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    Aspartic acid as a crystal growth catalyst

    20393_downloaded_stream_381.pdf (46.66Kb)
    Access Status
    Open access
    Authors
    Piana, Stefano
    Jones, Franca
    Gale, Julian
    Date
    2007
    Type
    Journal Article
    
    Metadata
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    Citation
    Piana, S. and Jones, F. and Gale, J. D.. 2007. Aspartic acid as a crystal growth catalyst. CrystEngComm 9: 1187-1191.
    Source Title
    CrystEngComm
    DOI
    10.1039/b708260f
    School
    Department of Applied Chemistry
    Remarks

    Additional Information provides a link to the published version.

    URI
    http://hdl.handle.net/20.500.11937/8542
    Collection
    • Curtin Research Publications
    Abstract

    Ion desolvation is an important kinetic step in the growth of divalent ionic crystals - a category that encompasses numerous materials relevant to biomineralization. It has recently been shown for one such divalent ionic crystal that the rate-limiting desolvation of the cation can be assisted by the anion and that this process can be surface specific. Here we show that even a simple biological molecule, such as aspartic acid, can have a measurable catalytic effect on barite crystal growth and that this effect is related to the lowering of the activation barrier for cation desolvation. We therefore suggest that growth rate enhancement on specific faces through catalysis of the cation desolvation step may be a viable mechanism for the positive control of biomineralization.

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