Synthesis of Fullerene Nanowhiskers and Their Potential Applications(International Workshop on Smart Materials and Structural Systems, W03 Jointly organized by Material & Processing Division, Material & Mechanics Division, Dynamics & Control Division and

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Fullerene nanowhiskers (FNWs) are needle-like crystals composed of fullerene molecules such as C_<60>, C_<70> and their derivatives. The fullerene nanowhiskers were first discovered in a colloidal solution of PZT (lead zirconate titanate) with added C_<60> in 2001 [1]. The FNWs can be synthesized in the liquid phase at room temperature by the liquid-liquid interfacial precipitation method (LLIP method) [2]. The C_<60> nanowhiskers grow into fibers longer than 500 μm with a constant diameter ranging from about 80 nm to several hundreds nanometers, can be flexibly bent with a small curvature radius and exhibit a high electrical conductivity by heating at high temperature. The LLIP method can produce various needle-like crystals of C_<60> and C_<70> with tubular or capsular structures as well, and we have first succeeded in fabricating "C_<70> nanotubes". The C_<60> nanowhiskers are also converted to unique nano carbon tubes "fullerene shell tubes" by heating in vacuum [3]. The above nanocarbons composed of fullerenes will have a variety of applications as low-dimensional semiconductors, fuel cell electrodes, nanochannels for microreaders, catalysts and so on.
一般社団法人日本機械学会の論文
2004-09-04