期刊
INORGANIC CHEMISTRY
卷 57, 期 21, 页码 13895-13900出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.8b02409
关键词
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资金
- MINECO (Spain) [CTQ2016-75671-P]
- Ministero dell'Istruzione, e della Ricerca (Italy)
- MINECO
- MIUR (Project PON R&I FSE-FESR 2014-2020)
- China Scholarship Council
- MINECO (Spain
- Excellence Unit Maria de Maeztu) [MDM-2015-0538]
We report two new highly crystalline metal-organic frameworks (MOFs), derived from the natural amino acids serine (1) and threonine (2), featuring hexagonal channels densely decorated with hydroxyl groups belonging to the amino acid residues. Both 1 and 2 are capable of discriminating, via solid-phase extraction, a mixture of selected chloride salts of lanthanides on the basis of their size, chemical affinity, and/or the flexibility of the network. In addition, this discrimination follows a completely different trend for 1 and 2 because of the different locations of the hydroxyl groups in each compound, which is evocative of steric complementarity between the substrate and receptor. Last but not least, the crystal structures of selected adsorbates could be resolved, offering unprecedented snapshots on the capture process and enabling structural correlations with the separation mechanism.
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