Gas-phase observation of multiply charged C60 anions

被引:16
作者
Cammarata, V [1 ]
Guo, T [1 ]
Illies, A [1 ]
Li, LD [1 ]
Shevlin, P [1 ]
机构
[1] Auburn Univ, Dept Chem & Biochem, Auburn, AL 36849 USA
关键词
D O I
10.1021/jp044785x
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Gas-phase observation Of C-60(1-), C-60(3-), and C-60(4-) anions generated at platinum and gold electrodes and detected by electrochemical/electro spray mass spectrometry is reported. The anions were electrochemically generated from solutions Of C-60 dissolved in toluene/acetonitrile as well as from reduction Of C-60 films on gold electrode surfaces. The gas-phase observation Of C-60(3-) and C-60(4-), despite the fact that they have negative electron affinities, is a result of a Coulombic barrier to electron loss. The fact that C-60(2-) was not detected in these experiments is ascribed to its limited solubility under the reaction conditions. These studies, which demonstrate the gas-phase kinetic stability Of C-60(4-) and C-60(3-) illustrate the promise of electrochernical/electro spray mass spectrometry for the study of metastable anions.
引用
收藏
页码:2765 / 2767
页数:3
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