Cso as Co-catalyst for Polymerization

Addition of Linear Poiymer Chains on Piurifunctionai Fuiierene Derivatives 

Several parameters have to be taken into account for the preparation of well-defined stars by reacting suitably end-functionaUzed polymer chains with piurifunctionai fullerene derivatives. The number of functional groups on these latter has to be precisely known and be the same on aU the fullerene molecules, as the 

Fullerene-derived star-burst conjugated polymers have been prepared by nucleophilic substitution of the tertiary NO2 groups (used as good leaving groups) of the hexanitrofullerene C6o(N02)6 with aniBne, oUgoanUine, and polyanduie [108,109], 

Photo-excitation of the hexa(oligoanilino)[60]fullerene leucoemeraldines induced intramolecular electron-transfer from benzenoid moieties of oligoaniline arms to the Ciso cage, which regenerated the emeraldine structure in oligoaniline arms. 

This substantiated the capability of the fuUerene cage to accept multiple electrons during the irradiation process [110]. However, this conclusion is a little surprising considering the number of opened double bonds on the fuUerene and the resulting decrease in its electron affinity. 

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