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 CH(3)CN solution. The surface coverage was measured to be ca. 2.5 x 10(-11) mol cm(-2).

Redox-active Si(100) surfaces covalently functionalised with [60]fullerene conjugates: new hybrid materials for molecular-based devices / Fabrizio, Cattaruzza; Anna Llanes, Pallas; Marrani, Andrea Giacomo; Enrique A., Dalchiele; Decker, Franco; Zanoni, Robertino; Maurizio, Prato; Davide, Bonifazi. - In: JOURNAL OF MATERIALS CHEMISTRY. - ISSN 0959-9428. - STAMPA. - 18:13(2008), pp. 1570-1581. [10.1039/b717438a]

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

MARRANI, Andrea Giacomo;DECKER, Franco;ZANONI, Robertino;
2008

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 CH(3)CN solution. The surface coverage was measured to be ca. 2.5 x 10(-11) mol cm(-2).
2008
absorption spectroscopy; alkyl monolayers; ferrocene derivatives; fullerene monolayer; hydrogen-terminated silicon; magnetite nanoparticles; porous silicon; ray photoelectron-spectroscopy; self-assembled monolayers; si(111) surfaces
01 Pubblicazione su rivista::01a Articolo in rivista
Redox-active Si(100) surfaces covalently functionalised with [60]fullerene conjugates: new hybrid materials for molecular-based devices / Fabrizio, Cattaruzza; Anna Llanes, Pallas; Marrani, Andrea Giacomo; Enrique A., Dalchiele; Decker, Franco; Zanoni, Robertino; Maurizio, Prato; Davide, Bonifazi. - In: JOURNAL OF MATERIALS CHEMISTRY. - ISSN 0959-9428. - STAMPA. - 18:13(2008), pp. 1570-1581. [10.1039/b717438a]
File allegati a questo prodotto
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/227474
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 33
  • ???jsp.display-item.citation.isi??? 33
social impact