Sub-zero temperature mechanically stable low molecular weight hydrogels

Fayter, A. E.R., Gibson, M. I. and Draper, E. R. (2018) Sub-zero temperature mechanically stable low molecular weight hydrogels. Journal of Materials Chemistry B, 6, pp. 7274-7279. (doi: 10.1039/C8TB01668B) (PMID:30555698) (PMCID:PMC6238726)

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We show here a low molecular weight hydrogelator based on a functionalised-dipeptide which is stable down to temperatures of -12 °C despite being made from >99% water. This stabilty at low temperature can be lowered to ~ -40 °C by gelling water:glycerol mixtures. The temperature range is wider than that of the glycerol:water mixtures alone. The rheological properties of the gels do not change at this low temperature compared to that of gels at 25 °C. This freezing point depression offers a potentially new method of transporting gels and offers the prospect of hydrogels being used at much lower working temperatures whilst retaining the desired rheological properties, which could be useful for cryopreservation.

Item Type:Articles
Additional Information:ERD thanks the Leverhulme Trust for an Early Career Fellowship (ECF-2017-223) and the University of Glasgow for a Lord Kelvin Adam Smith Leadership Award. MIG thanks the ERC for funding (638661 and 789182).
Glasgow Author(s) Enlighten ID:Draper, Emily
Authors: Fayter, A. E.R., Gibson, M. I., and Draper, E. R.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Journal of Materials Chemistry B
Publisher:Royal Society of Chemistry
ISSN (Online):2050-7518
Published Online:02 August 2018
Copyright Holders:Copyright © 2018 The Authors
First Published:First published in Journal of Materials Chemistry B 6:7274-7279
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
3008950Aligning Self-Assembled Materials for Wearable ElectronicsEmily DraperLeverhulme Trust (LEVERHUL)ECF-2017-223Chemistry