Cucurbit[7]uril‐Based Metal–Organic Rotaxane Framework for Dual‐Capture of Molecular Iodine and Cationic Potassium Ion | Zendy

Zhang XiuDu | Zendy; Zhao Yue | Zendy; Chen Kai | Zendy; Dao XiaoYao | Zendy; Kang YanShang | Zendy; Liu Yi | Zendy; Sun WeiYin | Zendy

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Cucurbit[7]uril‐Based Metal–Organic Rotaxane Framework for Dual‐Capture of Molecular Iodine and Cationic Potassium Ion

Author(s) -

Zhang XiuDu,

Zhao Yue,

Chen Kai,

Dao XiaoYao,

Kang YanShang,

Liu Yi,

Sun WeiYin

Publication year - 2020

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.201905156

Subject(s) - rotaxane , chemistry , cationic polymerization , metal organic framework , iodine , ligand (biochemistry) , alkali metal , supramolecular chemistry , halogen , ion , metal ions in aqueous solution , metal , crystallography , polymer chemistry , crystal structure , organic chemistry , receptor , adsorption , biochemistry , alkyl

Metal–organic rotaxane frameworks (MORFs) attracted much attention in the past years for construction of intelligent functional materials. Herein, a one‐pot synthesis is reported of a three‐dimensional (3D) cucurbit[7]uril (Q[7])‐based MORF under hydrothermal conditions, namely Q[7]‐MORF‐1 , formed by encapsulating the anionic benzoate moieties of the tricarboxylate ligand into the cavity of Q[7]. Furthermore, Q[7]‐MORF‐1 shows dual‐capture capacity for iodine and K + selectively among the alkali metal ions. The captured molecular iodine is included in the cavity of Q[7] through halogen‐bonding interactions and the K + cations are positioned at the carbonyl port of the Q[7] through K−O coordination interactions.

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