A novel amphiphilic fullerene derivative with two ammonium headgroups is synthesized, and its self-organization characteristics in water in the scale ranging from nanometer to micrometer are reported. At the molecular scale, the bola-amphiphilic fullerene forms spherical vesicles. These vesicles, in turn, are placed within a thin wall producing a foamlike network in the scale-up to a few micrometers. TEM and light scattering measurements demonstrate that the mesoscopic-scale structure is self-similar and fractal with the dimension D = 1.40. The novel aggregation modes result from the hydrophobic interaction produced by the fullerene moieties exposed to water molecules by the disordered alkyl tails.
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