Immobilization of [60]fullerene on silicon surfaces through a calix[8]arene layer

In this work, we report the functionalization of flat Si(100) surfaces with a calix"8"arene derivative through a thermal hydrosilylation process, followed by docking with "60"fullerene. Chemical grafting of calix"8"arene on silicon substrates was evaluated by X-ray photoelectron spectroscopy, whereas host-guest immobilization of fullerene was demonstrated by atomic force microscopy and sessile drop water contact angle measurements. Surface topographical variations, modelled on the basis of calix"8"arene and "60"fullerene geometrical parameters, are consistent with the observed morphological features relative to surface functionalization and to non-covalent immobilization of "60"fullerene.