Addition of ''living'' polymers onto C-60.

Various ''living'' polymers were grafted onto C-60. The number of arms of the so obtained ''star'' molecules can be controlled by stoechiometry and/or by varying the reactivity of the carbanion on the ''living'' chain against a double bond on the C-60. Even the oxanion of ''living'' polyethylenoxide is able to add onto the reactive double bonds on C-60. In Some conditions, the carbanions present on these alkaline salts of grafted fullerenes becomes able to initiate anionic polymerization of vinyl monomers. Using ''living'' poly(phenylvinylsulfoxide) as a precursor polymer for PA, polyacetylene chains could be attached to the fullerene.