两步法提取笼内金属富勒烯

Two-step-method Extraction of Endohedral Metallofullerenes

两步法提取笼内金属富勒烯郝春雁，刘子阳，徐文国，郭兴华，刘淑莹（中国科学院长春应用化学研究所，吉林大学化学系，长春，１３００２２）关键词金属富勒烯，索氏提取，ＤＥＩ－ＭＳ，ＬＤＩ－ＭＳ目前笼内包含金属的富勒烯化合物以其新颖独特的结构和性质而格外引人注...

A new 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 C_(60),C_(70).Then pyridine was chosen as solvent to obtain high-temperature and highpressure extract.Two kinds of extract were analysed by DFIMS and 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.