Goulart M, Zappa F, Ellis A M, Bartl P, Ralser S, Scheier P
Institut für Ionenphysik und Angewandte Physik, Innsbruck, A-6020, Austria.
Phys Chem Chem Phys. 2017 Sep 13;19(35):24197-24201. doi: 10.1039/c7cp02994b.
We report a mass spectrometric investigation of (C) clusters mixed with either methanol or ethanol clusters inside helium nanodroplets. The abundance of ion products produced by electron ionization shows marked differences compared with pure methanol/ethanol clusters without C [M. Goulart, P. Bartl, A. Mauracher, F. Zappa, A. M. Ellis and P. Scheier, Phys. Chem. Chem. Phys., 2013, 15, 3577], where clusters containing in excess of a hundred alcohol monomers were observed. In contrast, under identical conditions concerning He droplet size and alcohol pickup pressure, only a small number of alcohol molecules become attached to the fullerene ions. Our results suggest that each fullerene cluster acts as a charge sink, which hampers alcohol cluster formation, as well as intra-cluster ion-molecule reactions. The appearance of specific 'magic number' peaks suggests an enhanced probability for the attachment of small alcohol rings to (C) clusters.
我们报告了一项关于氦纳米液滴中与甲醇或乙醇团簇混合的（C）团簇的质谱研究。与不含C的纯甲醇/乙醇团簇相比，电子电离产生的离子产物丰度显示出显著差异[M. 古拉特、P. 巴特尔、A. 毛拉赫尔、F. 扎帕、A. M. 埃利斯和P. 谢埃尔，《物理化学化学物理》，2013年，第15卷，3577页]，在那里观察到含有超过一百个醇单体的团簇。相比之下，在关于氦液滴大小和醇捕获压力的相同条件下，只有少量的醇分子附着到富勒烯离子上。我们的结果表明，每个富勒烯团簇都充当电荷库，这阻碍了醇团簇的形成以及团簇内的离子 - 分子反应。特定“幻数”峰的出现表明小醇环附着到（C）团簇上的概率增加。
