Positively and Negatively Charged Cesium and (C60)mCsn Cluster Ions
Abstract
We report on the formation and ionization of cesium and C60Cs clusters in superfluid helium nanodroplets. Size distributions of positively and negatively charged (C60)mCsn± ions have been measured for m ≤ 7, n ≤ 12. Reproducible intensity anomalies are observed in high-resolution mass spectra. For both charge states, (C60)mCs3± and (C60)mCs5± are particularly abundant, with little dependence on the value of m. Distributions of bare cesium cluster ions also indicate enhanced stability of Cs3± and Cs5±, in agreement with theoretical predictions. These findings contrast with earlier reports on highly Cs-doped cationic fullerene aggregates which showed enhanced stability of C60Cs6 building blocks attributed to charge transfer. The dependence of the (C60)mCs3– anion yield on electron energy shows a resonance that, surprisingly, oscillates in strength as m increases from 1 to 6.
Department
Physics
Publication Date
12-23-2016
Journal Title
The Journal of Physical Chemistry C
Publisher
ACS Publications
Digital Object Identifier (DOI)
Document Type
Article
Recommended Citation
M. Renzler, L. Kranabetter, M. Goulart, P. Scheier, O. Echt, Positively and Negatively Charged Cesium and (C60)mCsn Cluster Ions, J. Phys. Chem. C 121 (2017) 10817–10823, DOI: 10.1021/acs.jpcc.6b11928, Jan 2017.