含氢碳原子团簇的初步研究

The Role of Hydrogen Atoms in the Formation Hydrogenated Carbon Clusters

介绍直接用激光溅射芳香化合物固态样品产生的含氢磷原子团簇离子（CnH＋m），并用飞行时间质谱仪研究了其组成和结构．实验发现，在低质量区（n＝32－56）得到了具有奇偶碳原子数的含氢磷原子簇，而在高质量区（n＞100）除了得到纯碳原子簇以外，还得到了含氢碳原子簇．根据对实验结果的分析提出了两种结构模型：对低质量区的团簇，其结构为芳香基团与富勒烯笼状框架的复合体；对高质量区的团簇，其结构为蜗牛形与圆柱形的复合体．

Hydrogenated carbon cluster ions (CnH+m)were produced by direct laser ablation of solid aromatic compounds and studied with a time-of flight mass spectrometer.In the low mass region(n=32-56),the hydrogenated carbon clusters were obtained with both even and odd carbon atom numbers, while in the high mass region(n>100), the hydrogenated ones were obtained with only even carbon atom number as well as the pure carbon clusters. A structuxal model combining aromatic group and fullerene-like cage for the low mass region and a model combining snail and cylinder types for the high mass region have been suggested.