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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Lis, Stefan
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2020Surface Modification of Luminescent LnIII Fluoride Core–Shell Nanoparticles with Acetylsalicylic acid (Aspirin): Synthesis, Spectroscopic and in Vitro Hemocompatibility Studiescitations
- 2019Synthesis of highly luminescent nanocomposite LaF3:Ln3+/Q-dots-CdTe system, exhibiting tunable red-to-green emissioncitations
- 2016Luminescent cellulose fibers modified with cerium fluoride doped with terbium particlescitations
- 2016Spectroscopic, structural and in vitro cytotoxicity evaluation of luminescent, lanthanide doped core@shell nanomaterials GdVO<inf>4</inf>:Eu<sup>3+</sup>5%@SiO<inf>2</inf>@NH<inf>2</inf>citations
- 2015Synthesis, structural and spectroscopic studies on GdBO<inf>3</inf>:Yb<sup>3+</sup>/Tb<sup>3+</sup>@SiO<inf>2</inf> core-shell nanostructurescitations
- 2015Synthesis, characterization, and cytotoxicity in human erythrocytes of multifunctional, magnetic, and luminescent nanocrystalline rare earth fluoridescitations
- 2014Revised crystal structure and luminescent properties of gadolinium oxyfluoride Gd<inf>4</inf>O<inf>3</inf>F<inf>6</inf> doped with Eu<sup>3+</sup> ionscitations
- 2013New complexes of cobalt(II) ions with pyridinecarboxylic acid N-oxides and 4,4′-bypcitations
- 2013Structural, spectroscopic and cytotoxicity studies of TbF <inf>3</inf>@CeF<inf>3</inf> and TbF<inf>3</inf>@CeF<inf>3</inf>@SiO<inf>2</inf> nanocrystalscitations
- 2013Hydrothermal synthesis and structural and spectroscopic properties of the new triclinic form of GdBO<inf>3</inf>:Eu<sup>3+</sup> nanocrystalscitations
- 2012Luminescent cellulose fibers activated by Eu <sup>3+</sup>-doped nanoparticlescitations
- 2012Tunable luminescence of Sr <inf>2</inf>CeO <inf>4</inf>:M <sup>2+</sup> (M = Ca, Mg, Ba, Zn) and Sr <inf>2</inf>CeO <inf>4</inf>:Ln <sup>3+</sup> (Ln = Eu, Dy, Tm) nanophosphorscitations
- 2012Synthesis, complexation studies and structural characterization of d and f metal ion complexes with 4-chloroquinaldinic acid N-oxidecitations
- 2012Magnetic and luminescent hybrid nanomaterial based on Fe <inf>3</inf>O <inf>4</inf> nanocrystals and GdPO <inf>4</inf>:Eu <sup>3+</sup> nanoneedlescitations
- 2011Synthesis, spectroscopic and structural properties of uranyl complexes based on bipyridine N-oxide ligandscitations
- 2011Structural and spectroscopic properties of LaOF:Eu<sup>3+</sup> nanocrystals prepared by the sol-gel Pechini methodcitations
- 2002Luminescence studies of Eu(III) mixed ligand complexescitations
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article
Luminescence studies of Eu(III) mixed ligand complexes
Abstract
<p>A series of europium(III) mixed ligand complexes, Ln/L/X based on pyridine carboxylic acid N-oxides, L, plus 2,2′-bipyridine (bipy) or 1,10-phenanthroline (phen), X, have been studied. The complexes were characterized using Eu luminescence (conventional and laser-induced) spectroscopy. A number of N-oxide ligand designs, including mono- and dicarboxylic acids and their derivatives (aryl-substituted), having various steric groups, have been tested with the main goal of optimizing the luminescence properties under various experimental conditions. Potentiometric titration of acid N-oxides have been carried out in aqueous solution in order to determine their pK<sub>a</sub> and the pH values, important for complexation conditions. Based on the Eu(III) luminescence lifetime measurements, hydration numbers of the Eu(III) complexes have been obtained, which evidenced the formation of binary EuL and EuL<sub>2</sub> complexes and mixed ligand EuL<sub>2</sub>X complexes. The results suggest that in ternary complex formation the steric requirement of the secondary ligand play an important role. The results of these studies lead us to achieve a better understanding of the factors, as aryl substituted groups (e.g. Br, NO<sub>2</sub>, NH<sub>2</sub>, CH<sub>3</sub>, OCH<sub>3</sub>) and a kind of solvent, influencing the luminescence intensity and lifetime of the Eu(III) complexes studied. © 2002 Elsevier Science B.V. All rights reserved.</p>