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Journal articles on the topic 'Ions lanthanides'

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Published: 7 July 2024

Last updated: 31 July 2025

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1

Pałasz, A., and P. Czekaj. "Toxicological and cytophysiological aspects of lanthanides action." Acta Biochimica Polonica 47, no. 4 (2000): 1107–14. http://dx.doi.org/10.18388/abp.2000_3963.

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Lanthanides, also called rare-earth elements, are an interesting group of 15 chemically active, mainly trivalent, f-electronic, silvery-white metals. In fact, lanthanides are not as rare as the name implies, except for promethium, a radioactive artificial element not found in nature. The mean concentrations of lanthanides in the earth's crust are comparable to those of life-important elements like iodine, cobalt and selenium. Many lanthanide compounds show particular magnetic, catalytic and optic properties, and that is why their technical applications are so extensive. Numerous industrial sou

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2

Alakhras, Fadi. "Kinetic Studies on the Removal of Some Lanthanide Ions from Aqueous Solutions Using Amidoxime-Hydroxamic Acid Polymer." Journal of Analytical Methods in Chemistry 2018 (July 8, 2018): 1–7. http://dx.doi.org/10.1155/2018/4058503.

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Lanthanide metal ions make distinctive and essential contributions to recent global proficiency. Extraction and reuse of these ions is of immense significance especially when the supply is restricted. In light of sorption technology, poly(amidoxime-hydroxamic) acid sorbents are synthesized and utilized for the removal of various lanthanide ions (La3+, Nd3+, Sm3+, Gd3+, and Tb3+) from aqueous solutions. The sorption speed of trivalent lanthanides (Ln3+) depending on the contact period is studied by a batch equilibrium method. The results reveal fast rates of metal ion uptake with highest percen

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3

Maza-Rodriguez, J., P. Olivera-Pastor, S. Bruque, and A. Jimenez-Lopez. "Exchange selectivity of lanthanide ions in montmorillonite." Clay Minerals 27, no. 1 (1992): 81–89. http://dx.doi.org/10.1180/claymin.1992.027.1.08.

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AbstractThe exchange of Ca2+ and Na+ by tanthanide ions (Ln3+ = Pr3+, Gd3+, Er3+) in montmorillonite was investigated at two different ionic strengths (0·01 and 0·1 mol/kg). Preferential sorption of Ln3+ was observed and variable selectivity coefficients were found depending upon the lanthanide concentration in the solid, and ionic strength. The highest exchange extent of Ln3+ always occurred for the system Na+/Ln3+, but the exchange selectivities of Ln3+ were generally higher in the exchange system Ca2+/Ln3+. Although the relative affinity of montmorillonite for the three lanthanide ions was

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4

Levy-Ontman, Oshrat, Shir Dayan, Ofra Paz-Tal, and Adi Wolfson. "Adsorption of Heavy Metal Ions from Multi-Ion Solutions Using Polysaccharide Hydrogels." Polysaccharides 6, no. 2 (2025): 42. https://doi.org/10.3390/polysaccharides6020042.

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Adsorption has been found to be highly effective for removing heavy metals from polluted industrial wastewater. Adsorbents of biological origin, such as negatively charged polysaccharides, e.g., alginate and carrageenan, have attracted a lot of attention recently. In this study, these three polysaccharides were used to adsorb different heavy metal ions from aqueous solutions. The results showed that the sorption yields of various lanthanides with the kappa and iota carrageenan were similar, though the sorption yields of the iota beads were higher. Also, the iota and the kappa beads had higher

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5

Citron, Irvin M., Patrick M. Hanlon, and Stephen Arthur. "Ultraviolet Spectroscopic Determination of Five Lanthanide Elements without Prior Separation." Applied Spectroscopy 47, no. 6 (1993): 764–72. http://dx.doi.org/10.1366/0003702934067027.

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This investigation has resulted in an analytical method for the quantitative determination of total lanthanide concentration in aqueous solution by absorbance at 240 nm in the ultraviolet followed by quantitative determination of individual lanthanide ion concentrations by the use of concentration-responsive absorption peaks in the 190–235 nm region. The 240-nm peak is present and is proportional to concentration regardless of the ligand employed to complex the lanthanides (including H2O). The individual lanthanide/ligand peaks in the 190–235 nm region were selected on the basis of their separ

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6

Werts, Martinus H. V. "Making sense of Lanthanide Luminescence." Science Progress 88, no. 2 (2005): 101–31. http://dx.doi.org/10.3184/003685005783238435.

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The luminescence of trivalent lanthanide ions has found applications in lighting, lasers, optical telecommunications, medical diagnostics, and various other fields. This introductory review presents the basics of organic and inorganic luminescent materials containing lanthanide ions, their applications, and some recent developments. After a brief history of the discovery, purification and early spectroscopic studies of the lanthanides, the radiative and nonradiative transitions of the 4f electrons in lanthanide ions are discussed. Lanthanide-doped phosphors, glasses and crystals as well as lum

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7

Zhang, Hailong, Ao Li, Kai Li, et al. "Ultrafiltration separation of Am(VI)-polyoxometalate from lanthanides." Nature 616, no. 7957 (2023): 482–87. http://dx.doi.org/10.1038/s41586-023-05840-z.

