Reversible hydrogel dynamics by physical-chemical crosslink photoswitching using a supramolecular macrocycle template

Cucurbit[8]uril catalyzes reversible photodimerization of polymer-appended guests, transitioning hydrogel crosslinking from physical to chemical networks. The process of photodimerization is partially reversible, yielding materials with hybrid emergent properties, and which can also be patterned. Ac...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2019-08, Vol.55 (67), p.9931-9934
Main Authors: Zou, Lei, Webber, Matthew J
Format: Article
Language:English
Subjects:
Crosslinking
Hydrogels
Organic chemistry
Transportation networks
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Summary:Cucurbit[8]uril catalyzes reversible photodimerization of polymer-appended guests, transitioning hydrogel crosslinking from physical to chemical networks. The process of photodimerization is partially reversible, yielding materials with hybrid emergent properties, and which can also be patterned. Accordingly, hydrogels with externally controlled network dynamics are demonstrated. Host-guest supramolecular hydrogels are prepared from light-responsive guests within a CB[8] cavitand, and the complex catalyzes reversible guest photodimerization.
ISSN:1359-7345
1364-548X
DOI:10.1039/c9cc04748d