Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 29, Pages 8854-8858Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201800775
Keywords
cucurbit[n]uril; interfaces; polyrotaxanes; stimuli-responsive materials; supramolecular adhesives
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Funding
- Marie Curie SASSY-POL ITN programme [607602]
- Ministry of Education of Malaysia
- EPRSC [EP/F035535/1, EP/G060649/1]
- ERC (ASPiRe) [240629]
- Universiti Teknologi MARA, Malaysia
- EPSRC [EP/L027151/1, EP/G060649/1] Funding Source: UKRI
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Supramolecular building blocks, such as cucurbit[n]uril (CB[n])-based host-guest complexes, have been extensively studied at the nano- and microscale as adhesion promoters. Herein, we exploit a new class of CB[n]-threaded highly branched polyrotaxanes (HBP-CB[n]) as aqueous adhesives to macroscopically bond two wet surfaces, including biological tissue, through the formation of CB[8] heteroternary complexes. The dynamic nature of these complexes gives rise to adhesion with remarkable toughness, displaying recovery and reversible adhesion upon mechanical failure at the interface. Incorporation of functional guests, such as azobenzene moieties, allows for stimuli-activated on-demand adhesion/de-adhesion. Macroscopic interfacial adhesion through dynamic host-guest molecular recognition represents an innovative strategy for designing the next generation of functional interfaces, biomedical devices, tissue adhesives, and wound dressings.
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