Supramolecular Hydrophobic Aggregates in Hydrogels Partially Inhibit Ice Formation

Prevention of ice crystallization is a challenging problem with implications in diverse applications, as well as examining the fundamental low temperature physics of water. Here, we demonstrate a simple route, inspired by water confinement in antifreeze proteins, to inhibit crystallization and provi...

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Bibliographic Details
Published in:The journal of physical chemistry. B 2016-06, Vol.120 (24), p.5543-5552
Main Authors: Wiener, Clinton G, Tyagi, Madhusudan, Liu, Yun, Weiss, R. A, Vogt, Bryan D
Format: Article
Language:English
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Summary:Prevention of ice crystallization is a challenging problem with implications in diverse applications, as well as examining the fundamental low temperature physics of water. Here, we demonstrate a simple route, inspired by water confinement in antifreeze proteins, to inhibit crystallization and provide high water mobility of highly supercooled water using supramolecular hydrogels of copolymers of dimethyl­acrylamide (DMA) and 2-(N-ethyl­perfluoro­octane sulfonamido)­ethyl acrylate (FOSA). These hydrogels can suppress or inhibit freezing of their water, depending on the copolymer composition. Dynamic and static neutron scattering indicate that hydrogels using the copolymer with 22 mol % FOSA partially inhibit ice formation. This behavior is attributed to confinement (
ISSN:1520-6106
1520-5207
DOI:10.1021/acs.jpcb.6b02863