Facile synthesis of labile gold nanodiscs by the Turkevich method

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dc.contributor.authorGrasseschi D.
dc.contributor.authorde O. Pereira M.L.
dc.contributor.authorShinohara J.S.
dc.contributor.authorToma H.E.
dc.date.accessioned2024-03-12T23:58:27Z
dc.date.available2024-03-12T23:58:27Z
dc.date.issued2018
dc.description.abstract© 2018, Springer Science+Business Media B.V., part of Springer Nature.The Turkevich method has been the preferred one for synthesis of gold nanoparticles (AuNPs), owing to its apparent simplicity and facility of replacing the citrate ions on the particle surface by molecules exhibiting different functionalities. Using the most common procedure labile spherical nanoparticles are usually obtained by this method. Here, by using factorial design of experiments, we demonstrated that gold nanodiscs (AuNDs) with short aspect ratio can be generated by the Turkevich method when Au:citrate ratio is 1:1. In comparison with the CTAB capped gold nanorods (AuNR), the citrate stabilized AuNDs exhibited a more labile character, allowing fast ligand exchange reactions and easy functionalization of the nanoparticle surface. In the presence of 4-mercaptopyridine (4-mpy), the surface enhancement Raman scattering effect was 100 and 1000 times higher than the one observed for CTAB-AuNR and spherical AuNPs, respectively, increasing the 4-mpy detection limit to 2.5 × 10−9 molL−1.
dc.description.issuenumber2
dc.description.volume20
dc.identifier.doi10.1007/s11051-018-4149-y
dc.identifier.issn1388-0764
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/35563
dc.relation.ispartofJournal of Nanoparticle Research
dc.rightsAcesso Restrito
dc.subject.otherlanguageAnisotropic gold nanoparticles
dc.subject.otherlanguageFactorial design
dc.subject.otherlanguageNanobiomaterials
dc.subject.otherlanguageSurface ligand exchange
dc.subject.otherlanguageTurkevich
dc.titleFacile synthesis of labile gold nanodiscs by the Turkevich method
dc.typeArtigo
local.scopus.citations6
local.scopus.eid2-s2.0-85041415415
local.scopus.subjectFactorial design
local.scopus.subjectGold Nanoparticles
local.scopus.subjectNanobiomaterials
local.scopus.subjectSurface ligands
local.scopus.subjectTurkevich
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85041415415&origin=inward
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