CHEMISTRY OF GOLD CLUSTERS IN PLASMA GENERATED WITH MALDI, LASER DESORPTION IONISATION AND LASER ABLATION FROM VARIOUS PRECURSORS

• Authors: PENA-MÉNDEZ E. M.; PANYALA Nagender Reddy; HERNÁNDEZ-FERNAUD J. R.; PANYALA Nagender Reddy; HOUŠKA Jan; HAVEL Josef
• Year of publication: 2008
• Type: Conference abstract
• MU Faculty or unit: Faculty of Science
• Description: Common MALDI TOF MS instrumentation can be used to analyze gold species ionized in plasma by laser from GNP synthesized by chemical procedures. Gold is forming in plasma positively and negatively single charged clusters Aum + or Aum - which are also reacting with the other ions and mixed AumNan, AuCa, AuK, etc. clusters were also observed. The formation of gold hydrides, such as AuH, Au3H, and hydroxide AuOH and peroxides Au- HOOH, were also observed here for the first time. When GNP were used as a matrix for ionization of nanodiamonds, carbon-gold mixed clusters which includes C18Au, CAu2Na and C2Au2Na, and others were detected.

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