On the action of ultraviolet light on C70 fullerene

C-70 was photopolymerized in solution of CCl4 under nitrogen flow by an high pressure mercury lamp. The resulting photoproduct was still soluble in common solvents and has been studied by electronic and FT-IR spectroscopy. FT-IR spectroscopy reveals a very peculiar band pattern never reported to date for C-70 photoproduct. Since this band pattern is very similar to that of C-60 photopolymer, it suggests that C-70 photoproduct should have a chemical structure very close to that assigned to C-60 photopolymer and piezopolymer. The role played by CCl4 in C-70 photopolymerization seems to be comparable to that already reported for C-60, i.e. it acts as a polymerization promoter.