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Issue 44, 2018
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Sub-zero temperature mechanically stable low molecular weight hydrogels

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Abstract

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 extended 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, this is useful for cryopreservation.

Graphical abstract: Sub-zero temperature mechanically stable low molecular weight hydrogels

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Publication details

The article was received on 25 Jun 2018, accepted on 02 Aug 2018 and first published on 02 Aug 2018


Article type: Paper
DOI: 10.1039/C8TB01668B
Citation: J. Mater. Chem. B, 2018,6, 7274-7279
  • Open access: Creative Commons BY license
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    Sub-zero temperature mechanically stable low molecular weight hydrogels

    A. E. R. Fayter, M. I. Gibson and E. R. Draper, J. Mater. Chem. B, 2018, 6, 7274
    DOI: 10.1039/C8TB01668B

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