Synthesis, characterization and fluorescence of lanthanide Schiff-base complexes
- 22 August 2007
- journal article
- research article
- Published by Taylor & Francis Ltd in Journal of Coordination Chemistry
- Vol. 60 (18), 1973-1982
- https://doi.org/10.1080/00958970701217602
Abstract
Six new lanthanide Schiff-base complexes were synthesized by reactions of hydrated lanthanide nitrates with H2L (H2L = N,N′-bis(salicylidene)-1,2-cyclohexanediamine) and characterized by elemental analysis, DTA–TG, IR, UV and luminescence spectra. The microanalyses and spectroscopic analyses indicate a 1D polymeric structure with the formula of [Ln(H2L)(NO3)3(MeOH)2] n [Ln = La (1), Ce (2), Pr (3), Sm (4), Gd (5) & Dy (6)]. The fluorescence spectrum of complex 4 exhibited Sm3+ centered, Schiff-base sensitized orange fluorescence, indicating that energy levels of the triplet state of H2L match closely to the lowest excited state (4G5/2) of Sm3+ ion.Keywords
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