Startseite Synthesis and photophysical properties of new Ln(III) (Ln = Eu(III), Gd(III), or Tb(III)) complexes of 1-amidino-O-methylurea
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Synthesis and photophysical properties of new Ln(III) (Ln = Eu(III), Gd(III), or Tb(III)) complexes of 1-amidino-O-methylurea

  • L. Singh EMAIL logo und R. Singh
Veröffentlicht/Copyright: 30. Oktober 2013
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Chemical Papers
Aus der Zeitschrift Chemical Papers Band 68 Heft 2

Abstract

Three new solid lanthanide(III) complexes, [Ln(1-AMUH)3] · (NO3)3 (1-AMUH = 1-amidino-O-methylurea; Ln = Eu(III), Gd(III), or Tb(III)) were synthesised and characterised by elemental analysis, infrared spectra, magnetic moment measurement, and electron paramagnetic resonance (EPR) spectra for Gd(III) complex. The formation of lanthanide(III) complexes is confirmed by the spectroscopic studies. The photophysical properties of Gd(III), Eu(III), and Tb(III) complexes in solid state were investigated. The Tb(III) complex exhibits the strongest green emission at 543 nm and the Eu(III) complex shows a red emission at 615 nm while the Gd(III) complex shows a weak emission band at 303 nm. Under excitation with UV light, these complexes exhibited an emission characteristic of central metal ions. The powder EPR spectrum of the Gd(III) complex at 300 K exhibits a single broad band with g = 2.025. The bi-exponential nature of the decay lifetime curve is observed in the Eu(III) and Tb(III) complexes. The results reveal them to have potential as luminescent materials.

Keywords: lanthanide complexes; luminescence; decay lifetime; 1-amidino-O-methylurea

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Published Online: 2013-10-30
Published in Print: 2014-2-1

© 2013 Institute of Chemistry, Slovak Academy of Sciences

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https://doi.org/10.2478/s11696-013-0446-1
Schlagwörter für diesen Artikel
lanthanide complexes; luminescence; decay lifetime; 1-amidino-O-methylurea

Artikel in diesem Heft

  1. Synthesis and characterisation of a novel bi-nuclear copper2+ complex and its application as electrode-modifying agent for simultaneous voltammetric determination of dopamine and ascorbic acid
  2. Synthesis of ethyl-6-aminohexanoate from caprolactam and ethanol in near-critical water
  3. Vanadium dodecylamino phosphate: A novel efficient catalyst for synthesis of polyhydroquinolines
  4. Modelling and experimental validation of enantioseparation of racemic phenylalanine via a hollow fibre-supported liquid membrane
  5. Influence of operating conditions on performance of ceramic membrane used for water treatment
  6. Mercury associated with size-fractionated urban particulate matter: three years of sampling in Prague, Czech Republic
  7. Chemical composition and antioxidant activity of sulphated polysaccharides extracted from Fucus vesiculosus using different hydrothermal processes
  8. A new organically templated magnesium sulfate: structure, spectroscopic analysis, and thermal behaviour
  9. Synthesis, characterization and photoluminescence properties of Ce3+-doped ZnO-nanophosphors
  10. Synthesis and photophysical properties of new Ln(III) (Ln = Eu(III), Gd(III), or Tb(III)) complexes of 1-amidino-O-methylurea
  11. Polycarbonate-based polyurethane elastomers: temperature-dependence of tensile properties
  12. Synthesis of a disulfide functionalized diacetylenic derivative of carbazole as building-block of polymerizable self-assembled monolayers
  13. Properties of poly(lactic acid-co-glycolic acid) film modified by blending with polyurethane
  14. Determination of 10B in lymphoma human cells after boron carrier treatment: comparison of 10BPA and immuno-nanoparticles
  15. Molecular modelling and spectral investigation of some triphenyltetrazolium chloride derivatives
  16. X-ray molecular structure and theoretical study of 1,4-bis[2-cyano-2-(o-pyridyl)ethenyl]benzene
  17. 1,3-Dipolar cycloaddition between substituted phenyl azide and 2,3-dihydrofuran
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