EXTRACTION OF FULLERENES

摘要

PROBLEM TO BE SOLVED: To provide a method for extracting fluoresces from a fullerene- containing raw material with a column chromatograph, capable of simply extracting the carious fullerenes different in carbon number by preliminarily applying an impact treatment using polar solvent molecules to the fullerene- containing raw material. SOLUTION: When fullerenes are extracted from a fullerene-containing raw material with a column chromatograph, an impact treatment using polar solvent molecules is preliminarily applied to the fullerene-containing raw material. When the polar solvent is the supercritical solution of water and/or carbon dioxide, the efficiency of the fullerene extraction can further by improved. The execution of the impact treatment under a high pressure gives an effect enabling the further selective extraction of the various fullerenes. The simultaneous employment of a proper extraction solvent and a physical operation such as an ultrasonic wave application or a high speed agitation operation enables to further improve the efficiency of the fullerence extraction.