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Luminescence and Electronic Spectral Studies of Some Synthesized Lanthanide Complexes Using Benzoic Acid Derivative and o-Phenanthroline

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Abstract

Lanthanide complexes of p-nitrobenzoic acid(p-NBA) and o-phenanthroline(o-phen) namely [Ln2(Phen)2(p-NBA)3(NO3)2].2H2O where, Ln = Sm(III),Tb(III),Dy(III) and [Eu2(Phen)2(p-NBA)3].4H2O were synthesized and further characterized by Elemental analysis, UV spectroscopy, IR spectroscopy, 1HNMR spectroscopy. Luminescence measurements were performed on all compounds in ethanolic solution. These complexes have showed narrow emission indicating that the organic ligands are better energy absorber and capable of transferring energy to the Ln (III) ion. Furthermore, we reported electronic spectral studies on [Eu2 (Phen)2 (p-NBA)3].4H2O in order to calculate following parameters, viz: Oscillator strength (f), Judd–Ofelt parameters Ωλ (λ = 2,4,6) and Radiative parameters. [Eu2 (o-Phen)2 (p-NBA)3].4H2O showed the strongest emission at 613 nm corresponds to 5D0→7F2 hypersensitive transition, this emission is very sensitive to the environment. However, the larger value of Ω2 supports the presence of the hypersensitive transition 5D0→7F2 which strictly depends on the nature of ligand. All electronic spectral parameters were calculated systemically.

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  1. Department of Chemistry, Dr. H. S. G.Vishwavidyalaya, Sagar, 470003, Madhya Pradesh, India

    Sneha Wankar & S. N. Limaye

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  1. Sneha Wankar
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  2. S. N. Limaye
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Correspondence to Sneha Wankar.

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Wankar, S., Limaye, S.N. Luminescence and Electronic Spectral Studies of Some Synthesized Lanthanide Complexes Using Benzoic Acid Derivative and o-Phenanthroline. J Fluoresc 25, 787–794 (2015). https://doi.org/10.1007/s10895-015-1573-6

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  • DOI: https://doi.org/10.1007/s10895-015-1573-6

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