Abstract
Unusual rod-shaped aggregation has been observed in acetonitrile–benzonitrile solvent mixtures. C 70 remains as monomers, small aggregates and large rod-shaped aggregates in acetonitrile compositions of <∼60%, between ∼60–75% and >∼75%, respectively. The transition of the small aggregates into large rod-shaped aggregates is unique for C 70, as its analogue, C 60, is known to form only small spherical aggregates under similar conditions. The rod-shaped C 70 aggregates could be easily separated from the solution and can be dispersed in different polar solvents including water.
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