Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/72073
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Proton transfer voltammetry at electrodes modified with acid thiol monolayers |
Autor: | Luque, Antonio M.; Mulder, W. H.; Calvente, Juan José; Cuesta, Angel CSIC ORCID; Andreu, Rafael | Fecha de publicación: | 2012 | Editor: | American Chemical Society | Citación: | Analytical Chemistry 84: 5778- 5786 (2012) | Resumen: | By combining a description of the potential profile at electrodes coated with acid thiol monolayers with a quadratic relationship between activation energy and electrode potential, a rather simple expression for proton transfer voltammograms is derived. Our electrostatic analysis shows that proton transfer can only produce narrow voltammetric peaks when the immobilized acid groups lie close to the metal substrate. Quantitative fits of experimental voltammograms obtained with an Au(111) electrode modified with a 11-mercaptoundecanoic monolayer at pH 8.5 reveal that less than 1% of the carboxylic groups in the monolayer participate in the potential induced proton transfer process and that these groups lay close to the metal surface. A preliminary analysis of the kinetic parameters suggests that the interfacial electric field facilitates an intrinsically slow proton exchange between a proton donor and acceptor pair that are not in close contact with each other at the interface. | URI: | http://hdl.handle.net/10261/72073 | DOI: | 10.1021/ac301040r | Identificadores: | doi: 10.1021/ac301040r issn: 0003-2700 |
Aparece en las colecciones: | (IQF) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
accesoRestringido.pdf | 15,38 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
20
checked on 26-mar-2024
WEB OF SCIENCETM
Citations
21
checked on 26-feb-2024
Page view(s)
290
checked on 30-mar-2024
Download(s)
109
checked on 30-mar-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.