Radiationless transitions in trivalent lanthanide ions embedded in solids

1984 ◽  
Vol 93 (6) ◽  
pp. 905-916
Author(s):  
Deb Shankar Ray ◽  
Mihir Chowdhury
Keyword(s):  
Lanthanide Ions ◽  
Radiationless Transitions ◽  
Trivalent Lanthanide

Bond-length distributions for ions bonded to oxygen: Results for the lanthanides and actinides and discussion of the f-block contraction

2017 ◽  
Author(s):  
Olivier Charles Gagné
Keyword(s):  
Bond Length ◽  
Coordination Number ◽  
Lanthanide Ions ◽  
Lanthanide Contraction ◽  
Trivalent Lanthanide ◽  
Actinide Ions

Bond-length distributions have been examined for eighty-four configurations of the lanthanide ions and twenty-two configurations of the actinide ions bonded to oxygen. The lanthanide contraction for the trivalent lanthanide ions bonded to O<sup>2-</sup> is shown to vary as a function of coordination number and to diminish in scale with increasing coordination number.

A fluorescence study on the complexation of Sm(iii), Eu(iii) and Tb(iii) with tetraalkyldiglycolamides (TRDGA) in aqueous solution, in solid state, and in solvent extraction

2016 ◽  
Vol 45 (46) ◽  
pp. 18484-18493 ◽  
Author(s):  
Fei Kou ◽  
Suliang Yang ◽  
Hongjuan Qian ◽  
Lihua Zhang ◽  
Christine M. Beavers ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Solid State ◽  
Solvent Extraction ◽  
Lanthanide Ions ◽  
Tridentate Ligand ◽  
Fluorescence Study ◽  
Trivalent Lanthanide

Trivalent lanthanide ions form 1 : 1, 1 : 2, and 1 : 3 complexes with tridentate ligand TMDGA in 1 M H/NaNO3 and form 1 : 3 extracted complexes with DMDODGA during solvent extraction.

Synthesis and Luminescence Properties of Lanthanide (III)-Doped YF3 Nanoparticles

2006 ◽  
Vol 6 (3) ◽  
pp. 830-836 ◽  
Author(s):  
Yang Cui ◽  
Xianping Fan ◽  
Zhanglian Hong ◽  
Minquan Wang
Keyword(s):  
Upconversion Luminescence ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Lanthanide Ions ◽  
Luminescence Properties ◽  
Synthesis Process ◽  
Second Phase ◽  
Trivalent Lanthanide ◽  
Xrd Patterns ◽  
Luminescence Concentration Quenching

Synthesis process and luminescence properties of trivalent lanthanide ions (Ln3+) doped YF3 nanoparticles have been investigated. To synthesis Ln3+-doped YF3 nanoparticles, the mixture of (YCl3·nH2O + LnCl3·nH2O), and NH4F was hydrothermal treated at 180 °C in a Teflon-liner auto-clave or heated at higher temperatures (400 °C ∼ 600 °C) in a stove. The XRD patterns showed that the Ln3+-doped orthorhombic YF3 nanoparticles with no second phase have been prepared. The solid solution Y1−xEuxF3 (x = 0 ∼ 0.4) nanoparticles have been synthesized. The luminescence concentration quenching resulted from resonance energy transfer between neighboring Eu3+ ions occurred at higher Eu3+ concentrations (30 mol%). The upconversion luminescence of Er3+−Yb3+ codoped YF3 nanoparticles under 980 nm excitation has also been observed. With increase of heated temperature, the size of the Er3+−Yb3+ codoped YF3 nanoparticles increased gradually, and upconversion luminescence intensity increased significantly.

scholarly journals New Complexes of Pr(III), Sm(III), Gd(lll), Gd(III), La(III) 1-(2-Benzthyazolyl)-3-methyl-4-azo-(4-nitrophenyl)-Pyrazolyn-5-one

1998 ◽  
Vol 6 (6) ◽  
pp. 53-62
Author(s):  
Anca Emandi ◽  
Mariana Balasoiu ◽  
Tudor Rosu
Keyword(s):  
Molecular Weight ◽  
Molar Conductance ◽  
Lanthanide Ions ◽  
X Ray ◽  
Visible Spectra ◽  
Elemental Analyses ◽  
Trivalent Lanthanide

1-(2-Benzthyazolyl)-3-methyl-4-azo-(4-nitrophenyl)-Pyrazolyn-5-one (HL) possesses a chelating behavior. Its chelates with a number of trivalent lanthanide ions Pr(III), Sm(III),Gd(III), Ho(III), La(III) of the type Na3[Ln(L)2(OH)4] have been isolated and characterized on the basis of their elemental analyses, IR and visible spectra, magnetic and molar conductance studies, thermal and X-ray analysis and molecular weight determinations. All chelates have a monomeric octa-coordinated stn1cture and square antiprismatic (C2) symmetry.

scholarly journals Five-fold twinned β-PbF2 nanocrystals in oxyfluoride glass ceramics

RSC Advances ◽  
2018 ◽  
Vol 8 (71) ◽  
pp. 40787-40793 ◽  
Author(s):  
Yuao Guo ◽  
Lijuan Zhao ◽  
Yuting Fu ◽  
Pan Dong ◽  
Liying Guo ◽  
...  
Keyword(s):  
Glass Ceramics ◽  
Lanthanide Ions ◽  
X Ray Diffraction ◽  
Oxyfluoride Glass ◽  
X Ray ◽  
Trivalent Lanthanide ◽  
Quenching Method

Oxyfluoride glass ceramics (GCs) doped with trivalent lanthanide ions (Ln3+) have been prepared using a conventional melting–quenching method and studied by X-ray diffraction (XRD).

Trivalent lanthanide ions: versatile coordination centers with unique spectroscopic and magnetic properties

2000 ◽  
Vol 303-304 ◽  
pp. 66-74 ◽  
Author(s):  
Jean-Claude G. Bünzli ◽  
Nicolas André ◽  
Mourad Elhabiri ◽  
Gilles Muller ◽  
Claude Piguet
Keyword(s):  
Magnetic Properties ◽  
Lanthanide Ions ◽  
Trivalent Lanthanide

X-ray Absorption and Magnetic Studies of Trivalent Lanthanide Ions Sorbed on Pristine and Phosphate-Modified Boehmite Surfaces

Langmuir ◽  
2002 ◽  
Vol 18 (26) ◽  
pp. 10128-10136 ◽  
Author(s):  
Soh-joung Yoon ◽  
Philip A. Helmke ◽  
James E. Amonette ◽  
William F. Bleam
Keyword(s):  
Lanthanide Ions ◽  
Magnetic Studies ◽  
X Ray ◽  
Trivalent Lanthanide ◽  
X Ray Absorption
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