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AbstractPartitioning of americium from lanthanides (Ln) present in used nuclear fuel plays a key role in the sustainable development of nuclear energy1–3. This task is extremely challenging because thermodynamically stable Am(III) and Ln(III) ions have nearly identical ionic radii and coordination chemistry. Oxidization of Am(III) to Am(VI) produces AmO22+ ions distinct with Ln(III) ions, which has the potential to facilitate separations in principle. However, the rapid reduction of Am(VI) back to Am(III) by radiolysis products and organic reagents required for the traditional separation proto

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8

Martín-Rodríguez, R., R. Valiente, F. Aguado, and A. C. Perdigón. "Highly efficient photoluminescence from isolated Eu3+ ions embedded in high-charge mica." J. Mater. Chem. C 5, no. 39 (2017): 10360–68. http://dx.doi.org/10.1039/c7tc01818e.

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Incorporation of lanthanide ions in synthetic clay minerals is a promising approach to combine the efficient sharp-line emission of lanthanides with the unique structural stability and high adsorption capacity of high-charge micas.

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9

Onghena, Bieke, Eleonora Papagni, Ernesto Rezende Souza, Dipanjan Banerjee, Koen Binnemans, and Tom Vander Hoogerstraete. "Speciation of lanthanide ions in the organic phase after extraction from nitrate media by basic extractants." RSC Advances 8, no. 56 (2018): 32044–54. http://dx.doi.org/10.1039/c8ra06712k.

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10

Mukta, Ojha, Kumar Sanjay, Laxmi Shubh, and S.N. Jatolia. "Review on Ln (III) Metal Complexes with N, S and 'O' Containing Heterocyclic Ligands." Chemistry Research Journal 8, no. 5 (2023): 35–39. https://doi.org/10.5281/zenodo.11382351.

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<strong>Abstract </strong> The spectroscopic properties of the Ln (III) ions are unique due to shielding of the 4f orbitals by the filled 5s<sup>2</sup> and 5p<sup>6</sup> sub-shells. The electronic, in 4 f orbitals are Laporte forbidden.  Most of the sharp lines like 4f↔4f transitions originating within the 4f-configuration of the lanthanide (III) ions are little affected by the environment of the lanthanide ions. Such transitions have been called hypersensitive transitions by Jorgensen and Judd.  In lanthanides, transitions involve only a redistribution of electrons within the

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11

Dhepe, A. S., and A. B. Zade. "Spectrophotometric Study of Ternary Complex Forming Systems of Some Lanthanide Metal Ions with Eriochrome Cyanine R in Presence of Cetylpyridinium Bromide for Microdetermination." E-Journal of Chemistry 8, no. 3 (2011): 1264–74. http://dx.doi.org/10.1155/2011/871685.

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Study of coordination compounds of lanthanide elements has received a great attention due to growing applications in science and technology. Number of chromogenic reagents form water soluble colored complexes with lanthanides. Eriochrome cyanine R (ECR) a member of triphenylmethane type of dye has been reported to form green colored complexes with lanthanides and has been used for microdetermination of these metal ions. Addition of cationic surfactant, Cetylpyridinium bromide (CPB), a cationic surfactant sensitizes the color reactions of Gd(III), Tb(III), Dy(III), Ho(III) and Lu(III) with ECR.

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12

Semenishyn, Nikolay, Serhii Smola, Mariia Rusakova, and Natalia Rusakova. "4f-LUMINESCENCE OF LANTHANIDE IONS IN REGIOISOMERIC CORROLE COMPLEXES." Ukrainian Chemistry Journal 87, no. 9 (2021): 35–44. http://dx.doi.org/10.33609/2708-129x.87.09.2021.35-44.

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Isomeric ditopic corroles and complexes of Yb (III), Nd (III) and Er (III) based on them were synthesized and corrole-photosensitized 4f-luminescence in near infrared region was revealed. The structure of isomeric complexes allows adjusting the distance between the corrole core and lanthanide ion. The obtained results show that the sensitization mechanism changes drastically for both different lanthanides and isomeric forms.

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13

Gagné, Olivier Charles. "Bond-length distributions for ions bonded to oxygen: results for the lanthanides and actinides and discussion of the f-block contraction." Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 74, no. 1 (2018): 49–62. http://dx.doi.org/10.1107/s2052520617017425.

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Bond-length distributions have been examined for 84 configurations of the lanthanide ions and 22 configurations of the actinide ions bonded to oxygen, for 1317 coordination polyhedra and 10 700 bond distances for the lanthanide ions, and 671 coordination polyhedra and 4754 bond distances for the actinide ions. A linear correlation between mean bond length and coordination number is observed for the trivalent lanthanides ions bonded to O2−. The lanthanide contraction for the trivalent lanthanide ions bonded to O2− is shown to vary as a function of coordination number, and to diminish in scale w

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14

Tigaa, Rodney A., Raul E. Ortega, Xinsong Lin, and Geoffrey F. Strouse. "A Versatile Tripodal Ligand for Sensitizing Lanthanide (LnIII) Ions and Color Tuning." Chemistry 3, no. 1 (2021): 138–45. http://dx.doi.org/10.3390/chemistry3010011.

