Syntheses, characterization, biological activity and fluorescence properties of bis-(salicylaldehyde)-1,3-propylenediimine Schiff base ligand and its lanthanide complexes

Taha, Ziyad A.; Ajlouni, Abdulaziz M.; Al-Hassan, Khader A.; Hijazi, Ahmed K.; Faiq, Ari B.

doi:10.1016/j.saa.2011.06.018

Cited by 85 publications

(43 citation statements)

References 35 publications

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“…If the energy gap between the T L and the lowest resonance energy level of the Ln(III) ion is low then the back transfer from the lanthanide ion to the ligand can occur which reduces the intensity of the luminescence. Our results of the luminescence experiments were consistent with the proposed mechanism for intermolecular energy transfer 46,49 . For the case of La(III) has no 4f electron and no excited states below the T L , which is much higher in energy than the S L and T L of the ligands.…”

Section: Luminescence Spectroscopy Of Complexessupporting

confidence: 89%

SYNTHESIS, CHARACTERIZATION, LUMINESCENCE AND DNA BINDING PROPERTIES OF Ln (III)-SCHIFF BASE FAMILY

Babu

Rao

Lee

2017

J. Chil. Chem. Soc.

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Pentadentate Schiff base ligand(N,N-bis(2-hydroxy-1-naphthylidene) diethylenetriamine) (H 2 L) that exhibits a N 3 O 2 donor set. Five rare earth complexes lanthanide (III), praseodymium (III), neodymium(III), samarium(III)and europium (III) complexes are synthesized and characterized based on elemental analyses, molar conductance, infrared, ultraviolet, thermo gravimetric, X-ray powder diffraction and mass spectral studies. Molar conductivity data suggests that the complexes are 1:1 electrolytics. Infrared spectral data suggest that the ligand binds through two naptholic oxygen atoms, two azomethine nitrogen atoms and one primary amine. IR studies reveal that the complexes contain both coordinating and ionic nitrate ligands. Thermal decomposition studies indicate the presence of two nitrate ions and two water molecules in the inner coordination sphere. Eu 3+ and Sm 3+ complexes exhibit luminescence properties. Further, the binding properties of these complexes with calf-thymus DNA have been investigated using absorption spectrophotometry.

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Section: Luminescence Spectroscopy Of Complexessupporting

confidence: 89%

SYNTHESIS, CHARACTERIZATION, LUMINESCENCE AND DNA BINDING PROPERTIES OF Ln (III)-SCHIFF BASE FAMILY

Babu

Rao

Lee

2017

J. Chil. Chem. Soc.

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“…Moreover, the peak centered at 410 cm -1 in Fig. 2b which might be ascribed to m(Pr-N) vibration, confirm this occurred coordination mode [21]. It is generally accepted that the differences in the two bands |m 4 -m 1 | detects the different nitrate groups coordination modes to the praseodymium metal.…”

Section: Photocatalytic Testmentioning

confidence: 53%

“…Furthermore, the band centered at 573 cm -1 in Fig. 2b which can be ascribed to m(Pr-O) vibration, proved this coordination mode [21]. The m(C=N) band in the PS shifted to 1615 cm -1 .…”

Section: Photocatalytic Testmentioning

confidence: 60%

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Preparation of nanocrystalline praseodymium oxide with different shapes via a simple thermal decomposition route

Zinatloo-Ajabshir

Salavati‐Niasari

Hamadanian

2015

J Mater Sci: Mater Electron

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Present report describes the surfactant-free synthesis and characterization of nanocrystalline praseodymium oxide. For this purpose, praseodymium source ([PrL(NO 3 ) 2 ]NO 3 (L = (N,N 0 -bis(2 0 -hydroxyacetophenonimine)-o-dipropylene triamin) was prepared and its thermal decomposition was performed in at various temperatures in the 300-800°C. Results of this investigation demonstrate that praseodymium oxide with very uniform sphere-like shape, small grain size and pure cubic phase could be synthesized by thermal decomposition of the obtained praseodymium source at 600°C. FESEM, FT-IR, TGA, XRD, TEM, EDX, PL and UV-Vis were applied to study the formation of as-prepared nanoparticles and their structure, shape, elemental composition and optical characteristics. Moreover, the photocatalytic characteristics of as-synthesized praseodymium oxide were examined by photodegradation of b-naphthol under UV light illumination.

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“…The UV spectra of the complexes EuL 2 (NO 3 ) 3 ·2H 2 O and EuL 4 (NO 3 ) 3 ·2H 2 O show the characteristic absorption of their free ligands, which suggests that the coordination of europium ion does not have a significant influence on the π→π* and n→π* state energy, and also reveals that the absorption of the europium complexes is mainly attributed to the ligands, this maybe due to the f-f transitions are Laporte-forbidden and very weak in nature [19]. But there are certain changes both in frequencies and intensities.…”

Section: Uv Spectramentioning

confidence: 96%

Synthesis, Characterization and Properties of Novel Coumarin Derivatives and Their Europium Complexes

et al. 2015

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Seven novel coumarin derivatives derived from salicylaldehyde and phenol were synthesized and characterized by (1)H NMR and (13)C NMR spectra, mass spectra, infrared spectra and elemental analysis. Their corresponding Eu(III) complexes having general formula EuL(1-7)(NO3)3[Symbol: see text]2H2O were successfully prepared and characterized by elemental analysis, EDTA titrimetric, molar conductivity, UV-Vis, FT-IR and thermal performance studies. The luminescence properties, fluorescence quantum yields and the electrochemical properties of the title complexes were investigated. The results showed that the title complexes exhibited characteristic emissions of europium ions and possessed relatively good fluorescence quantum yields. The luminescence intensity of the complex with bromine-substituted group is the strongest among all the title complexes. The introduction of electron-withdrawing groups can increase the luminescence properties and fluorescence quantum yields, decrease the HOMO and LUMO energy levels of the title europium complexes, but electron-withdrawing group conversely. And these title complexes may possibly be useful for studying in luminescent materials field. Graphical Abstract Synthesis route of the ligands L (1-7).

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Syntheses, characterization, biological activity and fluorescence properties of bis-(salicylaldehyde)-1,3-propylenediimine Schiff base ligand and its lanthanide complexes

Cited by 85 publications

References 35 publications

SYNTHESIS, CHARACTERIZATION, LUMINESCENCE AND DNA BINDING PROPERTIES OF Ln (III)-SCHIFF BASE FAMILY

SYNTHESIS, CHARACTERIZATION, LUMINESCENCE AND DNA BINDING PROPERTIES OF Ln (III)-SCHIFF BASE FAMILY

Preparation of nanocrystalline praseodymium oxide with different shapes via a simple thermal decomposition route

Synthesis, Characterization and Properties of Novel Coumarin Derivatives and Their Europium Complexes

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