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Redox-active Si(100) surfaces covalently functionalised with [60]fullerene conjugates: new hybrid materials for molecular-based devices

Cattaruzza F.
•
LLANES PALLAS, ANNA
•
Marrani A.G.
altro
BONIFAZI, DAVIDE
2008
  • journal article

Periodico
JOURNAL OF MATERIALS CHEMISTRY
Abstract
Herein, we report the covalent immobilisation, through Si-C bonds, of various [60]fullerene derivatives on flat silicon surfaces following three different preparative protocols. Each synthetic strategy comprises a two-step approach that includes a pre-modification step of the Si(100) surface with an organic monolayer bearing a terminal functionality that undergoes a bond-forming reaction with a [60]fullerene synthon as characterized by X-ray photoelectron spectroscopy (XPS) measurements. Water contact angle measurements clearly showed a characteristic change of the surface hydrophobicity upon covalent immobilisation of the carbon functions. The hybrid [4b-Si(100)] surfaces, containing [60]fullerene-ferrocene fragments, were also investigated by means of cyclic voltammetry (CV), and were revealed to be exceptionally robust towards repeated reduction-oxidation cycles. Moreover, several surface-confined redox couples were observed in CH3CN solution. The surface coverage was measured to be ca. 2.5 x 10(-11) mol cm(-2).
DOI
10.1039/b717438a
SCOPUS
2-s2.0-41149132356
Archivio
http://hdl.handle.net/11368/2342724
Diritti
metadata only access
Soggetti
  • RAY PHOTOELECTRON-SPE...

  • SELF-ASSEMBLED MONOLA...

  • HYDROGEN-TERMINATED S...

  • ALKYL MONOLAYERS

  • POROUS SILICON

  • ABSORPTION SPECTROSCO...

  • MAGNETITE NANOPARTICL...

  • FERROCENE DERIVATIVES...

  • FULLERENE MONOLAYER

  • SI(111) SURFACES

  • ORGANIC CHEMISTRY

  • SUPRAMOLECULAR CHEMIS...

Web of Science© citazioni
32
Data di acquisizione
Jun 1, 2022
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