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Lanthanide (LnIII) ions were successfully chelated and sensitized with a tripodal ligand. The absolute LnIII-centered emission efficiencies were ~3% for both the europium(III) (EuIII) and terbium (TbIII) complexes and up to 54% for the cerium(III) (CeIII) complex. The differences in emission quantum yields for the early lanthanides (CeIII) and the mid lanthanides (EuIII and TbIII) were attributed to their d–f and f–f nature, respectively. Despite the low quantum yield of the EuIII complex, the combination of the residual ligand fluorescence and the red EuIII emission resulted in a bluish-white

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15

Li, Yuyang, and Ronald Kluger. "Increased efficiency in biomimetic Lewis acid–base pair catalyzed monoacylation of diols by acyl phosphate monoesters." FACETS 2, no. 2 (2017): 682–89. http://dx.doi.org/10.1139/facets-2017-0047.

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Acyl phosphate monoesters are biomimetic acylation reagents that require coordination to metal ions to react with cis-diol substrates in water. With lanthanide catalysts, outcomes are compromised by (1) the competitive lanthanide-promoted hydrolysis of the acyl phosphate reagents as well as by (2) the high affinity of lanthanum ions for the phosphate monoester by-product. Based on analysis of the mechanism of the process, optimizing reaction conditions can selectively inhibit the lanthanum-promoted hydrolysis of acyl phosphate monoesters. Furthermore, using zinc salts and lead salts in place o

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16

Weißhoff, Hardy, Katharina Janek, Peter Henklein, Herbert Schumann, and Clemens Mügge. "Elution Behavior and Structural Characterization of N- and C-functionalized DOTA Complexes for the Labelling of Biomolecules." Zeitschrift für Naturforschung B 64, no. 10 (2009): 1159–68. http://dx.doi.org/10.1515/znb-2009-1008.

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Two types of lanthanide complexes of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) for the labelling of biomolecules were investigated by HPLC, MS and NMR spectroscopy. The elution behavior of lanthanide complexes of N-functionalized DOTA [1,4,7,10-tetraazacyclododecane- 1,4,7-triacetic acid-10-maleimidoethylacetamide (nDOTA-Mal) and 1-{2-[4-(maleimido- N-propylacetamidobutyl)amino]-2-oxoethyl}-1,4,7,10-tetraazacyclododecane-4,7,10-triacetic acid (nDOTA-Bu-Mal)] and C-functionalized DOTA [2-{4-(maleimido-N-propylacetamido)benzyl}-1,4, 7,10-tetraazacyclododecane-1,4,7,10-tetra

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17

Lin, Ying-Ting, Rong-Xuan Liu, Gilbert Audira, et al. "Lanthanides Toxicity in Zebrafish Embryos Are Correlated to Their Atomic Number." Toxics 10, no. 6 (2022): 336. http://dx.doi.org/10.3390/toxics10060336.

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Rare earth elements (REEs) are critical metallic materials with a broad application in industry and biomedicine. The exponential increase in REEs utilization might elevate the toxicity to aquatic animals if they are released into the water due to uncareful handling. The specific objective of our study is to explore comprehensively the critical factor of a model Lanthanide complex electronic structures for the acute toxicity of REEs based on utilizing zebrafish as a model animal. Based on the 96 h LC50 test, we found that the majority of light REEs display lower LC50 values (4.19–25.17 ppm) tha

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18

Lazicki, Andy Peter, and Johna Leddy. "Investigating Lanthanide Ions for Catalysis of Alcohols." ECS Meeting Abstracts MA2023-01, no. 50 (2023): 2585. http://dx.doi.org/10.1149/ma2023-01502585mtgabs.

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Small molecule alcohols (methanol, ethanol, 2-propanol) are fuels limited by their oxidative kinetics. For these small molecules to be used as fuels, catalysts must be developed. One domain of chemicals which has not had its catalytic properties entirely studied are lanthanides. These lanthanides contain many properties not found in d-block metals or other compounds frequently used as catalysts. The ability to catalyze oxidation of small molecule alcohols is studied here. Performance of these lanthanides as a catalyst are measured for each small molecule using common voltametric techniques. Pl

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19

Angyal, SJ, L. Littlemore, and PAJ Gorin. "Lanthanide-Induced Shifts in the 13C N.M.R. Spectra of epi-Inositol and Some Anhydrohexoses. The Anomalous Behaviour of the Heavy Lanthanides." Australian Journal of Chemistry 38, no. 3 (1985): 411. http://dx.doi.org/10.1071/ch9850411.

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The shifts induced in the 13C n.m.r . spectrum of epi-inositol by the addition of various lanthanide ions have been determined and have been analysed in terms of contact and pseudocontact interactions. The behaviour of the three heavy lanthanides was found to be anomalous, probably owing to their smaller ionic radii and their lesser extent of hydration. Similar measurements have also been carried out on four 1,6- anhydro-β-D-hexopyranoses.

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20

Pentón-Madrigal, A., Y. Mendez-González, A. Peláiz-Barranco, et al. "Study ofAandBsites order in lanthanide-doped lead titanate ferroelectric system." Powder Diffraction 31, no. 1 (2016): 23–30. http://dx.doi.org/10.1017/s0885715615000998.

