1. RODNA
  2. CONICET
  3. CONICET
Registro completo de metadatos
Campo DC Valor Lengua/Idioma
dc.creatorKlug, Joaquín-
dc.creatorPérez, Luis Alberto-
dc.creatorCoronado, Eduardo A.-
dc.creatorLacconi, Gabriela Ines-
dc.date2017-09-29T16:45:01Z-
dc.date2017-09-29T16:45:01Z-
dc.date2013-05-
dc.date2017-09-28T19:04:08Z-
dc.date.accessioned2019-04-29T15:50:03Z-
dc.date.available2019-04-29T15:50:03Z-
dc.date.issued2013-05-
dc.identifierKlug, Joaquín; Pérez, Luis Alberto; Coronado, Eduardo A.; Lacconi, Gabriela Ines; Chemical and electrochemical oxidation of silicon surfaces functionalized with APTES: the role of surface roughness in the AuNPs anchoring kinetics; American Chemical Society; Journal of Physical Chemistry C; 117; 21; 5-2013; 11317-11327-
dc.identifier1932-7447-
dc.identifierhttp://hdl.handle.net/11336/25429-
dc.identifierCONICET Digital-
dc.identifierCONICET-
dc.identifier.urihttp://rodna.bn.gov.ar:8080/jspui/handle/bnmm/303261-
dc.descriptionOxidation of Si(111) surfaces is a procedure widely used for their further functionalization with 3-aminopropyltriethoxysilane (APTES). In the present work, the formation of silicon oxide is carried out by chemical and electrochemical oxidation of the hydrogenated-silicon surfaces, giving rise to Si-OxChem and Si-OxEchem surfaces, respectively. Both surfaces are then functionalized with APTES solution to form an aminopropylsilane (APS) film, using two quite different concentrations of APTES (0.001 and 0.1% v/v), to compare two limiting situations. At the lowest APTES concentration, the comparison of the kinetics of gold nanoparticles (AuNPs) anchoring process on both surfaces is found to be quite different, not only in the initial rate of NPs anchoring but also in the maximum percentage of coverage. In contrast, the kinetics behavior is almost the same when the surfaces are modified with the highest APTES concentration, reaching the same value of surface coverage. The different or similar behavior of both surfaces is analyzed by a careful characterization of Si-OxChem and Si-OxEchem surfaces using XP spectroscopy and AFM measurements, before and after APS functionalization. The significant differences in the surface roughness of the Si-Ox samples, together with the determination of the number of −NH3 + moieties after silanization at both APTES concentrations, leads to the conclusion that the availability of −NH3 + moieties is dependent on two factors: the roughness of the Si-OxChem and Si-OxEchem surfaces as well as the concentration of the APTES solutions. When the APS layer is formed at the lowest APTES concentration, surface roughness controls the number of different types of nitrogen functional groups. In contrast, at the highest APTES concentration, the surface roughness does not have any significant role in the number of −NH3 + moieties present on both surfaces. Because the kinetics of AuNPs anchoring depends mainly on the probability of interacting with the −NH3 + groups, the above characterization allows us to explain in a consistent way the kinetics behavior observed for each particular condition of surface preparation.-
dc.descriptionFil: Klug, Joaquín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina-
dc.descriptionFil: Pérez, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina-
dc.descriptionFil: Coronado, Eduardo A.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina-
dc.descriptionFil: Lacconi, Gabriela Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina-
dc.formatapplication/pdf-
dc.formatapplication/pdf-
dc.formatapplication/pdf-
dc.formatapplication/pdf-
dc.formatapplication/pdf-
dc.languageeng-
dc.publisherAmerican Chemical Society-
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/jp212613f-
dc.relationinfo:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/jp212613f-
dc.rightsinfo:eu-repo/semantics/restrictedAccess-
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/-
dc.sourcereponame:CONICET Digital (CONICET)-
dc.sourceinstname:Consejo Nacional de Investigaciones Científicas y Técnicas-
dc.sourceinstacron:CONICET-
dc.subjectSILICON SURFACES-
dc.subjectSURFACE FUNCTIONALIZATION-
dc.subjectGOLD NANOPARTICLES-
dc.subjectKINETICS PROCESSES-
dc.subjectOtras Ciencias Químicas-
dc.subjectCiencias Químicas-
dc.subjectCIENCIAS NATURALES Y EXACTAS-
dc.titleChemical and electrochemical oxidation of silicon surfaces functionalized with APTES: the role of surface roughness in the AuNPs anchoring kinetics-
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/publishedVersion-
dc.typeinfo:ar-repo/semantics/articulo-
Aparece en las colecciones: CONICET

Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro sencillo del ítem