Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 13, Pages 5355-5358Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201916041
Keywords
cucurbiturils; host-guest systems; molecular separations; nonporous adaptive crystals; supramolecular chemistry
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Funding
- National Natural Science Foundation of China [21434005, 91527301]
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The production of high purity toluene and pyridine is of significance in both industrial production and synthetic chemistry. The present protocols available to separate toluene/pyridine mixtures are several energy-intensive distillation methods, which are not environmentally friendly and cost-effective. Herein, we provide an energy-efficient and simple adsorptive separation protocol using nonporous adaptive crystals of cucurbit[6]uril (Q[6]). Q[6] crystals separate pyridine from toluene/pyridine mixtures with nearly 100 % purity. Furthermore, removal of the guest from guest-loaded Q[6] leads to the guest-free cucurbit[6]uril, which can be recycled without losing performance.
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