Graphene Oxide/Gold Nanorod Nanocomposite for Stable Surface-Enhanced Raman Spectroscopy

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dc.contributor.authorVianna P.G.
dc.contributor.authorGrasseschi D.
dc.contributor.authorCosta G.K.B.
dc.contributor.authorCarvalho I.C.S.
dc.contributor.authorDomingues S.H.
dc.contributor.authorFontana J.
dc.contributor.authorDe Matos C.J.S.
dc.date.accessioned2024-03-13T00:53:01Z
dc.date.available2024-03-13T00:53:01Z
dc.date.issued2016
dc.description.abstract© 2016 American Chemical Society.We introduce a graphene oxide/gold nanorod nanocomposite as a surface-enhanced Raman spectroscopy (SERS) substrate that suppresses the usual temporal intensity fluctuations, commonly referred to as blinking. The temporal stability of the SERS spectra from the nanocomposite is statistically determined using the coefficient of variation of the integrated spectra. We demonstrate that, by introducing graphene oxide, the coefficient of variation from the nanocomposite is five times smaller when compared to gold nanorods without graphene oxide, which is attributed to the removal of the nanorod's surfactant from plasmonic hot spots due to graphene oxide-surfactant interaction. The resulting nanocomposite can, then, be used as a reliable substrate for precise SERS chemical analysis. The nanocomposite is, therefore, analyzed as a SERS substrate for the detection of Rhodamine 640, providing a 4-fold stability improvement relative to gold nanorods without graphene oxide, while the dye's Raman signal is enhanced both by SERS and by resonant excitation.
dc.description.firstpage1027
dc.description.issuenumber6
dc.description.lastpage1035
dc.description.volume3
dc.identifier.doi10.1021/acsphotonics.6b00109
dc.identifier.issn2330-4022
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/35962
dc.relation.ispartofACS Photonics
dc.rightsAcesso Restrito
dc.subject.otherlanguageblinking
dc.subject.otherlanguagegold nanorods
dc.subject.otherlanguagegraphene oxide
dc.subject.otherlanguagenanocomposite
dc.subject.otherlanguageSERS
dc.titleGraphene Oxide/Gold Nanorod Nanocomposite for Stable Surface-Enhanced Raman Spectroscopy
dc.typeArtigo
local.scopus.citations43
local.scopus.eid2-s2.0-84975074212
local.scopus.subjectblinking
local.scopus.subjectCoefficient of variation
local.scopus.subjectGold nanorod
local.scopus.subjectGraphene oxides
local.scopus.subjectIntensity fluctuations
local.scopus.subjectSERS
local.scopus.subjectSurface enhanced Raman spectroscopy
local.scopus.subjectSurfactant interaction
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84975074212&origin=inward
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