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  • Tailoring the edges of graphene quantum dots to establish localized π–π interactions with aromatic molecules

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    WangPUB514.pdf (1.934Mb)
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    Accepted Manuscript (AM)
    Author(s)
    Wang, Shujun
    Lemon, Zachary
    Cole, Ivan S
    Li, Qin
    Griffith University Author(s)
    Li, Qin
    Year published
    2015
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    Abstract
    We report a simple route combining bottom-up and top-down strategies for the synthesis of partially ring-terminated graphene quantum dots (GQDs) employing aniline for modifying the molecular structure of GQD edges. In contrast to the GQDs synthesized without introducing ring-terminals by aniline conjugation, the photoluminescence of such partially ring-terminated GQDs can be quenched by the aromatic molecules owing to the edge-localized π–π interactions. This study provides a generalizable strategy in functionalizing GQDs towards aromatic molecule sensors, as well as important insight to the effect of edge-localized π–π ...
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    We report a simple route combining bottom-up and top-down strategies for the synthesis of partially ring-terminated graphene quantum dots (GQDs) employing aniline for modifying the molecular structure of GQD edges. In contrast to the GQDs synthesized without introducing ring-terminals by aniline conjugation, the photoluminescence of such partially ring-terminated GQDs can be quenched by the aromatic molecules owing to the edge-localized π–π interactions. This study provides a generalizable strategy in functionalizing GQDs towards aromatic molecule sensors, as well as important insight to the effect of edge-localized π–π interaction in perturbing the electronic structure of GQDs.
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    Journal Title
    RSC Advances
    Volume
    5
    Issue
    51
    DOI
    https://doi.org/10.1039/c5ra04927j
    Copyright Statement
    © 2015 Royal Society of Chemistry. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal website for access to the definitive, published version.
    Subject
    Chemical sciences
    Other chemical sciences not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/124897
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    • Journal articles

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