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A series of lanthanide diphosphonates, namely Ln(HL)(HO) (Ln = Nd 1, Eu 2, Tb 3 and Er 4), have been synthesized from a semirigid diphosphonate ligand, (5-methyl-1,3-phenylene)bis(methylene)bisphosphonic acid (HL). These lanthanide diphosphonates have been systematically characterized by using powder and single-crystal X-ray diffraction, elemental analysis, TGA, IR, UV-vis absorption and luminescence techniques. The single-crystal XRD measurements revealed that these compounds all have two-dimensional layered crystal structures. Among these four compounds, 1, 2 and 4 are isostructural and crystallize in the P2/c space group, whereas compound 3 crystallizes in the P2 space group. These compounds display the characteristic emissions of the respective lanthanide ions. The sensing properties of compound 3 were investigated which revealed that it could be used as a luminescent probe for Fe and CrO with good selectivity and sensitivity.
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http://dx.doi.org/10.1039/c9dt03531a | DOI Listing |
Inorg Chem
December 2024
Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1 bld. 3, Moscow 119991, Russia.
Hybrid N,O-donor ligands based on 1,10-phenanthroline are a promising class of compounds for processing high-level waste. Here, we synthesized novel phenanthroline-based diphosphonates containing electron-withdrawing fluorine atoms in alkyl substituents. We studied their extraction properties for Am(III) and, for the first time, for the entire series of lanthanides(III).
View Article and Find Full Text PDFChem Sci
October 2024
College of Chemistry and Chemical Engineering, Key Laboratory of Shandong Provincial Universities for Functional Molecules and Materials, Qingdao University Qingdao Shandong 266071 P. R. China
Water Res
November 2023
College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China. Electronic address:
Organic phosphonates have been widely used in various industries and are ubiquitous in wastewaters, and efficient removal of phosphonates is still a challenge for the conventional processes because of the severe interferences from the complex water constitutions. Herein, an Nd-based nanocomposite (HNdO@PsAX) was fabricated by immobilizing hydrated neodymium oxide (HNdO) nanoparticles inside a polystyrene anion exchanger (PsAX) to remove phosphonates from high-salinity aqueous media. Batch experiments demonstrated that HNdO@PsAX had an excellent adsorption capacity (∼90.
View Article and Find Full Text PDFMolecules
May 2023
Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany.
Etidronic acid (1-Hydroxyethylidene-1,1-diphosphonic acid, HEDP, HL) is a proposed decorporation agent for U(VI). This paper studied its complex formation with Eu(III), an inactive analog of trivalent actinides, over a wide pH range, at varying metal-to-ligand ratios (M:L) and total concentrations. Combining spectroscopic, spectrometric, and quantum chemical methods, five distinct Eu(III)-HEDP complexes were found, four of which were characterized.
View Article and Find Full Text PDFInt J Mol Sci
February 2023
Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 160 00 Prague, Czech Republic.
Upconverting nanoparticles (UCNPs) are of particular interest in nanomedicine for in vivo deep-tissue optical cancer bioimaging due to their efficient cellular uptake dependent on polymer coating. In this study, particles, 25 nm in diameter, were prepared by a high-temperature coprecipitation of lanthanide chlorides. To ensure optimal dispersion of UCNPs in aqueous milieu, they were coated with three different polymers containing reactive groups, i.
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