来源：ACS PublicationsThe synthesis of two new organoaluminum stabilized rare-earth-metal phenyl motifs is reported, featuring heterobimetallic Ln/Al tuck-over complexes Cp*Ln[C5Me4(CH2Al(μ–Ph)Ph2)] (Cp* = C5Me5, Ln = Y, La, Lu) and 9,10-dialumina-9,10-dihydroanthracenido derivatives Cp*Ln[(μ-C6H4)2Al2(μ–Ph)Ph3] (Ln = Y, Lu). Prolonged thermal treatment of Cp*2Ln(AlMe4) (Ln = Y, La, Lu) in benzene leads to stepwise methyl/phenyl exchange and then metalation of a Cp* methyl group and concomitant elimination of benzene to yield Ln/Al tuck-overcomplexes Cp*Ln[C5Me4(CH2Al(μ-Ph)Ph2)]. Isolated Cp*2Ln(...
Release time:
2026
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来源：ACS PublicationsFluorescence spectroscopy is a widely used sensor methodology that analyzes light emitted from a compound or element as it decays from an excited state. This technique is very sensitive and selective, which is ideal to characterize analytes at lower concentrations. Key example targets of significant industry and research interest include rare earth elements (REEs) such as dysprosium (Dy) and europium (Eu). These are widely used in advanced technologies including semiconductors, electric vehicle motors, lasers, and permanent magnets. Identifying new sources and responsible re...
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2026
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06
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来源：ACS PublicationsColloids, such as iron–humic acid(Fe–HA) colloids, are key vectors for the transport of potentially hazardous elements such as rare earth elements (REEs) due to their strong adsorption capacity and high mobility. These heterogeneous particles vary in size and composition and are highly sensitive to changing biogeochemical conditions (e.g., pH, redox potential). However, their transformation during transport and the resulting impact on contaminant behavior remain underexplored. In this study, batch and column experiments were combined to investigate how Fe–HA colloid heteroge...
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2026
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来源：ACS PublicationsNanocrystalline CeO2 is a chemically tunable wide-bandgap host lattice of interest for quantum information technologies due to its ability to accommodate optically- and spin-active defects. Here, we investigate CeO2 nanocrystals as hosts for near-infrared-compatible Yb3+ ions as optically active spin quantum bits (qubits). We characterize the as-synthesized Yb3+-doped CeO2 nanocrystals (0.01–10% Yb) by photoluminescence, which reveals short photoluminescence lifetimes dominated by nonradiative decay arising from surface and Ce3+-related defects. Thermal annealing at 700 ...
Release time:
2026
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