Novel Cage Clusters of MoS2 in the Gas Phase

Novel Cage Clusters of MoS2 in the Gas Phase

Laser evaporation of MoS2 nanoflakes gives negatively charged magic number clusters of compositions Mo13S25 and Mo13S28, which are shown to have closed-cage structures. The clusters are stable and do not show fragmentation in the post-source decay analysis even at the highest laser powers. Computati...

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Veröffentlicht in:The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Molecules, spectroscopy, kinetics, environment, & general theory, 2005-08, Vol.109 (33), p.7339-7342
Hauptverfasser: Singh, D. M. David Jeba, Pradeep, T, Bhattacharjee, Joydeep, Waghmare, U. V
Format: Artikel
Sprache:eng
Schlagworte:
Disulfides - chemistry
Disulfides - radiation effects
Gases - chemistry
Lasers
Mass Spectrometry
Molybdenum - chemistry
Molybdenum - radiation effects
Nanoparticles - chemistry
Nanoparticles - ultrastructure
Phase Transition
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Zusammenfassung:Laser evaporation of MoS2 nanoflakes gives negatively charged magic number clusters of compositions Mo13S25 and Mo13S28, which are shown to have closed-cage structures. The clusters are stable and do not show fragmentation in the post-source decay analysis even at the highest laser powers. Computations suggest that Mo13S25 has a central cavity with a diameter of 4.5 Å. The nanosheets of MoS2 could curl upon laser irradiation, explaining the cluster formation.
ISSN:1089-5639
1520-5215
DOI:10.1021/jp052454u