Facile Generation of Fullerene Nanoparticles by Hand-Grinding


  • We thank Prof. Kaoru Tsujii, Hokkaido University, for discussions and comments on the manuscript, Katsuyuki Uematsu, JAMSTEC, for technical assistance in SEM observations, Haruo Sekiguchi, Shimadzu Corporation, for X-ray diffraction measurements, and Katsushi Sasa, Otsuka Electronics Co., Ltd., for ζ-potential measurements.


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A top-down approach to C60 nanoparticle formation by simple hand-grinding of fullerene solids in an agate mortar is described (see figure). The resulting nanoparticles are found to disperse in water with or without the aid of a dispersing agent. In contrast to previous reports, no cytotoxicity was observed for the hand-ground C60 nanoparticles.