Matrix Assisted and/or Laser Desorption Ionization Quadrupole Ion Trap Time-of-Flight Mass Spectrometry of WO3 Clusters Formation in Gas Phase. Nanodiamonds,Fullerene, and Graphene Oxide Matrices |
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| Authors: | Mayuri Vilas Ausekar Ravi Madhukar Mawale Pavel Pazdera Josef Havel |
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| Affiliation: | 1.Department of Chemistry, Faculty of Science,Masaryk University,Brno,Czech Republic;2.Center for Syntheses at Sustainable Conditions and Their Management, Faculty of Science, Department of Chemistry,Masaryk University,Brno,Czech Republic |
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| Abstract: | The formation of W x O y +●/-● clusters in the gas phase was studied by laser desorption ionization (LDI) and matrix assisted laser desorption ionization (MALDI) of solid WO3. LDI produced (WO3) n + ●/- ● (n = 1-7) clusters. In MALDI, when using nano-diamonds (NDs), graphene oxide (GO), or fullerene (C60) matrices, higher mass clusters were generated. In addition to (WO3) n -● clusters, oxygen-rich or -deficient species were found in both LDI and MALDI (with the total number of clusters exceeding one hundred ≈ 137). This is the first time that such matrices have been used for the generation of(WO3) n +●/-● clusters in the gas phase, while new high mass clusters (WO3) n -● (n = 12-19) were also detected. |
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