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Tetracyanidoborates of Divalent Eu and Yb 3D Metal–Organic Frameworks with Cubic Structure. Thermochromic Luminescence and Slow Relaxation of Magnetization of Eu[B(CN)4]2Click to copy article link 来源:ACS PublicationsTetracyanidoborates of divalent lanthanides, Ln[B(CN)4]2·THF (Ln = Eu (1), Yb (2)), were obtained by a salt metathesis reaction of lanthanide diiodides and ammonium tetracyanidoborate. Unlike known tetracyanidoborates of alkaline-earth metals and trivalent lanthanides, compounds 1 and 2 are 3D metal–organic frameworks (MOFs) with a cubic structure. MOF 1 demonstrates air ...
Release time: 2025 - 05 - 21
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Metastable Ag–Ln–S Nanocrystals with Ordered Cations and Vacancies Form through Structure-Templating Ag2S Intermediate 来源:ACS PublicationsRare-earth chalcogenides have unusual crystal chemistry and properties, and have been difficult to access as nanocrystals, representing an opportunity for new materials discovery. Here, we report the colloidal synthesis of ternary Ag–Ln–S nanocrystals (Ln = Pr, Nd, Sm, and Gd) with a metastable crystal structure. Structural analysis suggests that the products adopt a trigonal anti-La2O3 structure that does not have a bulk congener in this phase space. T...
Release time: 2025 - 05 - 19
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Correlating Structural Disorder and Pr3+ Emission Dynamics in Lu3Al2.5–xScxGa2.5O12 Crystals: A Comprehensive Structure–Property Investigation 来源:ACS PublicationsThis study explored the influence of Sc3+ ions incorporation on the structural, vibrational, luminescent, and scintillation properties of Pr3+-doped Lu3(Al, Sc)2.5Ga2.5O12 garnet crystals. Addressing the limited research on Sc-admixed and Pr3+ doped garnet systems, this work successfully demonstrated the crystallization of garnet crystals from the melt, overcoming the substantial atomic mismatch between Sc and Al while preserving...
Release time: 2025 - 05 - 16
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Prediction and Rationalization of Site Preference of Rare Earth Elements in Fluorapatite from Density Functional Theory 来源:ACS PublicationsFluorapatite (FAp, nominally Ca10(PO4)6F2) has been identified as an important host material for rare earth elements and yttrium (REY) in marine sediments. REY can be accommodated in either the larger 6+3 coordinated Ca1 site or the smaller 6+1 coordinated Ca2 site, yet little is known about the site preference of REY through the lanthanide series despite its importance for understanding REY enrichment processes in FAp. Theoretical investigations based...
Release time: 2025 - 05 - 15
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