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Pb0.88Ln0.08TiO3ferroelectric system, whereLn= La, Sm, Eu, and Dy, has been characterized using Scanning Electron Microscopy, Raman spectroscopy, and X-ray diffraction experiments. Softening of the lowest transverse optical phonon modeE(1TO) was evaluated as a function of the rare earths’ ionic radius suggesting partial occupation of lanthanide ions at theAandBsites of the perovskite structure. Using Rietveld refinements, it has been established a higher incorporation of Ln3+ions into theAsites of the perovskite structure than that of theBsites for the studied ceramics. The occupation atBsites

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21

Wójcik, Grzegorz. "Sorption Behaviors of Light Lanthanides(III) (La(III), Ce(III), Pr(III), Nd(III)) and Cr(III) Using Nitrolite." Materials 13, no. 10 (2020): 2256. http://dx.doi.org/10.3390/ma13102256.

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The sorption of light lanthanides(III) (La(III), Ce(III), Pr(III), Nd(III)) and chromium(III) ions from acidic solutions on Nitrolite was studied at varying ions concentrations, pH, contact time and temperatures. The sorption capacity of lanthanides(III) and chromium(III) ions were examined in the ranges 2–9 and 2–5, respectively. The adsorption capacities of all metals are increase with the increasing pH (up to initial pH 9), despite the potential precipitation of metals at higher pH values. Therefore, an initial pH 9 of lanthanides gives the highest adsorption capacities. The kinetics of sor

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22

Gao, Qi, Shuai Han, Qing Ye, Shuiyuan Cheng, Tianfang Kang, and Hongxing Dai. "Effects of Lanthanide Doping on the Catalytic Activity and Hydrothermal Stability of Cu-SAPO-18 for the Catalytic Removal of NOx (NH3-SCR) from Diesel Engines." Catalysts 10, no. 3 (2020): 336. http://dx.doi.org/10.3390/catal10030336.

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Lanthanide (La, Ce, Nd, Gd, Tb, Ho or Lu)-doped Cu-SAPO-18 samples were prepared using the ion-exchange method. Physicochemical properties of the samples were systematically characterized by a number of analytical techniques, and the effects of lanthanide doping on catalytic activity and hydrothermal stability of the Cu-SAPO-18 catalysts for the NH3-SCR reaction were examined. It is shown that the doping of lanthanide elements could affect the interaction between the active components (copper ions) and the AEI-structured SAPO-18 support. The inclusion of some lanthanides significantly slowed d

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23

Krsmanović, R., Stefano Polizzi, and P. Canton. "Characterization of Nanoporous Lanthanide-Doped Gadolinium Gallium Garnet Powders Obtained by Propellant Synthesis." Materials Science Forum 494 (September 2005): 143–48. http://dx.doi.org/10.4028/www.scientific.net/msf.494.143.

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In the present work we study the nanocrystalline powders of lanthanide-doped Gd3Ga5O12 (GGG, gadolinium gallium garnet) prepared using propellant synthesis. A series of GGG samples containing a number of different trivalent lanthanide ions (Tm, Er, Ho, Eu, Sm, Nd, and Pr) in different quantities (1%, 5%, 10%) were produced. Samples were characterized by X-ray diffraction (pre- and post calcination) for phase identification and line-broadening analysis, and by electron microscopy (SEM and TEM) for morphological and nanostructural investigation. Thermal behavior of the powder was investigated by

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Yang, Han Yu. "Lanthanide-Based Nanoprobes for Time-Resolved Luminescence Imaging on Various Ions and Molecules." Materials Science Forum 1075 (November 30, 2022): 9–17. http://dx.doi.org/10.4028/p-76fds1.

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Lanthanide-doped upconversion nanoparticles (Ln-UCNPs) have been extensively explored in the biological field. In particular, Ln-UCNPs with near-infrared (NIR) fluorescence have tremendous potential for biological imaging because of their outstanding photo-and chemo-stability, extended photoluminescence lifetimes, low long-term toxicities and narrow photoluminescence bandwidths as well as minimal background interferences. Using predesigned energy transfer routes makes it possible to get upconversion luminescence from lanthanides' 4f-4f optical transitions. This article clarifies the key workin

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Savić, Aleksandar, Anna M. Kaczmarek, Rik Van Deun, and Kristof Van Hecke. "DNA Intercalating Near-Infrared Luminescent Lanthanide Complexes Containing Dipyrido[3,2-a:2′,3′-c]phenazine (dppz) Ligands: Synthesis, Crystal Structures, Stability, Luminescence Properties and CT-DNA Interaction." Molecules 25, no. 22 (2020): 5309. http://dx.doi.org/10.3390/molecules25225309.

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In order to create near-infrared (NIR) luminescent lanthanide complexes suitable for DNA-interaction, novel lanthanide dppz complexes with general formula [Ln(NO3)3(dppz)2] (Ln = Nd3+, Er3+ and Yb3+; dppz = dipyrido[3,2-a:2′,3′-c]phenazine) were synthesized, characterized and their luminescence properties were investigated. In addition, analogous compounds with other lanthanide ions (Ln = Ce3+, Pr3+, Sm3+, Eu3+, Tb3+, Dy3+, Ho3+, Tm3+, Lu3+) were prepared. All complexes were characterized by IR spectroscopy and elemental analysis. Single-crystal X-ray diffraction analysis of the complexes (Ln

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26

Romanova, Kseniya A., and Yuriy G. Galyametdinov. "Simulation of Energy Transfer Processes in Mesogenic Binuclear Complexes of Lanthanides(III)." Liquid Crystals and their Application 24, no. 1 (2024): 22–35. http://dx.doi.org/10.18083/lcappl.2024.1.22.

