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.
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Mrzel et al. (1999) studied this question.
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