THE INTERACTION OF BUCKMINSTERFULLERENE WITH GAMMA-CYCLODEXTRIN

During the past few years many papers were published on the gamma-cycl odextrin - C-60 interaction. These described different procedures for the synthesis of a 2:1 inclusion complex, which can be prepared in sol id form and exists in solution only in the presence of high cyclodextr in excess as a magenta coloured solution or as a yellowish brown collo id both being metastable. The magenta solution may be stable for half a year at room temperature, then its transformation into a yellowish c olloidal solution along with the formation of a brown precipitate proc eeds within a few weeks. On longer boiling of the solutions, the parti al oxidation of fullerene with the formation of fullerol seems to be p robable.