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Quantum-chemical simulation of the molecular structure and excited state energies of some mesogenic binuclear complexes of lanthanides(III) with substituted β-diketones and Lewis bases have been performed. Correlations between geometric parameters, structural features of the complexes' coordination polyhedra, potential liquid-crystalline properties, and luminescence efficiency were analyzed. According to the calculated values of the lowest singlet and triplet excited states of the ligands, energy level diagrams were constructed and the main channels of intramolecular energy transfer between th

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Liu, Xiaohui, Tuerxun Aidilibike, Junjie Guo, Yangyang Li, Weihua Di, and Weiping Qin. "Upconversion luminescence of Sm2+ ions." RSC Advances 7, no. 23 (2017): 14010–14. http://dx.doi.org/10.1039/c7ra00071e.

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P., K. Tarafder, K. Pradhan S., K. Mondal R., and K. Sircar J. "Liquid-liquid extraction of rare earth elements (total) using 2,3-dihydroxy-naphthalene as an extractant and its applications to the determination of REEs (total) in rock, soil and sediment samples by spectrophotometry." Journal of Indian Chemical Society Vol. 90, Nov 2013 (2013): 1961–67. https://doi.org/10.5281/zenodo.5792389.

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Chemistry Laboratory, Regional Center for Exploration and Research, Atomic Minerals Directorate, Eastern Region, AMD Complex, Khasmahal, Jamshedpur-831 002, Jharkhand, India <em>E-mail</em> : ptarafder@sify.com National Metallurgical Laboratory, Burmamines, Jamshedpur-831 007, Jharkhand, India A simple and rapid separation procedure for the determination of total rare earth elements (lanthanides) including yttrium in geological samples such as rock, soil and sediments has been developed. Lanthanides form 1 : 3 complex with O-O<em>'</em> type hi-dentate ligand, 2,3-dihydroxynaphthalene

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Nahar, Sultana N. "Theoretical Spectra of Lanthanides for Kilonovae Events: Ho I-III, Er I-IV, Tm I-V, Yb I-VI, Lu I-VII." Atoms 12, no. 4 (2024): 24. http://dx.doi.org/10.3390/atoms12040024.

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The broad emission bump in the electromagnetic spectra observed following the detection of gravitational waves created during the kilonova event of the merging of two neutron stars in August 2017, named GW170817, has been linked to the heavy elements of lanthanides (Z = 57–71) and a new understanding of the creation of heavy elements in the r-process. The initial spectral emission bump has a wavelength range of 3000–7000 Å, thus covering the region of ultraviolet (UV) to optical (O) wavelengths, and is similar to those seen for lanthanides. Most lanthanides have a large number of closely lying

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Lazaris, Dimitrios, Ioannis Sismanidis, Vasileios Drosos, Evripidis Farmakis, and and Evangelos Paleologos. "Absorption of Europium chloride from zebrafish (Danio rerio) embryos under experimental conditions." E3S Web of Conferences 436 (2023): 03003. http://dx.doi.org/10.1051/e3sconf/202343603003.

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Lanthanides (Ln) have an essential role in the pollution of the environment because of their ecotoxicity. The pollution of Ln significantly increased due to their use in industry and agriculture in the last decade. Europium (Eu) is the most reactive lanthanide by far. This metal is contained in many industries wastes and it may enter the food chain. The biochemical behavior of lanthanides has been extensively studied, but there are limited studies on Eu. It is remarkable that Ln react with biologically chemical compounds, affecting competitively and replacing the basic ions of the cell such as

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Safiulina, Alfiya M., Alexey V. Lizunov, Alexey V. Ivanov, et al. "Uranium(VI), Thorium(IV), and Lanthanides(III) Extraction from the Eudialyte Concentrate Using the N,O-Hybrid Heterocyclic Reagents." Metals 15, no. 5 (2025): 494. https://doi.org/10.3390/met15050494.

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N,O-donor hybrid heterocyclic extractants have great potential for separation of actinides from lanthanides in spent nuclear fuel reprocessing processes. We demonstrate that this type of reagents can be used for primary concentration of actinides contained in eudialyte, a promising mineral containing a heavy group of lanthanides. With respect to lanthanide ions, the efficiency of their extraction decreases in the series L3 >> L1 > L2, and the extraction of actinides decreases in the series L1 ≈ L3 >> L2. For the extractant L2 based on 2,2′-bipyridine-6,6′-dicarboxylic acid diami

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Simon, A., Hj Mattausch, N. B. Mikheev, and C. Keller. "Zum Einbau von einigen Lanthaniden in Gd2Cl3 / Incorporation of Some Lanthanides into Gd2Cl3." Zeitschrift für Naturforschung B 42, no. 6 (1987): 666–68. http://dx.doi.org/10.1515/znb-1987-0602.

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Abstract Co-crystallization experiments with radioactive isotopes of lanthanides (Ce, Nd, Eu, Gd, Tb, Dy, Tm, Yb) show that only Tb is incorporated by Gd2Cl3 in a significant amount. The results are discussed in terms of the electronic configuration of Ln2+ ions as well as redox potentials E°(Ln3+/Ln2+).

