Effect of Au and Au@ag Core-Shell Nanoparticles on the SERS of Bridging Organic Molecules

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dc.contributor.authorGüzel, Remziye
dc.contributor.authorÜstündağ, Zafer
dc.contributor.authorEkşi, Haslet
dc.contributor.authorKeskin, Selda
dc.contributor.authorTaner, Bilge
dc.contributor.authorDurgun, Zeynep Gülşah
dc.contributor.authorTuran, Aybüke A. İşbir
dc.contributor.authorSolak, Ali Osman
dc.date.accessioned2020-03-26T17:47:57Z
dc.date.available2020-03-26T17:47:57Z
dc.date.issued2010
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractGold nanoparticles (AuNPs) with about 6 nm size were produced and stabilized with mercaptopropionic acid (MPA) film to produce a monolayer protected cluster (MPC) of AuS(CH2)(2)COOH. 4-Aminothiophenol (ATP) molecules were introduced to the activated carboxylic acid ends of the film surrounding the AuNPs to produce AuS(CH2)(2)CONHPhSH MPC. These modified AuNPs were again self-assembled with Au@Ag core-shell bimetallic nanoparticles via the -SH groups to produce an organic bridge between Au and Au@Ag metallic nanoparticles. An unusually strong enhancement of the Raman signals was observed and assigned to the plasmon coupling between the AuNPs and Au@Ag NPs bridged assembly. Formation of AuS(CH2)(2)COOH and AuS(CH2)(2)CONHPhSH clusters and AuS(CH2)(2)CONHPhS(Au@Ag) assembly is confirmed by UV-Vis, reflection-absorption IR spectroscopy (RAIRS) and X-ray photoelectron spectroscopy (XPS), as well as by TEM analysis. The SERS activity of the AuNPs and Au@Ag NPs was tested using the HS(CH2)(2)CONHPhSH molecule as a probe to compare the effectiveness of monometallic and bimetallic systems. SERS spectra show that Au@Ag bimetallic nanoparticles are very effective SERS-active substrates.en_US
dc.description.sponsorshipAnkara UniversityAnkara University [09B4240012]; TUBITAKTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [109T633]en_US
dc.description.sponsorshipThis work was supported by Ankara University as a BAP Project with a Grant number 09B4240012, and TUBITAK project with a number of 109T633. We thank Dr. Ayten Celik Aktas for obtaining TEM images. We thank Dr. Ugur Tamer and Erhan Temur for obtaining SERS spectra of the MPCs.en_US
dc.identifier.citationGüzel, R., Üstündağ, Z., Ekşi, H., Keskin, S., Taner, B., Durgun, Z. G., Turan, A. A. İ., Solak, A. O., (2010). Effect of Au and Au@ag Core-Shell Nanoparticles on the SERS of Bridging Organic Molecules. Journal of Colloid and Interface Science, 351(1), 35-42. doi:10.1016/j.jcis.2010.07.039
dc.identifier.doi10.1016/j.jcis.2010.07.039en_US
dc.identifier.endpage42en_US
dc.identifier.issn0021-9797en_US
dc.identifier.issn1095-7103en_US
dc.identifier.issue1en_US
dc.identifier.pmid20701922en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage35en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.jcis.2010.07.039
dc.identifier.urihttps://hdl.handle.net/20.500.12395/24799
dc.identifier.volume351en_US
dc.identifier.wosWOS:000282252700005en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.institutionauthorTaner, Bilge
dc.language.isoenen_US
dc.publisherACADEMIC PRESS INC ELSEVIER SCIENCEen_US
dc.relation.ispartofJournal of Colloid and Interface Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectBimetallic nanoparticlesen_US
dc.subjectClustersen_US
dc.subjectSurface-enhanced Raman spectroscopyen_US
dc.subjectTransmission electron microscopyen_US
dc.subjectX-ray photoelectron spectroscopyen_US
dc.titleEffect of Au and Au@ag Core-Shell Nanoparticles on the SERS of Bridging Organic Moleculesen_US
dc.typeArticleen_US

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