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    A general strategy for colloidal stable ultrasmall amorphous mineral clusters in organic solvents

    Access Status
    Open access via publisher
    Authors
    Sun, S.
    Gebauer, Denis
    Cölfen, H.
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Sun, S. and Gebauer, D. and Cölfen, H. 2017. A general strategy for colloidal stable ultrasmall amorphous mineral clusters in organic solvents. Chemical Science. 8 (2): pp. 1400-1405.
    Source Title
    Chemical Science
    DOI
    10.1039/c6sc02333a
    ISSN
    2041-6520
    School
    Department of Chemistry
    URI
    http://hdl.handle.net/20.500.11937/52381
    Collection
    • Curtin Research Publications
    Abstract

    © The Royal Society of Chemistry.While nature exerts precise control over the size and chemical composition of minerals, this is still a challenging task for artificial syntheses. Despite its significance, until now, there are still no reports on colloidal mineral nanoparticles in the subnanometer range. Here we developed a general gas diffusion strategy using 10,12-pentacosadiynoic acid as a ligand and ethanol as a solvent to fabricate stable amorphous mineral clusters with a core size of less than 2 nm. First discovered for CaCO3, the method was successfully extended to produce monolayer protected clusters of MgCO3, SrCO3, Eu2(CO3)3, Tb2(CO3)3, Ce2(CO3)3, Cax(PO4)y, CaC2O4 and their hybrid minerals, CaxMgy(CO3)z and Cax(CO3)y(PO4)z. All the mineral clusters can be well dispersed in organic solvents like toluene, and are stable for a long period without further crystallization. Our work paves a way for the artificial synthesis of colloidal mineral clusters, which may have various uses in both fundamental research and industry.

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