Indium tin oxide (ITO) and silicon with a thermally grown SiO2 layer (Si/SiO2) substrates have been functionalized by ferrocene bound through Sn(O)x (x=2 or 3) linkers preliminarly grafted on the surface by reaction of the terminal hydroxyl groups with tetra(tert-butoxy)tin. The two steps modification of the surface was carried out by chemical vapour deposition metathesis reaction producing a self-assembled monolayer of ferrocene. The ITO and Si/SiO2 thus functionalized have been characterized by voltammetric, amperometric, electrochemical impedance spectroscopy and scanning probe microscopy techniques which assessed the formation of a stable and rather compact covalently bound ferrocenyl monolayer with improved electron transfer properties.

Electrochemical and Surface Characterization of Dense Monolayers Grafted on ITO and Si/SiO2 Surfaces via Tetra (tert‐Butoxy) Tin Linker

PETRIZZA, LUCA;GENOVESE, DAMIANO;VALENTI, GIOVANNI;IURLO, MATTEO;FIORANI, ANDREA;PAOLUCCI, FRANCESCO;RAPINO, STEFANIA;MARCACCIO, MASSIMO
2016

Abstract

Indium tin oxide (ITO) and silicon with a thermally grown SiO2 layer (Si/SiO2) substrates have been functionalized by ferrocene bound through Sn(O)x (x=2 or 3) linkers preliminarly grafted on the surface by reaction of the terminal hydroxyl groups with tetra(tert-butoxy)tin. The two steps modification of the surface was carried out by chemical vapour deposition metathesis reaction producing a self-assembled monolayer of ferrocene. The ITO and Si/SiO2 thus functionalized have been characterized by voltammetric, amperometric, electrochemical impedance spectroscopy and scanning probe microscopy techniques which assessed the formation of a stable and rather compact covalently bound ferrocenyl monolayer with improved electron transfer properties.
Petrizza, Luca; Genovese, Damiano; Valenti, Giovanni; Iurlo, Matteo; Fiorani, Andrea; Paolucci, Francesco; Rapino, Stefania; Marcaccio, Massimo
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/569212
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