Recent advances in acylpyrazolone metal complexes and their potential applications

Spectroscopy, Crystal and Molecular Structures of New 4-Acylpyrazolone Dinitrophenylhydrazones

“…They are synthesized easily by way of a condensation reaction between a carbonyl group (aldehydes or ketones) and an amine in a basic system with the elimination of water molecules as a by-product [3,4]. Acylpyrazolones have been reported to be a very useful chemical compound [5][6][7][8] and they form interesting Schiff bases on reaction with different amine groups by way of functional group substitution and synthetic modifications [9,10]. Their good chelating potentials towards transition metal ions have made them useful analytical reagents.…”

Photophysical properties and computational study of newly synthesized lanthanide complexes with N-(2-carboxyphenyl)salicylideneimine Schiff base ligand

“…The Ln-LH 2 complexes have higher DPPH-RSA compared to that of LH 2 ligand. Neither LH 2 nor Ln-LH2 complexes have antimicrobial against the tested bacteria.…”

“…The potential of lanthanide complexes {especially Ln(III): Sm, Tb, Eu and Dy} relies on the good optical properties of Ln(III) ions such as large Stokes shifts, narrow emission bandwidths, long-lived luminescence and high emission quantum yield [1,2]. Promising applications may be envisaged, such as biomedical actuators and sensors, functional materials such as lasers materials, structural and analytical luminescent probes, light emitting diodes and bioanalytical assays such as immunoassays, nucleic acid hybridizations and enzyme assays [1,2].…”

“…The luminescence intensity is highly influenced by the efficiency of light harvesting by the ligand and energy transfer from the ligand to Ln(III) ions through intersystem crossing (S 1 → T 1 ) and intersystem energy-transfer processes (T 1 → Ln*) [1,2]. Therefore, it is significant to design and synthesize suitable ligands with high absorption cross sections and low triplet-state energy level that lies above the emitting levels of the lanthanide ions.…”

Substituted 4-Acyl-5-methyl-2-phenyl-pyrazol-3-one-phenylhydrazones with Antioxidant Properties: X-Ray Crystal and Spectroscopic Studies

“…Similarly, these compounds mostly organic/inorganic based, as ligands or/and their metal complexes, are obtained through careful functional groups modifications by way of formulation, which invariably affects their properties and influence specific applications [4][5][6]. Acylpyrazolone derivatives, mostly known for their use as analytical reagents in the extraction and separation of various metal ions, made possible because of their chelating properties, are a group of bidentate diketones that have been well researched [7][8][9][10].…”