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Issue 16, 2014
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Evidence for the existence of crosslinked crystalline domains within cyclodextrin-based supramolecular hydrogels through sol–gel replication

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Abstract

The supramolecular hydrogel network formed from the association of poly(ethylene glycol) and α-cyclodextrin-based polypseudorotaxanes has been successfully replicated into a silica scaffold with a three-dimensional hierarchical pore structure by using a sol–gel process. The examination of the replicas indicates that the columnar polypseudorotaxane-based nanocrystallites act as crosslinkers maintaining the supramolecular hydrogel in a water-swollen state. Depending on the poly(ethylene glycol)/α-cyclodextrin formulation and the pH value, the resulting silica materials may exhibit a pore structure comprised of large mesopores (4–10 nm) interconnected by smaller ones (2–2.5 nm) in a framework where the pore walls are made-up of a microporous corona (<1.8 nm).

Graphical abstract: Evidence for the existence of crosslinked crystalline domains within cyclodextrin-based supramolecular hydrogels through sol–gel replication

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Publication details

The article was received on 18 Dec 2013, accepted on 07 Jan 2014 and first published on 14 Jan 2014


Article type: Paper
DOI: 10.1039/C3RA47765G
Citation: RSC Adv., 2014,4, 8200-8208
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    Evidence for the existence of crosslinked crystalline domains within cyclodextrin-based supramolecular hydrogels through sol–gel replication

    R. Bleta, S. Menuel, B. Léger, A. Da Costa, E. Monflier and A. Ponchel, RSC Adv., 2014, 4, 8200
    DOI: 10.1039/C3RA47765G

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