Chem. J. Chinese Universities ›› 1996, Vol. 17 ›› Issue (12): 1837.
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HAO Chun-Yan1, LIU Zi-Yang1, XU Wen-Guo2, GUO Xing-Hua1, LIU Shu-Ying1
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Abstract: Anew and efficient extraction method of endohedral metallofullerenes,especially of rare-earth elements encapsulated metallofullerenes, has been reported in this paper,Soxhlet-extraction of raw soot with toluene was used in the first step to wash away most accompanying C60,C70.Then pyridine was chosen as solvent to obtain high-temperature and highpressure extract.Two kinds of extract were analysed by DFIMSand LDI-MS, the results indicate that this two-step method can provide the extract,which has the highest fraction of endohedral metallofullerenes.So it will greatly simplify the following separation and purification processes of metallofullerenes.
Key words: Metallofullerene, Soxhlet-extraction, DEI-MS, LDI-MS
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HAO Chun-Yan, LIU Zi-Yang, XU Wen-Guo, GUO Xing-Hua, LIU Shu-Ying. Two-step-method Extraction of Endohedral Metallofullerenes[J]. Chem. J. Chinese Universities, 1996, 17(12): 1837.
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http://www.cjcu.jlu.edu.cn/EN/Y1996/V17/I12/1837