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

Luca Petrizza, Damiano Genovese, Giovanni Valenti, Matteo Iurlo, Andrea Fiorani, Francesco Paolucci, Stefania Rapino, Massimo Marcaccio

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
JournalElectroanalysis
DOIs
Publication statusAccepted/In press - 2016

Keywords

  • Ferrocene
  • Functionalization
  • Indium tin oxide
  • Scanning probe microscopy
  • Voltammetry

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry

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