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Bottom up approaches for amino beta-CD adsorption on gold surfaces. A comparative study

Authordc.contributor.authorGarcía, Marycarmen 
Authordc.contributor.authorBollo Dragnic, Soledad 
Authordc.contributor.authorRivas, Gustavo A. 
Authordc.contributor.authorFerreyra, Nancy F. 
Authordc.contributor.authorYáñez, Claudia 
Admission datedc.date.accessioned2016-10-26T19:20:35Z
Available datedc.date.available2016-10-26T19:20:35Z
Publication datedc.date.issued2016
Cita de ítemdc.identifier.citationElectrochimica Acta 203 (2016) 292–300es_ES
Identifierdc.identifier.other10.1016/j.electacta.2016.04.030
Identifierdc.identifier.urihttp://repositorio.uchile.cl/handle/2250/141007
Abstractdc.description.abstractThe immobilization of three amino-beta-cyclodextrin derivatives on gold surfaces via different bottom-up approaches was evaluated using cyclic voltammetry and surface plasmon resonance. Direct adsorption on gold and covalent attachment via amide bond formation with carboxylic groups of both the self assembled monolayer of 4-mercapto benzoic acid (4 -MBA) and the electrografted diazonium salt synthesized in situ from 4 -amino benzoic acid (4-ABA) were tested. Amino beta-CD with 1, 2 or 7 amine groups on the primary rim were used. The influence of the immobilization methodologies on the electrochemical properties of the resulting surfaces was studied using hydroquinone and ferricyanide as redox probes. The results indicate that the surface coverage of the molecules as well as their organization at the gold substrate depends on the number of amine groups on the primary rim of 13 -CD. A higher coverage via direct adsorption is obtained using the 7 -amino groups derivative, while the highest coverage is reached with the 2 -amino groups derivative via covalent attachment at diazonium salt electrografted surfaces. A critical discussion about the influence of different strategies used for the immobilization and the number of terminal amine groups on the 13 -CD structure is performed.es_ES
Patrocinadordc.description.sponsorshipFONDECYT (Chile) 1151329 CONICET SECyT-UNC Agencia Nacional de Promocion Cientifica y Tecnologica (ANPCYT) (Argentina) Argentina-Chile International Collaboration Grant CONICYT/MINCYT PCCI130050 CH/13/03es_ES
Lenguagedc.language.isoenes_ES
Publisherdc.publisherElsevieres_ES
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile*
Link to Licensedc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
Sourcedc.sourceElectrochimica Actaes_ES
Keywordsdc.subjectCyclodextrinses_ES
Keywordsdc.subjectGold modificationes_ES
Keywordsdc.subjectDiazonium salt electrochemistryes_ES
Keywordsdc.subjectSelf-assembled monolayerses_ES
Keywordsdc.subjectSurface plasmon resonancees_ES
Títulodc.titleBottom up approaches for amino beta-CD adsorption on gold surfaces. A comparative studyes_ES
Document typedc.typeArtículo de revistaes_ES
Catalogueruchile.catalogadorlajes_ES
Indexationuchile.indexArtículo de publicación ISIes_ES


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Attribution-NonCommercial-NoDerivs 3.0 Chile
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile