Europium(III) luminescence excitation spectroscopy. Quantitive correlation between the total charge on the ligands and the 7F0 .fwdarw. 5D0 transition frequency in europium(III) complexes

Albin, Michael; Horrocks, William DeW.

doi:10.1021/ic00200a020

Cited by 165 publications

(97 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They analyzed the effects of variation of the crystal-field parameters on the energy gap between the 7 F 0 and 5 D 0 levels [716]. ) and the formal charge p on the ligands [723]: (12) The authors concluded that the observed nephelauxetic effect was not due to the covalency of the Eu-ligand bond, but rather to a decrease of the effective nuclear charge of Eu 3+ upon binding to negatively charged ligands. The relationship more or less holds for ligands in which most of the donor atoms are negatively charged, but there are many violations of this relationship for complexes with neutral ligands.…”

Section: Nephelauxetic Effectmentioning

confidence: 99%

Interpretation of europium(III) spectra

Binnemans

2015

Coordination Chemistry Reviews

2,442

108

1,912

View full text Add to dashboard Cite

Section: Nephelauxetic Effectmentioning

confidence: 99%

Interpretation of europium(III) spectra

Binnemans

2015

Coordination Chemistry Reviews

2,442

108

1,912

View full text Add to dashboard Cite

“…15 The eight-fold MoO 4 2− -coordination must be inducing a strong splitting of Eu 3+ 's crystal field levels. 26,42 The emission spectra of the species allow additional insight into the local coordination of the trivalent ions in the solid solution. Emission spectra are shown in The powder spectra do not allow an unambiguous point symmetry determination, but the observed splitting pattern seems to be in disagreement with both, D 2d and S 4 point symmetry, for the Ca 2+ site in powellite.…”

Section: Trlfs Of Powder Sample Solid Solution Seriesmentioning

confidence: 99%

Characterization of powellite-based solid solutions by site-selective time resolved laser fluorescence spectroscopy

et al. 2013

View full text Add to dashboard Cite

We present a comprehensive study of the solid solution system Ca 2 (MoO 4 ) 2 -NaGd(MoO 4 ) 2 on the molecular scale, by means of site-selective time resolved laser fluorescence spectroscopy (TRLFS). Eu 3+ is used as a trace fluorescent probe, homogeneously substituting for Gd 3+ in the solid solution crystal structure. Site-selective TRLFS of a series of polycrystalline samples covering the whole composition range of the solid solution series from 10% substitution of Ca 2+ to the NaGd end-member reveals it to be homogeneous throughout the whole range. The trivalent ions are incorporated into the powellite structure in only one coordination environment, which exhibits a very strong ligand-metal interaction. Polarizationdependent measurements of a single crystal of NaGd(Eu)(MoO 4 ) 2 identify the coordination geometry to be of C 2v point symmetry. The S 4 symmetry of the Ca site within the powellite lattice can be transformed into C 2v assuming minor motion in the first coordination sphere.

show abstract

“…Evidence that A13+ directly influences the Er3+ bonding environment is found in the small shift of the more intense peak to shorter wavelengths. This shift suggests that Er-0 bonding is more ionic in the presence of A13+ (Albin and Horrocks, 1985). containing Yb3+.…”

Section: Fluorescence Lifetimes Of the Er3+mentioning

confidence: 94%