来源：ACS PublicationsPolar intermetallics are an emerging class of thermoelectric materials whose electronic properties can be finely tuned by cation chemistry. Single crystals of Eu5–xYbxAl3Sb6 and Eu5–x–ySrxYbyAl3Sb6 were synthesized by flux methods and their structures determined by single-crystal X-ray diffraction, confirming monoclinic C2/m symmetry and an electron count near 3.5 e– per atom, consistent with polar intermetallic classification. The Al content in these phases can be increased from 3 to 4. A comparative study of polycrystalline synthesized Eu5Al4Sb6 and its Sr- and Yb-substitu...
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2026
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来源：ACS PublicationsHelical spin textures in one-dimensional magnetic chains on superconductors can enable topological superconductivity and host Majorana zero modes, independent of the presence of intrinsic spin–orbit coupling. Here, we show that gadolinium (Gd) adatoms, possessing large 4f magnetic moments when placed on a Nb(110) surface, establish indirect exchange interactions mediated by valence electrons, manifesting as Yu–Shiba–Rusinov states. By combining scanning tunneling microscopy and spectroscopy with density functional theory, we analyze the emergence of the Yu–Shiba–Rusinov stat...
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2026
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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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