Self-Assembled Monolayers of NH2‑Terminated Thiolates: Order, pKa, and Specific Adsorption

dc.creatorMarmisollé, Waldemar Alejandro
dc.creatorCapdevila, Daiana Andrea
dc.creatorde la Llave, Ezequiel Pablo
dc.creatorWilliams, Federico Jose
dc.creatorMurgida, Daniel Horacio
dc.date.accessioned2017-02-03T21:14:00Z
dc.date.accessioned2018-11-06T16:17:12Z
dc.date.available2017-02-03T21:14:00Z
dc.date.available2018-11-06T16:17:12Z
dc.date.created2017-02-03T21:14:00Z
dc.date.issued2013-01
dc.identifierMarmisollé, Waldemar Alejandro; Capdevila, Daiana Andrea; de la Llave, Ezequiel Pablo; Williams, Federico Jose; Murgida, Daniel Horacio; Self-Assembled Monolayers of NH2‑Terminated Thiolates: Order, pKa, and Specific Adsorption; American Chemical Society; Langmuir; 29; 17; 1-2013; 5351-5359
dc.identifier0743-7463
dc.identifierhttp://hdl.handle.net/11336/12511
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1906553
dc.description.abstractSelf-assembled monolayers (SAMs) of amino-terminated alkanethiols on Au were characterized by a combination of electrochemical (LSV, CV, and EIS) and spectroscopic (XPS and SER) techniques. Clear correlations were obtained between the apparent surface pKa values determined by impedimetric titrations and order parameters such as the content of trans conformers in the SAMs. These results contrast with previous studies that exhibit dispersions of up to 6 pH units in the reported pKa values. In addition, we determined that inorganic and organic phosphate species bind specifically to these SAMs mediating adsorption and heterogeneous electron transfer of positively charged macromolecules such as cytochrome c.
dc.languageeng
dc.publisherAmerican Chemical Society
dc.relationinfo:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/la304730q
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/la304730q
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectself-assembled monolayers
dc.subjectsurfaces
dc.titleSelf-Assembled Monolayers of NH2‑Terminated Thiolates: Order, pKa, and Specific Adsorption
dc.typeArtículos de revistas
dc.typeArtículos de revistas
dc.typeArtículos de revistas


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