Electrochemical, spectroscopic and electrochemiluminescent characterization of self-assembled 3-aminopropyltriethoxysilane/CdTe quantum dots hybrids on screen-printed electrodes

Simple item page
datacite.alternateIdentifier.citationElectrochimica Acta, Vol.276, N° 64-72, 2018
datacite.alternateIdentifier.doi10.1016/j.electacta.2018.04.147es_ES
datacite.creatorGarcía, Camilo
datacite.creatorNavarro, Freddy
datacite.creatorCelis, Freddy
datacite.creatorRuiz, Domingo
datacite.creatorToledo, Sofía
datacite.creatorSanhueza, Luis
datacite.creatorQuiñones, Arturo
datacite.creatorAguirre, María J.
datacite.date2018
datacite.date.issued2019-11-13
datacite.subjectElectrochemiluminescentes_ES
datacite.subjectElectrochemicales_ES
datacite.subjectSpectroscopyes_ES
datacite.titleElectrochemical, spectroscopic and electrochemiluminescent characterization of self-assembled 3-aminopropyltriethoxysilane/CdTe quantum dots hybrids on screen-printed electrodeses_ES
dc.date.accessioned2019-11-13T16:22:12Z
dc.date.available2019-11-13T16:22:12Z
dc.description.abstractThis work describes the electrochemical, spectroscopic and electrochemiluminescent (ECL) characterization of graphite screen-printed electrodes (SPE) modified with a multilayer electrostatic assembly between 3-aminopropyltriethoxysilane (APTES) and CdTe quantum dots stabilized with glutathione (GSH) as the cationic and the negative layers, respectively. The characterization of the obtained system was performed by cyclic voltammetry, electrochemical impedance spectroscopy, scanning electron microscopy and Raman spectroscopy, which confirm the homogeneous presence of CdTe quantum dots on the multilayer assembly. The electrochemiluminescent properties were measured in a potentiostat coupled with a photodiode detector, showing stable and repetitive electrochemiluminescent signals. The ECL response was studied using potassium persulfate and hydrogen peroxide as co-reactants, and the measurements were carried out at different scan rates, pH values and concentrations. The ECL properties of the studied system at specific experimental conditions demonstrated different mechanisms by changing the co-reactants associated with the electrochemical step to generate the radical species and its interaction with the SPE/APTES/CdTe (GSH) reduced system, obtaining a more intense ECL signal with H2O2 than with S2O82-. Some analytical parameters, such as the linear range and the limit of detection for SPE/APTES/CdTe (GSH) in ECL H2O2 detection, were obtainedes_ES
dc.formatPDFes_ES
dc.identifier.urihttp://repositoriodigital.uct.cl/handle/10925/2080
dc.language.isoenes_ES
dc.sourceElectrochimica Acta, Vol.276, N° 64-72, 2018es_ES
oaire.resourceTypeArtículo de Revistaes_ES
uct.catalogadorpopes_ES
uct.comunidadRecursos Naturaleses_ES
uct.facultadFacultad de Recursos Naturaleses_ES
uct.indizacionISI - Science Citation Indexes_ES
uct.indizacionSCOPUSes_ES
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
García_Navarro_Celis_Electrochemical_2018.pdf
Size:
439.86 KB
Format:
Adobe Portable Document Format
Description:
Artículo
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
803 B
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Medio Ambiente