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Dunaev, Anatoliy M., Vladimir B. Motalov, and Lev S. Kudin. "ELECTRON WORK FUNCTION OF LANTHANIDE TRIIODIDES." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 63, no. 11 (2020): 13–20. http://dx.doi.org/10.6060/ivkkt.20206311.6292.

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Desorption enthalpies of LnI4– and Ln2I7– associative ions (Ln = La, Ce, Pr, Nd, Gd, Tb, Dy, Ho, Er, Tm, and Lu) and the enthalpy of sublimation of LnI3 molecules were determined by Knudsen effusion mass spectrometric technique. These data were used to calculate the effective values of electron work function φe of polycrystalline samples of lanthanide triiodides LnI3 for the first time. The calculation methodology is based on the study of thermochemical cycles, which include atoms, molecules, ions, and electrons being in thermodynamic equilibrium with the LnI3 crystal inside the effusion cell.

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34

Ali, Hassan, Reza Ganjali, and Farnoush Faridbod. "A lutetium pvc membrane sensor based on (2-oxo-1,2-diphenylethylidene)-n-phenylhydrazinecarbothioamide." Journal of the Serbian Chemical Society 76, no. 9 (2011): 1295–305. http://dx.doi.org/10.2298/jsc100826114a.

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Based on the former experience on the design and construction of metal ions sensors, especially those of high sensitivity for lanthanides, (2-oxo-1,2-diphenylethylidene)-N-phenylhydrazinecarbothioamide (PHCT) was used to construct a Lu3+ PVC sensor exhibiting a Nernstian slope of 19.8?0.3 mV decade-1. The sensor was found to function well over a concentration range of 1.0?10-2 and 1.0?10-6 mol L-1 of the target ion with a detection limit of 6.8?10-7 mol L-1. The sensor selectivity against many common alkaline, alkaline earth, transition, heavy metals and specially lanthanide ions was very good

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35

Berthod, Alain, Jun Xiang, Serge Alex, and Colette Gonnet-Collet. "Chromatographie à contre courant et micelles inverses pour la séparation et l'extraction de cations métalliques." Canadian Journal of Chemistry 74, no. 2 (1996): 277–86. http://dx.doi.org/10.1139/v96-031.

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Countercurrent chromatography (CCC) is a separation technique in which the stationary phase is a liquid. Diethylhexyl phosphoric acid (DEHPA) forms reverse micelles in heptane. Metallic ions, located in an aqueous phase, can be extracted into the aqueous core of the reverse micelles in the heptane phase. A CCC apparatus can be considered as a powerful mixing and extracting machine with efficiency above several hundreds of theoretical plates. La3+, Ce3+, Pr3+, and Nd3+ lanthanide cations were separated using CCC with a DEHPA-containing heptane stationary phase. Studying the retention variations

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36

Martinez-Martin, Paloma, Josefina Perles, and Juan Carlos Rodriguez-Ubis. "Crystal Structure Dependence of the Energy Transfer from Tb(III) to Yb(III) in Metal–Organic Frameworks Based in Bispyrazolylpyridines." Crystals 10, no. 2 (2020): 69. http://dx.doi.org/10.3390/cryst10020069.

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Luminescent mixed lanthanide metal−organic framwork (MOF) materials have been prepared from two polyheterocyclic diacid ligands, 2,6-bis(3-carboxy-1-pyrazolyl)pyridine and 2,6-bis(4-carboxy-1-pyrazolyl)pyridine. The crystal structures of the two organic molecules are presented together with the structures for the MOFs obtained by hydrothermal synthesis either with Yb(III) or mixed Tb(III)/Yb(III) ions. Different coordination architectures result from each ligand, revealing also important differences between the lanthanides. The mixed lanthanide metal−organic frameworks also present diverse lum

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37

Lansman, J. B. "Blockade of current through single calcium channels by trivalent lanthanide cations. Effect of ionic radius on the rates of ion entry and exit." Journal of General Physiology 95, no. 4 (1990): 679–96. http://dx.doi.org/10.1085/jgp.95.4.679.

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Currents flowing through single dihydropyridine-sensitive Ca2+ channels were recorded from cell-attached patches on C2 myotubes. In the presence of dihydropyridine agonist to prolong the duration of single-channel openings, adding micromolar concentrations of lanthanum (La), cerium (Ce), neodymium (Nd), gadolinium (Gd), dysprosium (Dy), or ytterbium (Yb) to patch electrodes containing 110 mM BaCl2 caused the unitary Ba2+ currents to fluctuate between fully open and shut states. The kinetics of channel blockade followed the predictions of a simple open channel block model in which the fluctuati

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38

Chan, Eric J., Jack M. Harrowfield, Brian W. Skelton, and Allan H. White. "X-Ray Structural Studies of Small-Bite Ligands on Large Cations – Lanthanide(III) Ions and Dimethylphosphate." Australian Journal of Chemistry 73, no. 6 (2020): 539. http://dx.doi.org/10.1071/ch19506.

