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| C84 fullerene ： ウィキペディア英語版 |
Higher fullerenes
Higher fullerenes are fullerene molecules consisting of more than 70 carbon atoms. They are cage-like fused-ring structures made of hexagons and pentagons, with a carbon atom at the vertices of each polygon and a bond along each polygon edge.
==Synthesis==
In 1990, W. Krätchmer and D. R. Huffman's developed a simple and efficient method which boosted the fullerene research. In this technique, carbon soot is produced from two high-purity graphite electrodes by igniting an arc discharge between them in an inert atmosphere (helium gas). Alternatively, soot is produced by laser ablation of graphite or pyrolysis of aromatic hydrocarbons. Fullerenes are extracted from the soot by dissolving it in appropriate organic solvents followed by chromatography.〔Katz, 369-370〕 Milligram amounts of higher fullerenes can be obtained with this method in the laboratory and are available commercially for C76, C78 and C84.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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