High mass carbon clusters from aromatic hydrocarbons observed by laser mass spectrometry
High mass carbon clusters from aromatic hydrocarbons observed by laser mass spectrometry
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通过激光质谱观察芳香烃的高质量碳簇
DOI：
10.1021/j100350a006
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
D. Hercules
中科院分区：
文献类型：
--
作者：
David N. Lineman;K. Somayajula;A. Sharkey;D. Hercules
报道了多环芳烃的激光飞行时间质谱，显示正离子，偶碳团簇到C{sub 584}{sup +}。负离子谱通过C{sub 200}{sup {minus}}显示出簇状。根据激光聚焦条件的不同，可以观察到四个不同的聚类区域。激光辐照度起着关键作用。没有观察到使用石墨和其他碳源报道的C{sub 60}{sup +}丰度大大增加。
Laser time-of-flight mass spectra of polycyclic aromatic hydrocarbons showing positive ions, even-numbered carbon clusters to C{sub 584}{sup +} are reported. Negative ion spectra show clusters through C{sub 200}{sup {minus}}. Four different clustering regions are observed, depending upon laser focus conditions. Laser irradiance plays a key role. Greatly enhanced abundance of C{sub 60}{sup +} reported by others using graphite and other sources of carbon is not observed.