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Reactions of lanthanide chlorides or trifluoracetates (tfa) or picrates with trimethylphosphate alone in the first two cases or trimethylphosphate plus 1,10-phenanthroline or 2,2′;6′,2′′-terpyridine in the third, result in the formation of crystalline products containing dimethylphosphate (dmp–). Single crystal X-ray structural characterisation of these materials has shown that the stoichiometrically simple Ln(dmp)3 species obtained with chloride reactants and the lighter lanthanides are polymeric and commonly dimorphic, while the stoichiometrically more variable mixed dmp/tfa complexes have s

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39

Jona, I., and A. Martonosi. "The effects of membrane potential and lanthanides on the conformation of the Ca2+-transport ATPase in sarcoplasmic reticulum." Biochemical Journal 234, no. 2 (1986): 363–71. http://dx.doi.org/10.1042/bj2340363.

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The effects of Ca2+, lanthanide ions (Gd3+, La3+ and Pr3+) and membrane potential on the fluorescence of tryptophan and covalently bound fluorescein were analysed in native and fluorescein isothiocyanate (FITC)-labelled sarcoplasmic reticulum vesicles. The binding of Ca2+ and lanthanides to the Ca2+-ATPase increases the fluorescence intensity of tryptophan and decreases the fluorescence intensity of FITC; the dependence of these effects on cation concentration is consistent with the involvement of the high-affinity Ca2+-binding sites of the Ca2+-ATPase in the cation-induced fluorescence change

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40

Flakina, Alexandra M., Elena I. Zhilyaeva, Gennady V. Shilov, Maxim A. Faraonov, Svetlana A. Torunova, and Dmitri V. Konarev. "Layered Organic Conductors Based on BEDT-TTF and Ho, Dy, Tb Chlorides." Magnetochemistry 8, no. 11 (2022): 142. http://dx.doi.org/10.3390/magnetochemistry8110142.

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Molecular semiconductors with lanthanide ions have been synthesized based on BEDT-TTF and lanthanide chlorides: (BEDT-TTF)2[HoCl2(H2O)6]Cl2(H2O)2 (1, which contains a 4f holmium cation), and (BEDT-TTF)2LnCl4(H2O)n (Ln = Dy, Tb, Ho (2–4), which contain 4f anions of lanthanides). Conductivity and EPR measurements have been carried out along with the SQUID magnetometry, and the crystal structure has been established for 1. The structure of 1 is characterized by an alternation of organic radical cation layers composed of BEDT-TTF chains and inorganic layers consisting of chains of the [HoCl2(H2O)6

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Balestrieri, Matteo, Silviu Colis, Mathieu Gallart, et al. "Photon management properties of rare-earth (Nd,Yb,Sm)-doped CeO2films prepared by pulsed laser deposition." Physical Chemistry Chemical Physics 18, no. 4 (2016): 2527–34. http://dx.doi.org/10.1039/c5cp04961j.

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Niciu, H., Dorel Radu, C. Onose, et al. "The Influence of the Vitreous Matrix for the Determination of the Lanthanides Doping Concentration from the Optical Transmission Spectra." Advanced Materials Research 39-40 (April 2008): 269–72. http://dx.doi.org/10.4028/www.scientific.net/amr.39-40.269.

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In contrast with transitional metals whose spectra and color depends a lot of the ligands strength field, the sensitivity of the rare earth spectra is significantly weaker. This is the reason why the color of these ions is the same whatever the basic vitreous matrix. These properties permit to establish a relation for the determination of the concentration of these ions in vitreous matrix directly from the optical transmission spectra. The paper presents some samples of silica and phosphate glasses with lanthanides content for nonlinear optical applications synthesized at a laboratory scale. V

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43

Ferenc, Wiesława, Beata Cristóvão, and Jan Sarzyński. "Magnetic, thermal and spectroscopic properties of lanthanide(III) 2-(4-chlorophenoxy) acetates, Ln(C8H6ClO3)3•nH2O." Journal of the Serbian Chemical Society 78, no. 9 (2013): 1335–49. http://dx.doi.org/10.2298/jsc121203043f.

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4-Chlorophenoxyacetates of lanthanides(III) were synthesized as polycrystalline hydrated solids with the general formulae: Ln(C8H6ClO3)3?2H2O (Ln = La(III), Pr(III), Sm(III), Eu(III) and Tb(III)), Ln(C8H6ClO3)3?H2O (Ln = Dy(III)) and Ln(C8H6ClO3)3?3H2O (Ln = Er(III), Tm(III), Yb(III) and Lu(III) and characterized by elemental analysis, FTIR spectroscopy, magnetic and thermogravimetric studies and also by X-ray diffraction (XRD) measurements. The complexes have colours typical for lanthanide(III) ions. The carboxylate groups bind as bidentate chelating. On heating to 1273 K in air the complexes

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44

Edington, Sean C., Andrea Gonzalez, Thomas R. Middendorf, D. Brent Halling, Richard W. Aldrich, and Carlos R. Baiz. "Coordination to lanthanide ions distorts binding site conformation in calmodulin." Proceedings of the National Academy of Sciences 115, no. 14 (2018): E3126—E3134. http://dx.doi.org/10.1073/pnas.1722042115.

