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

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Author(s)
Wang, Shujun
Lemon, Zachary
Cole, Ivan S
Li, Qin
Griffith University Author(s)
Year published
2015
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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 ...
View more >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.
View less >
View more >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.
View less >
Journal Title
RSC Advances
Volume
5
Issue
51
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