中性富勒烯分子的直接电喷雾质谱分析  

The Direct Negative-ion ESI-MS Analyses of Neutral Fullerenes

作　　者：周克瑜[1] 曹亚澄[1] 戚苓[2,3,4] 张诚 魏先文[2,3,4] 吴鸣飞 徐正[2,3,4] 

机构地区：[1]中国科学院南京土壤研究所,南京210008 [2]南京大学化学系,南京210093 [3]南京大学配位化学研究所,南京210093 [4]南京大学配位化学国家重点实验室,南京210093

出　　处：《化学学报》1997年第5期498-502,共5页Acta Chimica Sinica

基　　金：国家自然科学基金;国家教委博士点基金资助课题

摘　　要：电喷雾电离是新近发展的一种质谱技术,适用于分析在溶液中呈离子状态的物质,具有无碎片的特点.本文根据富勒烯分子的电子亲和性能,将富勒烯混合物的甲苯溶液直接进行电喷雾质谱分析,检出了C_(60),C_(70),C_(76),C_(78),C_(80),C_(82),C_(84),C_(86),C_(88),C_(90),C_(92),C_(94)和C_(96)等的负离子峰.并用萘钾作还原剂,将富勒烯混合物预先还原,制得富勒烯负离子溶液后再作电喷雾质谱分析,得到相同的结果.表明各类富勒烯分子在电喷雾过程中俘获电子的能力与被萘钾还原的能力相一致.ESI-MS is a soft ionization MS method newly developed, which can detect a sort of compounds existing as ions in solution. According to the capability of accepting electron of fullerenes, the mixtures of fullerenes in toluene may be determined directly by ESI-MS without pre-ionization. The negative-ion ESI mass spectra indicate that there have C60, C70, C76, C78, C80, C82, C84, C86, C88 , C90 , C92, C94 and C96 in the mixture of fullerenes. The same results were obtained by pre - ionization using potassium - naphthalide as reducing agent. It indicated that the ability of accepting electron of fullerenes in the process of ESI - MS is the same as in the reaction process using potassium - naphthalide as reducing agent.

关 键 词：富勒烯 质谱分析 ESI 

分 类 号：O613.71[理学—无机化学] O635.1[理学—化学]