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The Ca2+-sensing protein calmodulin (CaM) is a popular model of biological ion binding since it is both experimentally tractable and essential to survival in all eukaryotic cells. CaM modulates hundreds of target proteins and is sensitive to complex patterns of Ca2+ exposure, indicating that it functions as a sophisticated dynamic transducer rather than a simple on/off switch. Many details of this transduction function are not well understood. Fourier transform infrared (FTIR) spectroscopy, ultrafast 2D infrared (2D IR) spectroscopy, and electronic structure calculations were used to probe int

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45

Halubek-Gluchowska, Katarzyna, Damian Szymański, Thi Ngoc Lam Tran, Maurizio Ferrari, and Anna Lukowiak. "Upconversion Luminescence of Silica–Calcia Nanoparticles Co-doped with Tm3+ and Yb3+ Ions." Materials 14, no. 4 (2021): 937. http://dx.doi.org/10.3390/ma14040937.

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Looking for upconverting biocompatible nanoparticles, we have prepared by the sol–gel method, silica–calcia glass nanopowders doped with different concentration of Tm3+ and Yb3+ ions (Tm3+ from 0.15 mol% up to 0.5 mol% and Yb3+ from 1 mol% up to 4 mol%) and characterized their structure, morphology, and optical properties. X-ray diffraction patterns indicated an amorphous phase of the silica-based glass with partial crystallization of samples with a higher content of lanthanides ions. Transmission electron microscopy images showed that the average size of particles decreased with increasing la

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46

KRUPIN, A. S., I. N. AKHMETSHINA, E. YU MOLOSTOVA, A. P. KOVSHIK, A. A. KNYAZEV, and YU G. GALYAMETDINOV. "UV TRANSFORMING MATERIALS BASED ON POLYLACTIDE DOPED WITH ANISOMETRIC EUROPIUM(III) COMPLEX." Herald of Technological University 27, no. 11 (2024): 22–28. https://doi.org/10.55421/1998-7072_2024_27_11_22.

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Luminescent materials are widely used in various fields of science and technology. Currently, of current interest are phosphors for fluorescent lighting, luminescent glasses and glass ceramics for lasers, optical fibers and solar concentrators, electroluminescent films for OLED, electron beam phosphors, materials based on lanthanide ions as probes of the structure of biological macromolecules. In this aspect, lanthanide(III) compounds attract the attention of researchers due to their unique luminescent properties, such as monochromatic emission, long luminescence lifetime, and large Stokes shi

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47

Misztalewska, I., A. Z. Wilczewska, O. Wojtasik, K. H. Markiewicz, P. Kuchlewski, and A. M. Majcher. "New acetylacetone-polymer modified nanoparticles as magnetically separable complexing agents." RSC Advances 5, no. 121 (2015): 100281–89. http://dx.doi.org/10.1039/c5ra20137c.

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48

Qadeer, R., M. Saleem, and N. Khalid. "ADSORPTION CAPACITY OF ACTIVATED CHARCOAL FOR LANTHANIDES (III) IONS." Nucleus 47, no. 2 (2010): 143–47. https://doi.org/10.71330/thenucleus.2010.897.

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The adsorption of lanthanides metals namely Sm3+, Eu3+ and Gd3+ on activated charcoal has been studied as a function of pH at room temperature. Maximum adsorption was observed at pH value of 4. The adsorption mechanism has been described in term of hydrolysed species formed in aqueous solution at different pH. The adsorption of metal ions obeyed the Langmuir and Temkin isotherm models in the range of 1.0 to 6.0 g of metal ions per liter of solution. The values of adsorption capacities â€œQâ€ for Sm3+, Eu3+ and Gd3+ ions have been calculated at different pH. The adsorption capacities obtained

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49

Turanov, A. N., V. K. Karandashev, O. I. Artyushin, E. V. Smirnova, and V. K. Brel. "Synthesis and extraction properties of 4,5-diphosphorylated triazoles." Журнал общей химии 93, no. 4 (2023): 577–85. http://dx.doi.org/10.31857/s0044460x23040091.

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A method for the synthesis of 4,5-diphosphorylated 1,2,3-triazoles has been developed, and the extraction of U(VI), Th(IV), and lanthanides(III) from nitric acid solutions by them was studied. A synergistic effect was found in the extraction of metal ions with mixtures of 4,5-diphosphorylated 1,2,3-triazoles and dinonylnaphthalenesulfonic acid. The stoichiometry of the extracted complexes was determined, and the influence of the structure of the extractant and the concentration of HNO3 in the aqueous phase on the efficiency of the extraction of metal ions into the organic phase was considered.

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Silva, Ricardo F., Jorge M. Sampaio, Pedro Amaro, Andreas Flörs, Gabriel Martínez-Pinedo, and José P. Marques. "Structure Calculations in Nd III and U III Relevant for Kilonovae Modelling." Atoms 10, no. 1 (2022): 18. http://dx.doi.org/10.3390/atoms10010018.

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The detection of gravitational waves and electromagnetic signals from the neutron star merger GW170817 has provided evidence that these astrophysical events are sites where the r-process nucleosynthesis operates. The electromagnetic signal, commonly known as kilonova, is powered by the radioactive decay of freshly synthesized nuclei. However, its luminosity, colour and spectra depend on the atomic opacities of the produced elements. In particular, opacities of lanthanides and actinides elements, due to their large density of bound–bound transitions, are fundamental. The current work focuses on

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