No backbone required: A supramolecular hydrogel has been synthesized from a guest-modified cyclodextrin (CD) without a polymer backbone. The β-CD forms supramolecular fibrils through host–guest interactions, and then hydrogen bonds between the CDs cross-link the fibrils to give a hydrogel. Gel-to-sol transitions can be effected by adding a competitive guest or a denaturing reagent (see example).
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Deng et al. (2007) studied this question.
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