来源：ACS PublicationsAchieving precise stereocontrol in macromolecular synthesis under mild conditions remains a fundamental challenge in polymer chemistry. Herein, an efficient and highly syndiospecific polymerization of methyl methacrylate (MMA) is realized by using Lewis pairs composed of rare-earth (RE) aryloxides and phosphines, affording syndiotactic PMMA (up to 90.3% rr at 25 °C) with well-controlled molecular weight (near-quantitative initial efficiency, Mn up to 21.0 × 104 g/mol). This methodology exhibits broad applicability, extending to diverse methacrylate monomers such as...
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2025
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Rare Earth Element-Induced Condensation of the Block V of the Repeats-in-Toxin Domain from CyaA from Bordetella pertussis for Separations 来源：ACS PublicationsRare earth elements (REEs) are critical for the development of a range of new technologies. However, the current industrial separation processes of these metals from natural sources, recycled materials, and industrial effluents involve the large consumption of organic solvents, resulting in a sizable environmental footprint. We aim to exploit the high affinity of the block V peptide of the repeats-in-toxin (RTX) domain of the adenylate cyc...
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2025
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来源：ACS PublicationsRare earth elements (REEs), comprising lanthanides, scandium, and yttrium, are increasingly vital for advanced technologies, yet their separation remains challenging. This study presents a selective and efficient approach for cerium (Ce) recovery from REE concentrates via ex situ electrochemical oxidation coupled with solvent extraction in a continuous capillary system. Ce3+ is electrochemically oxidized to Ce4+ and subsequently extracted from La3+ using di(2-ethylhexyl)phosphoric acid (D2EHPA) in n-octane. Key extraction parameters, including capillary dimensions, flow regi...
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2025
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来源：ACS PublicationsIn summary, This work has demonstrated, for the first time, that SALI is a viable approach to open pores and gain access to OMS in RE-cluster-based MOFs. We have used Y-CU-45 as a platform for these studies, as this MOF has unique 6-connected RE6-cluster nodes, with 6 coordinatively unsaturated sites that are capped by modulators from the synthesis of this MOF, partially blocking its pores. Seven different ligands were tested for SALI experiments, and it was observed that their intrinsic acidities are critical to promoting the displacement of the original capping ligands on ...
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2025
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