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- Title
Cucurbit[7]uril‐Based Metal–Organic Rotaxane Framework for Dual‐Capture of Molecular Iodine and Cationic Potassium Ion.
- Authors
Zhang, Xiu‐Du; Zhao, Yue; Chen, Kai; Dao, Xiao‐Yao; Kang, Yan‐Shang; Liu, Yi; Sun, Wei‐Yin
- Abstract
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.
- Subjects
CARBOXYLATES; METAL-organic frameworks; POTASSIUM ions; ALKALI metal ions; IODINE; SMART materials
- Publication
Chemistry - A European Journal, 2020, Vol 26, Issue 10, p2154
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201905156