Naslov
N Nanostructured organic films on gold : electrochemically assisted assembly

Autori
Petrović, Željka ; Metikoš-Huković, Mirjana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
1st Regional Symposium on Electrochemistry of South-East Europe : Book of Abstract / Horvat-Radošević, Višnja ; Mandić, Zoran ; Gojo, Miroslav - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2008, 247-247

ISBN
978-953-6894-33-8

Skup
Regional Symposium on Electrochemistry of South-East Europe (1 ; 2008)

Mjesto i datum
Rovinj, Hrvatska, 04.05.2008. - 08.05.2008

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
gold; nanostructured dodecanethiol films; dielectric properties; electron transfer reaction

Sažetak
The organization of organic molecules into thin films through self-assembly provides a facile method of preparing surfaces with a well-defined composition, structure and thickness. These films potentially enable to tailor and to optimize the surface properties for a variety of technological applications as well as for fundamental studies of surface phenomena. In the present work nanostructured films of 1-dodecanethiol onto the polycrystalline gold surface were prepared by the potential assisted self-assembly. Contact angle goniometry, surface-enhanced Raman spectroscopy, cyclic voltammetry, and impedance spectroscopy were used to investigate the monolayer properties in aqueous electrolytes. The closely packed and well ordered monolayers are stable over a wide potential range in aqueous electrolytes. Their dielectric barrier properties were evaluated by performing electrochemical measurements without and in the presence of a redox couple. The obtained results have shown that the monolayer of 1-dodecanethiol is essentially free of pinhole defects, and the electron transfer reaction takes place through tunnelling mechanism at collapsed sites in the monolayer.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo

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