,2,4-Triazol-3-yl)pyridine

https://doi.org/10.14233/ajchem.2015.19178
Petronela Horlescu
Faculty of Chemical Engineering and Environmental Protection, Gh. Asachi Technical University, D. Mangeron 73 Ave., 700050 Iasi, Romania
Corneliu S. Stan
Faculty of Chemical Engineering and Environmental Protection, Gh. Asachi Technical University, D. Mangeron 73 Ave., 700050 Iasi, Romania
Daniel Sutiman
Faculty of Chemical Engineering and Environmental Protection, Gh. Asachi Technical University, D. Mangeron 73 Ave., 700050 Iasi, Romania
Cristian Peptu
Petru Poni Institute of Macromolecular Chemistry of Romanian Academy Grigore Ghica Voda 41A Alley, 700487 Iasi, Romania
Carmen Mita
Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, 11 Carol I Bd., 700506 Iasi, Romania

Corresponding Author(s) : Corneliu S. Stan

stancs@tuiasi.ro

Asian Journal of Chemistry, Vol. 27 No. 12 (2015): Vol 27 Issue 12

Abstract

In this work, four new complexes of Ce3+, Dy3+, Ho3+ and Tm3+ with 2-(1H-1,2,4-triazol-3-yl)pyridine (Htzp) were synthesized and further studied. The complexes were prepared at 1/3 metal to ligand ratio and elemental analysis, mass spectrometry, thermal analysis, FT-IR and powder-XRD methods were used to investigate their structural configuration. Data obtained through analysis revealed the formation of the complexes with the general formula [Ln(tzp)3·(H2O)3] where Ln = Ce3+, Dy3+, Ho3+, Tm3+. Fluorescence spectroscopy revealed in case of Dy3+ complex specific metal centered narrow band emissions from the f-f transitions within 4f orbitals, while in case of Ce3+ complex a wide band emission was recorded most probable due to the heavy atom effect over the excited intra ligand states.

Keywords

Lanthanide complexes Triazol-pyridine Metal centered luminescence
Horlescu, P., S. Stan, C., Sutiman, D., Peptu, C., & Mita, C. (2015). Synthesis, Structure and Luminescent Properties of New Ce(III), Dy(III), Ho(III) and Tm(III) Complexes with 2-(1H-1,2,4-Triazol-3-yl)pyridine. Asian Journal of Chemistry, 27(12), 4461–4466. https://doi.org/10.14233/ajchem.2015.19178
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