Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 24, Pages 9309-9313Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201916515
Keywords
host-guest chemistry; nanotubes; non-covalent interactions; pillar[5]arenes; supramolecular chemistry
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Funding
- JST CREST [JP18H04510, JP18H04511]
- World Premier International Research Center Initiative (WPI), MEXT, Japan [JPMJCR18R3]
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Supramolecular chemistry in confined spaces constructed from macrocyclic molecules has attracted much attention because it can utilize the specific binding properties of macrocyclic cavities. Herein we report the preparation of length-controlled discrete tubular structures by homo-/co-assembly of rim-differentiated and peralkylamino-substituted pillar[5]arenes via hydrogen bonds and salt bridges. By dimerization and trimerization, the expanded tubes show a fivefold helical structure and stepwise binding, respectively. We found that the exchange speed of guest molecules in the tubes could be controlled by varying the tube length.
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