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Vol. 34 No. 7 (2022): Vol 34 Issue 7, 2022

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Reinforced Optical Properties of Sm3+ Complexes with β-Hydroxyketone Ligand by Using Methylated Auxiliary Ligands

https://doi.org/10.14233/ajchem.2022.23688
Poonam
Department of Chemistry, Maharshi Dayanand University, Rohtak-124001, India
Savita Khatri
Department of Chemistry, University Institute of Engineering & Technology, Maharshi Dayanand University, Rohtak-124001, India
Manoj Kumar
Department of Chemistry, University Institute of Engineering & Technology, Maharshi Dayanand University, Rohtak-124001, India
Seema Bhayana
Department of Chemistry, University Institute of Engineering & Technology, Maharshi Dayanand University, Rohtak-124001, India
S.P. Khatkar
Department of Chemistry, Maharshi Dayanand University, Rohtak-124001, India
V.B. Taxak
Department of Chemistry, Maharshi Dayanand University, Rohtak-124001, India
Rajesh Kumar
Department of Chemistry, University Institute of Engineering & Technology, Maharshi Dayanand University, Rohtak-124001, India

Corresponding Author(s) : Rajesh Kumar

lather_rajesh@yahoo.com

Asian Journal of Chemistry, Vol. 34 No. 7 (2022): Vol 34 Issue 7, 2022

Abstract

Solution precipitation method was used to synthesize two avant-grade ternary complexes of Sm3+ ion with 2-hydroxy-4,6-dimethoxy-acetophenone (HDMA) as prime ligand and 5,6-dimethyl-1,10-phenathroline (dmphen) as auxillary ligand. Characterization of these complexes was accomplished by means of elemental analysis, 1H NMR, FT-IR and photoluminescence spectroscopy. Emission spectra recorded at ambient temperature, displayed sharp emission bands at 564, 600 and 646 nm attributed to 4G5/2®6Hj (j = 5/2, 7/2, 9/2) f-f transitions of metal ion. The decent decay time of luminescence and superior colour purity reported in complexes. The correlated colour temperature of these complexes established them as warm light source. The quantum yield was also evaluated for both complexes. HDMA alone could sensitize Sm3+ ion proficiently but the inclusion of auxillary ligands neocuproine (neo) or 5,6-dimethyl-1,10-phenathroline (dmphen) resulted in reinforced optical properties. The results of emission spectra illustrated that these ternary complexes can be one of the most promising substances for fabrication of display devices.

Keywords

Auxiliary ligands Reinforced optical properties Quantum yield β-Hydroxyketone Sm3 complexes
Poonam, ., Khatri, S., Kumar, M., Bhayana, S., Khatkar, S., Taxak, V., & Kumar, R. (2022). Reinforced Optical Properties of Sm3+ Complexes with β-Hydroxyketone Ligand by Using Methylated Auxiliary Ligands. Asian Journal of Chemistry, 34(7), 1749–1754. https://doi.org/10.14233/ajchem.2022.23688
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