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dc.contributor.author | Ruiz Carmuega, Ana Isabel | |
dc.contributor.author | García Hernández, Celia | |
dc.contributor.author | Ortiz, Javier | |
dc.contributor.author | García Cabezón, Ana Cristina | |
dc.contributor.author | Martín Pedrosa, Fernando | |
dc.contributor.author | Sastre Santos, Ángela | |
dc.contributor.author | Rodríguez Pérez, Miguel Ángel | |
dc.contributor.author | Rodríguez Méndez, María Luz | |
dc.date.accessioned | 2020-05-29T11:37:11Z | |
dc.date.available | 2020-05-29T11:37:11Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Nanomaterials, 2019, vol. 9, n. 11. 14 p. | es |
dc.identifier.issn | 2079-4991 | es |
dc.identifier.uri | http://uvadoc.uva.es/handle/10324/40955 | |
dc.description | Producción Científica | es |
dc.description.abstract | Voltametric sensors formed by the combination of a sulfur-substituted zinc phthalocyanine (ZnPcRS) and gold nanoparticles capped with tetraoctylammonium bromide (AuNPtOcBr) have been developed. The influence of the nature of the interaction between both components in the response towards catechol has been evaluated. Electrodes modified with a mixture of nanoparticles and phthalocyanine (AuNPtOcBr/ZnPcRS) show an increase in the intensity of the peak associated with the reduction of catechol. Electrodes modified with a covalent adduct-both component are linked through a thioether bond-(AuNPtOcBr-S-ZnPcR), show an increase in the intensity of the oxidation peak. Voltammograms registered at increasing scan rates show that charge transfer coefficients are different in both types of electrodes confirming that the kinetics of the electrochemical reaction is influenced by the nature of the interaction between both electrocatalytic materials. The limits of detection attained are 0.9 × 10−6 mol∙L−1 for the electrode modified with the mixture AuNPtOcBr/ZnPcRS and 1.3 × 10−7 mol∙L−1 for the electrode modified with the covalent adduct AuNPtOcBr-S-ZnPcR. These results indicate that the establishment of covalent bonds between nanoparticles and phthalocyanines can be a good strategy to obtain sensors with enhanced performance, improving the charge transfer rate and the detection limits of voltammetric sensors. | es |
dc.format.mimetype | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | MDPI | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject.classification | Electrochemical sensors | es |
dc.subject.classification | Sensores electroquímicos | es |
dc.subject.classification | Phthalocyanine | es |
dc.subject.classification | Ftalocianina | es |
dc.subject.classification | Gold nanoparticles | es |
dc.subject.classification | Nanopartículas de oro | es |
dc.subject.classification | Catechol | es |
dc.subject.classification | Catecol | es |
dc.title | Electrochemical sensors modified with combinations of sulfur containing phthalocyanines and capped gold nanoparticles: A study of the influence of the nature of the interaction between sensing materials | es |
dc.type | info:eu-repo/semantics/article | es |
dc.rights.holder | © 2019 MDPI | es |
dc.identifier.doi | 10.3390/nano9111506 | es |
dc.relation.publisherversion | https://www.mdpi.com/2079-4991/9/11/1506 | es |
dc.peerreviewed | SI | es |
dc.description.project | Ministerio de Economía, Industria y Competitividad - Fondo Europeo de Desarrollo Regional (projects RTI2018-097990-B-I00 / CTQ2017-87102-R) | es |
dc.description.project | Junta de Castilla y Leon - Fondo Europeo de Desarrollo Regional (project VA275P18) | es |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.type.hasVersion | info:eu-repo/semantics/publishedVersion | es |
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