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Improved synthesis of concave cubic gold nanoparticles and their applications for Raman analysis of surfaces

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cris.lastimport.scopus2024-02-12T20:11:27Z
dc.abstract.enIn this contribution, we present a modification of the procedure for producing concave cubic gold (cc-Au) nanoparticles; this modification significantly increases the homogeneity of the product obtained. The synthesis of cc-Au is carried out by the slow growth of seed nanostructures in a solution containing chloroauric acid, silver nitrate, ascorbic acid and hexadecyltrimethylammonium chloride. We show that, when nanoparticles synthesized in a solution containing both chloroauric acid and copper chloride (with the molar ratio equal to ca. 10 : 1) are used as seeds (instead of seeds formed without the addition of copper), one can observe a significant increase in the homogeneity of the cc-Au nanostructures formed. The resulting cc-Au, and cc-Au@Ag nanoparticles (cc-Au covered by a nanometric layer of silver) as well, have been used as plasmonic cores in nanoresonators dedicated for shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS). To our knowledge, the SHINERS nanoresonators produced in this work display a homogeneity that is significantly better than that of any anisotropic SHINERS nanostructures previously synthesized without the subsequent complex process of purifying the nanoparticles. Concave cubic nanoparticles were about 5 times more efficient as electromagnetic nanoresonators than spherical nanostructures of a similar size formed from the same material.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorKędziora, Mateusz
dc.contributor.authorKudelski, Andrzej
dc.contributor.authorKrajczewski, Jan
dc.contributor.authorKołątaj, Karol
dc.date.accessioned2024-01-25T03:58:53Z
dc.date.available2024-01-25T03:58:53Z
dc.date.copyright2019-06-13
dc.date.issued2019
dc.description.accesstimeAT_PUBLICATION
dc.description.financeNie dotyczy
dc.description.number32
dc.description.versionFINAL_PUBLISHED
dc.description.volume9
dc.identifier.doi10.1039/C9RA03012C
dc.identifier.issn2046-2069
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/109109
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofRSC Advances
dc.relation.pages18609-18618
dc.rightsCC-BY
dc.sciencecloudnosend
dc.subject.enSERS
dc.titleImproved synthesis of concave cubic gold nanoparticles and their applications for Raman analysis of surfaces
dc.typeJournalArticle
dspace.entity.typePublication