http://www.cnr.it/ontology/cnr/individuo/prodotto/ID47908
Self-assembled multilayers of polyalkylviologens on sulfonate-modified gold and indium-tin-oxide electrodes (Articolo in rivista)
- Type
- Label
- Self-assembled multilayers of polyalkylviologens on sulfonate-modified gold and indium-tin-oxide electrodes (Articolo in rivista) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.jelechem2005.04.003 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Zotti G.; Zecchin S.; Vercelli B.; Berlin A.; Grimoldi S.; Bertoncello R.; Milanese L. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://www.journals.elsevier.com (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- CNR-IENI; CNR-ISTM; Dip. di Scienze Chimiche, Universita` di Padova (literal)
- Titolo
- Self-assembled multilayers of polyalkylviologens on sulfonate-modified gold and indium-tin-oxide electrodes (literal)
- Abstract
- Self-assembly (SA) of polyviologens with linear alkyl spacers PVn (n = 3-10) on sulfonate-primed gold and ITO electrode surfaces
has been investigated by CV, QCM, XPS and AFM. The polymers form stable and relatively dense monolayers even from
10
?4 M PVn concentration. The viologen surface density is decreased as n is increased but for n = 10 and on alkylsulfonate-primed
surfaces a strong adsorption takes place, with decreased redox potential and very narrow cyclic voltammogram of the absorbed
layer due to organized structures on the surface.
Stable and regular electrostatically self-assembled (ESA) multilayers are built on sulfonate-primed surfaces with PV3 and polysulfonates.
From XPS analysis, the composition of the PVn/polysulfonate multilayers corresponds to a 1:1 ratio of polyanion and
polycation charges, i.e., no extra non-polymeric ion is present, independently from the alkane chain length. The rate of electron
transfer within the multilayers (diffusion coefficient = ca. 10
?9 cm2 s
?1) is higher than for analogous bulk materials.
? 2005 Elsevier B.V. All rights reserved. (literal)
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