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    Impact of tunable oligophosphonates on barium sulfate crystallization

    198780.pdf (11.83Mb)
    Access Status
    Open access
    Authors
    Ogden, Mark
    Raston, C.
    Radomirovic, Tomoko
    Jones, Franca
    Date
    2014
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Ogden, Mark I. and Raston, Colin L. and Radomirovic, Tomoko and Jones, Franca. 2014. Impact of tunable oligophosphonates on barium sulfate crystallization. Crystal Growth & Design. 14 (3): pp. 1419-1429.
    Source Title
    Crystal Growth & Design
    DOI
    10.1021/cg401897n
    ISSN
    1528-7483
    Remarks

    This document is the Accepted Manuscript version of a Published Work that appeared in final form in Crystal Growth & Design, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see 10.1021/cg401897n,see http://pubs.acs.org/page/policy/articlesonrequest/index.html.

    URI
    http://hdl.handle.net/20.500.11937/9957
    Collection
    • Curtin Research Publications
    Abstract

    Calixarenes can be used as well-defined scaffolds for investigating structure–activity relationships of additives and their impact on crystallization. In this work, we present the crystal growth modification of barium sulfate by p-phosphonic acid calix[n]arenes that vary in size (n = 4, 5, 6, and 8) and thus vary in the size of the internal cavity for the same functionality in the upper rim. The tetrameric, hexameric, and octameric macrocycles induce nanoparticle formation with clear superstructure. In the case of the hexameric calix[6]arene, the initial mesocrystalline superstructure fuses over time to form almost hollow spheres, while the mesocrystals formed in the presence of the tetramer and octamer are stable over an extended period. The pentameric calix[5]arene forms more disordered aggregates of single crystals. Thermogravimetric data shows that a significant proportion of the mass of the barium sulfate-containing solid is the macrocycle, regardless of the choice of macrocycle.

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