Newly designed silver coated-magnetic, monodisperse polymeric microbeads as SERS substrate for low-level detection of amoxicillin

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dc.citation.epage138en_US
dc.citation.spage133en_US
dc.citation.volumeNumber1119en_US
dc.contributor.authorKibar, G.en_US
dc.contributor.authorTopal, A. E.en_US
dc.contributor.authorDana, A.en_US
dc.contributor.authorTuncel, A.en_US
dc.date.accessioned2018-04-12T10:54:00Z
dc.date.available2018-04-12T10:54:00Z
dc.date.issued2016-09en_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractWe report the preparation of silver-coated magnetic polymethacrylate core-shell nanoparticles for use in surface-enhanced Raman scattering based drug detection. Monodisperse porous poly (mono-2-(methacryloyloxy)ethyl succinate-co-glycerol dimethacrylate), poly (MMES-co-GDMA) microbeads of ca. 5 μm diameter were first synthesized through a multistage microsuspension polymerization technique to serve as a carboxyl-bearing core region. Microspheres were subsequently magnetized by the co-precipitation of ferric ions, aminated through the surface hydroxyl groups and decorated with Au nanoparticles via electrostatic attraction. An Ag shell was then formed on top of the Au layer through a seed-mediated growth process, resulting in micron-sized monodisperse microbeads that exhibit Raman enhancement effects due to the roughness of the Ag surface layer. The core-shell microspheres were used as a new substrate for the detection of amoxicillin at trace concentrations up to 10-8 M by SERS. The proposed SERS platform can be evaluated as a useful tool for the follow-up amoxicillin pollution and low-level detection of amoxicillin in aqueous media.en_US
dc.description.provenanceMade available in DSpace on 2018-04-12T10:54:00Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 179475 bytes, checksum: ea0bedeb05ac9ccfb983c327e155f0c2 (MD5) Previous issue date: 2016en
dc.identifier.doi10.1016/j.molstruc.2016.04.086en_US
dc.identifier.issn0022-2860
dc.identifier.urihttp://hdl.handle.net/11693/36806
dc.language.isoEnglishen_US
dc.publisherElsevieren_US
dc.relation.isversionofhttps://doi.org/10.1016/j.molstruc.2016.04.086en_US
dc.source.titleJournal of Molecular Structureen_US
dc.subjectAg nanoparticlesen_US
dc.subjectAmoxicillinen_US
dc.subjectAntibioticen_US
dc.subjectLow-level detectionen_US
dc.subjectSurface enhanced Raman scatteringen_US
dc.subjectAntibioticsen_US
dc.subjectGolden_US
dc.subjectMicrospheresen_US
dc.subjectNanomagneticsen_US
dc.subjectNanoparticlesen_US
dc.subjectPrecipitation (chemical)en_US
dc.subjectRaman scatteringen_US
dc.subjectShells (structures)en_US
dc.subjectSilveren_US
dc.subjectSubstratesen_US
dc.subjectAg nanoparticleen_US
dc.subjectAmoxicillinen_US
dc.subjectCore-shell microspheresen_US
dc.subjectCore-shell nanoparticlesen_US
dc.subjectElectrostatic attractionsen_US
dc.subjectLevel detectionsen_US
dc.subjectSurface enhanced Raman Scattering (SERS)en_US
dc.subjectSurface hydroxyl groupsen_US
dc.subjectSurface scatteringen_US
dc.titleNewly designed silver coated-magnetic, monodisperse polymeric microbeads as SERS substrate for low-level detection of amoxicillinen_US
dc.typeArticleen_US

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Institute of Materials Science and Nanotechnology (UNAM)