来源：ACS PublicationsThe fluorescence properties of metal–organic frameworks (MOFs) are traditionally influenced by organic ligands, making the role of metal nodes, especially rare-earth centers in isostructural MOFs variants, a relatively understudied area. Herein, this study reports two isostructural bimetallic MOFs with identical organic ligand components but distinct rare-earth centers (La3+ and Eu3+). Photophysical analyses reveal that the choice of rare-earth ion dictates divergent fluorescent behaviors, including distinct quenching pathways and emission intensities. Significantly, these d...
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2026
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来源：ACS PublicationsThe reactions of RE(CH2SiMe3)3(THF)2 with N,N-dimethylethyl-functionalized 5,6,7,8-tetrahydroquinolin-8-amino ligand 1 afforded a series of dinuclear rare earth metal alkyl complexes 2a–2d bearing a dianionic 5,6,7,8-tetrahydroquinolin-8-amido ligand through deprotonation and C–H bond activation processes. These dinuclear rare earth metal alkyl complexes efficiently catalyzed the selective 1,2-reduction of quinolines with ammonia borane (H3N·BH3) to give the corresponding 1,2-dihydroquinolines in high yields, which provided a mild and efficient approach for the synthesi...
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2026
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来源：ACS PublicationsRare earth elements (REEs) play a significant role in a wide range of emerging green energy and defense applications. The increasing demand urges more REE production, thereby necessitating the development of new energy-efficient extraction processing technologies. This study investigated the use of dense media separation (DMS) as a preconcentration technique for sorting REE-bearing ores prior to the conventional beneficiation step. It was demonstrated that DMS can separate most REE-bearing carbonates into the sink fraction, while silicates are separated into the float fracti...
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2026
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来源：ACS PublicationsYtterbium(III) complexes have attracted growing interest due to their unique magnetic properties and potential applications in molecular magnetism. From this perspective, the synthesis, structural characterization, and magnetic and theoretical studies of a new mononuclear Yb(III) complex, [YbI2(OPPh3)4](I3) (1), are reported. Compound 1 features a six-coordinate Yb(III) ion that adopts a distorted octahedral geometry with two axial iodide ions (I–) and four equatorial triphenylphosphine oxide (Ph3PO) ligands. Magnetic studies reveal that complex 1 exhibits entirely visible o...
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2026
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