Show simple item record

dc.contributor.authorNICOLOSI, VALERIAen
dc.date.accessioned2014-03-28T16:49:43Z
dc.date.available2014-03-28T16:49:43Z
dc.date.issued2012en
dc.date.submitted2012en
dc.identifier.citationThompson, J., Crossley, A., Nellist, P.D., Nicolosi, V., Single-step exfoliation and chemical functionalisation of graphene and hBN nanosheets with nickel phthalocyanine, Journal of Materials Chemistry, 22, 43, 2012, 23246-23253en
dc.identifier.issn09599428en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/68370
dc.descriptionPUBLISHEDen
dc.description.abstractVersatile routes to functionalise few-layer graphene and hBN with nickel phthalocyanine (Ni-Pc) were achieved using liquid phase exfoliation and sonication methods. EDX performed on the graphene//Ni-Pc specimen showed nickel on the flake surface whilst Raman spectroscopy revealed a prominent D peak indicating the presence of basal plane defects. New Raman active modes were also found in the hBN//Ni-Pc complex. X-ray photoelectron spectroscopy showed a charge transfer for both graphene and hBN confirming that the flake edges and basal-planes were covalently functionalised by the phthalocyanine molecules. Transmission electron microscopy confirmed the only presence of single and few-layer flakes of hBN and graphene in solution, demonstrating that the exfoliation yield was not affected by the functionalisation step. We therefore proved that tuning of the electronic and optical properties of graphene and hBN nanosheets is indeed conceivable. We used the Z-scan technique to prove the nonlinear optical (NLO) behaviour of the functionalised graphene sheets. Based on such optical response, we demonstrate an optical limiting effect for nanosecond laser pulses at 532 nm, proving these materials to be a suitable candidate for photonic and optoelectronic applicationsen
dc.description.sponsorshipVN wishes to thank the European Research Council for funding through the grant 2DNanoCaps. The authors thank Beg- brokeNano for their provision of research facilitiesen
dc.format.extent23246-23253en
dc.language.isoenen
dc.relation.ispartofseriesJournal of Materials Chemistryen
dc.relation.ispartofseries22en
dc.relation.ispartofseries43en
dc.rightsYen
dc.subjectgrapheneen
dc.titleSingle-step exfoliation and chemical functionalisation of graphene and hBN nanosheets with nickel phthalocyanineen
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/nicoloven
dc.identifier.rssinternalid93182en
dc.identifier.doihttp://dx.doi.org/10.1039/c2jm34854cen
dc.rights.ecaccessrightsOpenAccess


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record