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dc.contributor.authorWang, Shujun
dc.contributor.authorCole, Ivan S
dc.contributor.authorZhao, Dongyuan
dc.contributor.authorLi, Qin
dc.date.accessioned2017-07-24T23:42:02Z
dc.date.available2017-07-24T23:42:02Z
dc.date.issued2016
dc.identifier.issn2059-8521
dc.identifier.doi10.1557/adv.2016.198
dc.identifier.urihttp://hdl.handle.net/10072/101120
dc.description.abstractGraphene quantum dots (GQDs), a nano version of graphene whose interesting properties that distinguish them from bulk graphene, have recently received significant scientific attention. The quantum confinement effect referring to the size-dependence of physical and chemical properties opens great possibility in the practical applications of this material. However, tuning the size of graphene quantum dots is still difficult to achieve. Here, an edge-etching mechanism which is able to tune the size of GQDs in a quasi-continuous manner is discovered. Different from the ‘unzipping’ mechanism which has been adopted to cut bulk graphitic materials into small fragments and normally cut through the basal plane along the ‘zig-zag’ direction where epoxy groups reside, the mechanism discovered in this research could gradually remove the peripheral carbon atoms of nano-scaled graphene (i.e. GQDs) due to the higher chemical reactivity of the edge carbon atoms than that of inner carbon atoms thereby tuning the size of GQDs in a quasi-continuous fashion. It enables the facile manipulate of the size and properties of GQDs through controlling merely the reaction duration. It is also believed the as discovered mechanism could be generalized for synthesizing various sizes of GQDs from other graphitic precursors (e.g. carbon fibres, carbon nanotubes, etc).
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherCambridge University Press
dc.relation.ispartofpagefrom1
dc.relation.ispartofpageto9
dc.relation.ispartofjournalMRS Advances
dc.subject.fieldofresearchNanochemistry
dc.subject.fieldofresearchSupramolecular chemistry
dc.subject.fieldofresearchFunctional materials
dc.subject.fieldofresearchcode340303
dc.subject.fieldofresearchcode340308
dc.subject.fieldofresearchcode401605
dc.titleQuasi-Continuously Tuning the Size of Graphene Quantum Dots via an Edge-Etching Mechanism
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dc.description.versionVersion of Record (VoR)
gro.facultyGriffith Sciences, Griffith School of Engineering
gro.description.notepublicThis publication has been entered into Griffith Research Online as an Advanced Online Version.
gro.rights.copyright© 2016 Materials Research Society. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
gro.hasfulltextFull Text
gro.griffith.authorLi, Qin


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