polyorganofullerene and polyhydroxyorganofullerene derivatives have the respective formulas , f -- n and f -- n -- m , in which f is a fullerene core ; e is a nucleophilic substituent ; -- oh is a hydroxy group ; n is 2 - 30 ; and m is 1 - 20 . also disclosed is a method of preparing such polyorgano - fullerene and polyhydroxyorganofullerene derivatives using polynitrofullerenes or polycyclosulfated fullerenes as intermediates .