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    Thermal annealing behaviour and gel to crystal transition of a low molecular weight hydrogelator

    248295.pdf (2.673Mb)
    Access Status
    Open access
    Authors
    Barker, Emily
    Martin, A.
    Garvey, C.
    Goh, Ching
    Jones, Franca
    Mocerino, Mauro
    Skelton, B.
    Ogden, Mark
    Becker, Thomas
    Date
    2017
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Barker, E. and Martin, A. and Garvey, C. and Goh, C. and Jones, F. and Mocerino, M. and Skelton, B. et al. 2017. Thermal annealing behaviour and gel to crystal transition of a low molecular weight hydrogelator. Soft Matter. 13 (5): pp. 1006-1011.
    Source Title
    Soft Matter
    DOI
    10.1039/c6sm02431a
    ISSN
    1744-683X
    School
    Nanochemistry Research Institute
    URI
    http://hdl.handle.net/20.500.11937/50852
    Collection
    • Curtin Research Publications
    Abstract

    The thermal annealing behaviour of an electrolyte-triggered calixarene hydrogelator is found to depend strongly on the specific metal chloride used. While the lithium chloride gel showed typical gel-sol transitions as a function of temperature, the magnesium chloride gel was found to repeatedly strengthen with heat-cool cycles. Structural investigations using small-angle neutron scattering, and scanning probe microscopy, suggest that the annealing behaviour is associated with a change in morphology of the fibrous structures supporting the gel. On prolonged standing at room temperature, the magnesium chloride gel underwent a gel-crystal transition, with the collapsing gel accompanied by the deposition of crystals of a magnesium complex of the proline-functionalised calix[4]arene gelator.

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