| Autor: |
Fabrizio Cattaruzza, Anna Llanes-Pallas, Andrea G. Marrani, Enrique A. Dalchiele, Franco Decker, Robertino Zanoni, Maurizio Prato, Davide Bonifazi |
| Zdroj: |
Journal of Materials Chemistry; Mar2008, Vol. 18 Issue 13, p1570-1581, 12p |
| Abstrakt: |
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 × 10−11 mol cm−2. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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