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Protein-aided formation of triangular silver nanoprisms with enhanced SERS performance

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dc.contributor.authorGeng, Xien
dc.contributor.authorLeng, Weinanen
dc.contributor.authorCarter, Nathan A.en
dc.contributor.authorVikesland, Peter J.en
dc.contributor.authorGrove, Tijana Z.en
dc.contributor.departmentChemistryen
dc.contributor.departmentCivil and Environmental Engineeringen
dc.contributor.departmentInstitute for Critical Technology and Applied Scienceen
dc.contributor.departmentDuke University. Center for the Environmental Implications of Nanotechnology (CEINT)en
dc.date.accessioned2017-05-01T06:42:17Zen
dc.date.available2017-05-01T06:42:17Zen
dc.date.issued2016-05-10en
dc.description.abstractIn this work, we present a modified seed-mediated synthetic strategy for the growth of silver nanoprisms with low shape polydispersity, narrow size distribution and tailored plasmonic absorbance. During the seed nucleation step, consensus sequence tetratricopeptide repeat (CTPR) proteins are utilized as potent stabilizers to facilitate the formation of planar-twinned Ag seeds. Ag nanoprisms were produced in high yield in a growth solution containing ascorbic acid and CTPR-stabilized Ag seeds. From the time-course UV-Vis and transmission electron microscopy (TEM) studies, we postulate that the growth mechanism is the combination of facet selective lateral growth and thermodynamically driven Ostwald ripening. The resultant Ag nanotriangles (NTs) exhibit excellent surface enhanced Raman spectroscopy (SERS) performance. The enhancement factor (EF) measured for the 4-mercapto benzoic acid (4-MBA) reporter is estimated to be 3.37 × 105 in solution and 2.8 × 106 for the SERS substrate.en
dc.format.extent4182-4190en
dc.format.mimetypeapplication/pdfen
dc.identifierc6tb00844e.pdfen
dc.identifier.doihttps://doi.org/10.1039/c6tb00844een
dc.identifier.eissn2050-7518en
dc.identifier.issn2050-750Xen
dc.identifier.issue23en
dc.identifier.urihttp://hdl.handle.net/10919/77559en
dc.identifier.volume4en
dc.language.isoenen
dc.publisherRoyal Society of Chemistryen
dc.relation.ispartofRoyal Society of Chemistry Gold Open Access - 2016en
dc.rightsCreative Commons Attribution-NonCommercial 3.0 Unporteden
dc.rights.holderGeng, Xien
dc.rights.holderLeng, Weinanen
dc.rights.holderCarter, Nathan A.en
dc.rights.holderVikesland, Peter J.en
dc.rights.holderGrove, Tijana Z.en
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/en
dc.titleProtein-aided formation of triangular silver nanoprisms with enhanced SERS performanceen
dc.title.serialJournal of Materials Chemistry Ben
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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