Luminescent Properties of Phosphonate Ester-Supported Neodymium(III) Nitrate and Chloride Complexes

Gerstel, Miriam; Koehne, Ingo; Reithmaier, Johann Peter; Pietschnig, Rudolf; Benyoucef, M.

doi:10.3390/molecules28010048

Cited by 3 publications

(1 citation statement)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Phosphine oxides attracted great attention as promising extractants for 4(5)f-metal ions [ 15 , 16 , 17 , 18 , 19 , 20 ]. The chemistry of 1,3-bis-phosphine oxides is rapidly developing, which is mainly because bis(phosphine oxides) are efficient ligands allowing diverse complexation with lanthanide and calcium ions [ 21 , 22 , 23 , 24 , 25 , 26 ]. The great impact of the structure of the group linking two phosphine oxides on the complexation mode is worth noting.…”

Section: Introductionmentioning

confidence: 99%

Phosphineoxide-Chelated Europium(III) Nanoparticles for Ceftriaxone Detection

et al. 2023

View full text Add to dashboard Cite

The present work demonstrates the optimization of the ligand structure in the series of bis(phosphine oxide) and β-ketophosphine oxide representatives for efficient coordination of Tb3+ and Eu3+ ions with the formation of the complexes exhibiting high Tb3+- and Eu3+-centered luminescence. The analysis of the stoichiometry and structure of the lanthanide complexes obtained using the XRD method reveals the great impact of the bridging group nature between two phosphine oxide moieties on the coordination mode of the ligands with Tb3+ and Eu3+ ions. The bridging imido-group facilitates the deprotonation of the imido- bis(phosphine oxide) ligand followed by the formation of tris-complexes. The spectral and PXRD analysis of the separated colloids indicates that the high stability of the tris-complexes provides their safe conversion into polystyrenesulfonate-stabilized colloids using the solvent exchange method. The red Eu3+-centered luminescence of the tris-complex exhibits the same specificity in the solutions and the colloids. The pronounced luminescent response on the antibiotic ceftriaxone allows for sensing the latter in aqueous solutions with an LOD value equal to 0.974 μM.

show abstract

Section: Introductionmentioning

confidence: 99%

Phosphineoxide-Chelated Europium(III) Nanoparticles for Ceftriaxone Detection

et al. 2023

View full text Add to dashboard Cite

show abstract

Lanthanide Complexes (Ln=La, Nd, Dy) of Octaethyl propane‐1,1,3,3‐tetrayltetrakis(phosphonate): Multidentate Binding Competing with Monodentate DMSO Complexes

Koehne

Pietschnig

2022

Zeitschrift anorg allge chemie

Self Cite

View full text Add to dashboard Cite

The preparation of lanthanide nitrate complexes [Ln(NO3)3{L}]n (Ln3+=La, Nd, Dy) supported by the octaethyl propane‐1,1,3,3‐tetrayltetrakis(phosphonate) (L) chelate ligand platform is presented. Re‐crystallization of these compounds from DMSO/THF led to a complete replacement of the multidentate phosphonate ester ligand and the formation of exclusively DMSO‐supported lanthanide nitrate species [Ln(NO3)3(DMSO)4]. The relative basicity of a model phosphonate ester vs. DMSO is explored with theoretical means, pointing out the relevance of solvation in this case in line with the experimentally observed exchange process. The optical properties of the dysprosium(III) derivatives are examined in the visible region indicating a significantly higher quantum yield for its tetraphosphonic ester complex than for the DMSO coordinated analog.

show abstract