CLUSTERING DYNAMICS OF FULLERENES IN C-60 C-70-CHEMICALLY MODIFIED POLY(N-VINYLCARBAZOLE)/

The clustering dynamics of fullerenes in C-60/C-70-chemically modified poly(N-vinylcarbazole) was studied by laser desorption TOF mass spect rometry. From the evolution of the mass spectra in the negative and po sitive-ion channels with increasing laser shots the fragmentation and aggregation (growth and coalescence) dynamics as well as the key role played by PVK and its dissociation products were discussed. The result s indicate that the bonds between the PVK chain and fullerene cages ar e easily broken under laser interaction and the fullerene cages ruptur ed from the chain are in active excited states favorable to the cluste ring of the cages.