Fullerenes Covalently Anchored On Si(100): An Experimental Study

F. Cattaruzza, A. Llanes-Pallas, A. G. Marrani, E. A. Dalchiele, F. Decker, R. Zanoni, M. Prato, D. Bonifazi,
AIP Conf. Proc. 2009, 1148, 725-728
DOI: 10.1063/1.3225421


Various [60]fullerene derivatives were covalently anchored via a Si‐C bond to hydrogen‐terminated Si(100) following wet‐chemistry recipes. The applied reactions require a two‐step approach consisting of a pre‐modification of the Si(100) surface with an organic monolayer bearing a terminal functionality that undergoes a bond‐forming reaction with a [60]fullerene synthon. The resulting Si‐C bound hybrids were characterized by a combination of XPS, AFM, contact angle, and electrochemical analysis. The hybrid surfaces containing [60rsqb;fullerene‐ferrocene fragments are 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. 2.5×10−11molcm−2.

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