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Interaction energy between fullerene molecules when immersed in nondipolar solvents

Recently we have calculated the interaction energy between fullerenes in free space. It has subsequently come to our attention that many experiments involving fullerene solutions have been realized. Here, we generalize earlier work of Robinson and March, on the reduction of the magnitude of the dispersion interaction between argon atoms in free space when part of dense liquid argon, to apply to an assembly of fullerene molecules in nondipolar solvents such as CCl4, CS2, and CSe2. The refractive index of such solvents is shown to play a major role in reducing the long-range interaction below its free-space value.