Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/45099
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dc.contributor.authorMachado, N. F. L.-
dc.contributor.authorRuano, C.-
dc.contributor.authorCastro, J. L.-
dc.contributor.authorMarques, M. P. M.-
dc.contributor.authorOtero, J. C.-
dc.date.accessioned2017-12-15T17:49:24Z-
dc.date.available2017-12-15T17:49:24Z-
dc.date.issued2011-01-21-
dc.identifier.urihttp://hdl.handle.net/10316/45099-
dc.description.abstractA SERS study of chromone 3-carboxylic acid adsorbed on silver colloids was undertaken, in order to assess the ability of this compound to accept electrons in charge transfer (CT) processes. Theoretical SERS intensities under photoinduced CT resonant conditions have been carried out for both the neutral and the deprotonated species allowing to conclude, by comparison with the experimental data, that the recorded SER corresponds to the anionic form of the acid linked to the metal. It was shown that the SERS-CT mechanism predominates for this particular compound, thus explaining the strong enhancement of the band at ca. 1600 cm(-1) assigned to the 8a ring stretching mode. The identification of CT processes is of the utmost importance for understanding the mechanism through which these benzopyranes may act as antioxidants.por
dc.language.isoengpor
dc.rightsopenAccesspor
dc.subjectAntioxidantspor
dc.subjectBenzopyranspor
dc.subjectCarboxylic Acidspor
dc.subjectChromonespor
dc.subjectColloidspor
dc.subjectElectronspor
dc.subjectSilverpor
dc.subjectSpectrum Analysis, Ramanpor
dc.titleChromone-3-carboxylic acid as a potential electron scavenger: a surface-enhanced Raman scattering studypor
dc.typearticle-
degois.publication.firstPage1012-8por
degois.publication.issue3por
degois.publication.titlePhysical chemistry chemical physics : PCCPpor
dc.peerreviewedyespor
dc.identifier.doi10.1039/c0cp01174f-
dc.identifier.doi10.1039/C0CP01174Fpor
degois.publication.volume13por
item.languageiso639-1en-
item.fulltextCom Texto completo-
item.grantfulltextopen-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.researchunitQFM-UC – Molecular Physical-Chemistry R&D Unit-
crisitem.author.orcid0000-0003-0380-0399-
crisitem.author.orcid0000-0002-8391-0055-
Appears in Collections:FCTUC Ciências da Vida - Artigos em Revistas Internacionais
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