Fullerenes, when dissolved in certain binary solvent mixtures are found to exhibit strong solvatochromism and an unusual chemical inertness. From UV-vis optical absorption measurements, dynamic light scattering (DLS) size measurements and chemical tests on C-60/pyridine/water mixtures, we suggest that the origin of these unusual effects is the formation of monodispersive, spherical, and chemically inert C-60 nanocapsules. Pyridine appears to act as a surfactant around fullerene molecules protecting them from chemical reagents. The hydrophobic surfactant interactions are thought to act in stabilizing the structures into chemically inert uniformly sized particles.