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dc.contributor.authorCueto, Maite-
dc.contributor.authorPiedrahita, Mauricio-
dc.contributor.authorCaro Salazar, Carlos Alberto-
dc.contributor.authorMartínez-Haya, Bruno-
dc.contributor.authorSanz, Mikel-
dc.contributor.authorOujja, M.-
dc.contributor.authorCastillejo, Marta-
dc.date.accessioned2014-11-13T12:30:17Z-
dc.date.available2014-11-13T12:30:17Z-
dc.date.issued2014-05-08-
dc.identifier.citationJournal of Physical Chemistry C 118, 11432−11439 (2014)es_ES
dc.identifier.issn1932-7447-
dc.identifier.urihttp://hdl.handle.net/10261/107554-
dc.description8 pags. ; 6 figs.es_ES
dc.description.abstractPlatinum nanomaterials are the focus of great expectations to expand the reach of modern sensor technology. In this work, we have evaluated the ability of different types of platinum nanoparticles to enhance the response of analytical techniques based on optical excitation methods, namely nanoparticle-assisted laser esorption/ionization (NALDI), Raman scattering (SERS), and infrared absorption (SEIRA). Physical (laser ablation) and chemical (redox) methods of synthesis have been employed to produce spherical particles with sizes ranging from a few to tens of nanometers, stabilized with different coating agents. The nanoparticles have then been tested as active substrate materials to enhance the sensitivity of NALDI of a model peptide (angiotensin I) and a synthetic polymer (PEG600) and those of SERS and SEIRA of a common chromophore (rhodamine 6G). A fairly similar overall. © 2014 American Chemical Society performance is found for nanoparticles homogeneous in size synthesized by chemical reduction as for heterogeneous sets of particles produced either chemically or by laser ablation in solution. These results indicate that size monodispersity is not crucial to attain enhancement effects. Quantitative differences in the relative NALDI, SERS, and SEIRA responses are attributed to the different roughness and porosity of the nanoparticles. The use of a low weight coating agent for nanoparticle stabilization also leads to a better performance compared to bulkier polymeric coatings.es_ES
dc.description.sponsorshipFunding from the Ministry of Science and Innovation of Spain (MICINN) under Projects CSD2007-00058, CTQ2010-15680, and CTQ2012-32345 and from Junta de Andalucia and FEDER under Project P09-FQM-4938 is acknowledged. M.O. and M.S. thank CSIC and CAM Geomateriales S2009/MAT 1629), respectively, for contracts.es_ES
dc.language.isoenges_ES
dc.publisherAmerican Chemical Societyes_ES
dc.relationS2009/MAT-1629/Geomateriales-
dc.relation.isversionofPostprint-
dc.rightsopenAccesses_ES
dc.titlePlatinum Nanoparticles as Photoactive Substrates for Mass Spectrometry and Spectroscopy Sensorses_ES
dc.typeartículoes_ES
dc.identifier.doi10.1021/jp500190m-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1021/jp500190mes_ES
dc.identifier.e-issn1932-7455-
dc.contributor.funderMinisterio de Ciencia e Innovación (España)-
dc.contributor.funderJunta de Andalucía-
dc.contributor.funderConsejo Superior de Investigaciones Científicas (España)-
dc.contributor.funderComunidad de Madrid-
dc.relation.csices_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100004837es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003339es_ES
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