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    An azobenzene-based photoswitchable crystal growth modifier

    250675.pdf (1.842Mb)
    Access Status
    Open access
    Authors
    Nealon, Gareth
    Brown, David
    Jones, Franca
    Parkinson, Gordon
    Ogden, Mark
    Date
    2017
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Nealon, G. and Brown, D. and Jones, F. and Parkinson, G. and Ogden, M. 2017. An azobenzene-based photoswitchable crystal growth modifier. CrystEngComm. 19 (9): pp. 1286-1293.
    Source Title
    CrystEngComm
    DOI
    10.1039/c6ce02514e
    ISSN
    1466-8033
    School
    Department of Chemistry
    URI
    http://hdl.handle.net/20.500.11937/51380
    Collection
    • Curtin Research Publications
    Abstract

    An aspartic acid functionalised azobenzene derivative is found to be a light-switchable crystal growth modifier of calcite. UV irradiation of the molecule reversibly switches it to the cis isomer, which is a significantly less effective crystal growth inhibitor than the trans isomer. Visible light, or heat switches the inhibitor back “on”. Extended irradiation degrades the inhibitor such that it is irreversibly switched “off”. It was shown that the trans isomer is preferentially absorbed on to the crystal surface, which is consistent with its greater efficacy as an inhibitor.

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