来源：ACS PublicationsThe escalating demand for reliable protection against high-fluence laser pulses across industrial, defense, and biomedical fields has driven intensive research into advanced optical limiting materials. A critical challenge remains the often-high operational threshold of such devices, which limits their sensitivity and practical deployment. Herein, we report the rational design and synthesis of a series of isostructural Ln3+-porphyrinic metal-organic frameworks (MOFs, Ln3+ = Gd, Tb, Er) that exhibit exceptional reverse saturable absorption (RSA). Remarkably, the erbium-based ...
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2026
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来源：ACS PublicationsRare earth elements (REEs) are critical for energy, defense, and information technologies. Their chemical similarity makes the separation of individual REEs among the most demanding problems in modern separation science. Industrial separations rely heavily on liquid–liquid extraction (LLE), but the molecular mechanisms that control selectivity, phase behavior, and transport are often inferred indirectly and consequently not well understood. Also, recently emerging concepts, such as membrane-based, electrochemical, and bio-inspired separations, bring up open questions about i...
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2026
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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(...
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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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