GAS-PHASE FAST-ATOM-BOMBARDMENT MASS-SPECTRA OF FULLERENES AND PYRENE

被引：15

作者：

TAKAYAMA, M

机构：

[1] Faculty of Pharmaceutical Sciences, Toho University, Funabashi, 274

来源：

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES | 1992年 / 121卷 / 03期

关键词：

GAS PHASE FAB; FULLERENES; PYRENE;

D O I：

10.1016/0168-1176(92)80068-C

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Mass spectra of fullerenes C60 and C70 and pyrene were obtained using the gas-phase fast atom bombardment (FAB) ionization technique using high-energy (7 keV) helium beam. Positive ion gas-phase FAB spectra of their compounds show the peaks corresponding to multiply-charged molecular ions M(z+) (z = 1-3) and abundant fragment ions, whereas the electron ionization (EI) spectra only slightly show fragment peaks. The ps-phase FAB spectral patterns of the fullerenes, consisting of the fragment peaks (C60 - C2n)z+ and (C70 - C2n)z+ (z = 1-3, n = 1-12), are similar to the corresponding collision-induced dissociation patterns. The negative ion gas-phase FAB spectrum shows the molecular ion peaks C60- and C70-, and only slightly shows fragment peaks. The results obtained indicate that gas-phase FAB mass spectrometry can be used as a new technique for the collision study of extremely stable compounds.

引用

页码：R19 / R25

页数：7

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