Complexation of Eu(III) with Dibutyl Phosphate and Tributyl Phosphate

Probing of the local environment and calculation of J.O. parameters for Eu3+ CMPO functionalized pillararene complexes by time resolved fluorescence spectroscopy

“…Thus the high intensity of 5 D 0 -7 F 2 revealed the asymmetric environment of Eu 3 þ in the complex and it was quantified in terms of asymmetric factor (A) as described in Refs. [42,43].…”

Luminescence investigation on Eu–pillar[5]arene-based diglycolamide (DGA) complexes: Nature of the complex, Judd–Ofelt calculations and effect of ligand structure

“…The high intensity of the 5 D 0 -7 F 2 transition reveals that the local environment around the Eu 3+ ion is highly asymmetric with respect to the inversion symmetry. It can be quantified by the asymmetry factor using the equation below [22]. A = I ( 5 D 0 -7 F 2 ) / I( 5 D 0 -7 F 1 )…”

Fluorescence studies of metal complexes in synergistic extraction systems combining dibutyl phosphoric acid and tri-n-butyl phosphate

“…At low acid, there is a significant change in morphology in the largest peak at 612 nm. This has been observed by Zhang, et al in varying nitric acid concentrations for the complexation of europium with HDBP alone [19]. This is likely due to a change in the complexes formed in the organic phase as HDBP is an efficient extractant at low acid and the mixture of TBP/HDBP may interact to enhance the extraction, as indicated in the distribution data for low acid.…”