摘要
C_(60)及其他具有封闭结构的球烯(Fullerene)的产生与研究是当今化学界的热门课题。我们在自制的仪器上,以脉冲激光束在高真空中溅射单质碳样品,产生球烯的正负离子。最近又在相同条件下记录了煤、稠环芳香烃等10余种有机物的负离子质谱,发现其中许多物质均能产生球烯负离子,且质谱特征十分相似,与以往观察的正离子质谱有明显不同。实验结果揭示了球烯负离子的激光产生与样品组成和结构的关联。 实验装置另文介绍。激光波长532nm,脉冲7ns,功率密度接近10~8W/cm^2。
Coal, pitch, polycyclic aromatic hydrocarbons and other organic compounds :anthraquinone,triphenylphosphine, carbazole, purine, diphenylguanidine, phenanthroline, triazole were ablated by pulsed laser beam in high vacuum, and their products were monitored with negative ion mass spectrometry. The results showed that many organic species can generate fullerene anions, even though they consist of other non-carbon atoms such as H, O, N, P, but with at least one six-member aromatic ring. The Structures and compositions of the organic species showed a certain effect on the generation of the fullerene.
出处
《应用化学》
CAS
CSCD
北大核心
1993年第3期60-62,共3页
Chinese Journal of Applied Chemistry
基金
固体表面物理化学国家重点实验室开放课题项目
关键词
球烯负离子
激光溅射
质谱
fullerene anion ,formation laser ablation ,mass spectrometry
