Tailoring electroactive surfaces by non template molecular assembly. Towards electrooxidation of L-cysteine
Author
dc.contributor.author
Santander Nelli, Mireya
Author
dc.contributor.author
Silva, Carlos P.
Author
dc.contributor.author
Espinoza Vergara, Javier
Author
dc.contributor.author
Silva, Juan F.
Author
dc.contributor.author
Olguín, Camila F.
Author
dc.contributor.author
Cortés Arriagada, Diego
Author
dc.contributor.author
Zagal Moya, José H.
Author
dc.contributor.author
Mendizábal Emaldía, Fernando
Author
dc.contributor.author
Díez Pérez, Ismael
Author
dc.contributor.author
Pavez, Jorge
Admission date
dc.date.accessioned
2018-06-11T17:39:19Z
Available date
dc.date.available
2018-06-11T17:39:19Z
Publication date
dc.date.issued
2017
Cita de ítem
dc.identifier.citation
Electrochimica Acta 254 (2017) 201–213
es_ES
Identifier
dc.identifier.other
http://dx.doi.org/10.1016/j.electacta.2017.09.082
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/148770
Abstract
dc.description.abstract
We have prepared a nanoelectrode ensemble containing vertically aligned single walled carbon
nanotubes (SWCNTs) using a non-template molecular self-assembling strategy. We used a bottom-up
construction approach to assemble amino functionalized SWCNTs (af-SWCNTs) in a well-defined
architecture. These af-SWCNTs were linked and vertically aligned to pre-formed self-assembled
monolayers of 4-MBA. A Cobalt(II) tetracarboxyphthalocyanine (Co(COOH)4Pc) complex was covalently
bonded to external portion of af-SWCNTs to complete the
final nanoelectrode ensemble. X-ray
photoelectron spectroscopy (XPS) and Atomic Force Microcopy (AFM) confirmed the effectiveness of the
assembling steps on the gold surface starting from the Au/MBA SAMs. The system Au/4-MBA/af-SWCNTs
shows an interface with large ordered array, which exhibits a high activity for the electrooxidation of Lcysteine
(L-cys). Theoretical calculations suggest that the incorporation of the af-SWCNTs increased the
activity of the assembly to electronic transfer and it was observed that the electrooxidation reaction is
energetically favorable.
es_ES
Patrocinador
dc.description.sponsorship
FONDECYT-Chile Grants 1171449, 1140199, 1140192 and
Proyecto Basal USA 1555-VRIDEI PUBLIC 021742PI Universidad
de Santiago de Chile
MINECO CTQ2015-64579-C3-3-P f Power-
ed@NLHPC: NLHPC (ECM-02)