We observed morphological modification of rod-shaped C60 solvate crystals using a facile hydrothermal method.The initial C60 rods were changed from smooth rods to rough rods,porous rods or pieces under different hydrothermal condi-tions.During the hydrothermal treatment,the initial samples underwent a decomposition-recrystallization process,which can be tuned by the content of alcohol in the hydrothermal solution,thereby leading to modification of the morphologi-cal properties of the initial C60 rods.In addition,the rough and porous C60 rods prepared in our work exhibit excellent photoluminescence intensities that are approximately 7 and 3 times higher than those of pure C60 powders,respectively.Our results suggest that the hydrothermal method is a potential route for fabricating fullerene materials with controllable morphologies and novel functions.