フラーレンナノ結晶の特異な形態形成と力学特性

抄録

  Nano/microcrystals of fullerenes such as C₆₀ and C₇₀ have attracted significant interest for their unique morphologies and properties. Solvated fullerene crystals with various morphologies called nanowhiskers, nanosheets, nanowires, nanorods, nanoballs, nanocubes etc. have been grown by various solution methods. A liquid-liquid interfacial precipitation (LLIP) method, using a mixture of solvents consisting of a good solvent and a poor solvent, shows great potential in the morphology control of the solvated crystals because of its facileness and versatility. The solvents play a crucial role in the control of the morphology and crystal structure with the physical properties. The subtle variation of the solvent type or solvent ratio can remarkably change the morphological and properties of the products. Recently, we found unique changes in the morphology and mechanical properties such as elastic properties in C₆₀ nanocrystals grown by the LLIP method. In this review, we show the LLIP method and our recent results on the morphology transformation in C₆₀ nanosheets and large elastic deformation in C₆₀ nanowhiskers.