抄録
Fullerene C60 molecules were three-dimensionally polymerized under a high-pressure and high-temperature condition of 15 GPa at 600°C. A single crystal of 3D polymer was obtained from a 2D C60 polymer with a body centered orthorhombic symmetry. The X-ray structural analysis of the 3D polymer revealed that spherical C60 monomer molecules were substantially deformed to cuboidal shapes, each unit being bonded to eight neighboring units at the cuboidal corners to form a body centered orthorhombic lattice. The new 3D polymer was electrically conductive and showed high micro-Vickers hardness comparable to that of cubic BN.
