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Updated: Jun 23, 2026

Anaerobic Protein Purification and Kinetic Analysis via Oxygen Electrode for Studying DesB Dioxygenase Activity and Inhibition
Published on: October 3, 2018
Oxygen-containing diatomic dications in the gas phase
Jirí Fiser1, Klaus Franzreb, Jan Lörincík
1Faculty of Science, Department of Physical and Macromolecular Chemistry, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic.
Researchers produced oxygen-containing diatomic dications (XO2+) using oxygen ion beam sputtering. These novel gas-phase species were detected via mass spectrometry, expanding the understanding of molecular ion formation.
Area of Science:
- Physical Chemistry
- Materials Science
- Atomic and Molecular Physics
Background:
- Diatomic dications are challenging to produce and study.
- Oxygen-containing molecular ions have potential applications in various fields.
- Gas-phase ion generation techniques are crucial for fundamental research.
Purpose of the Study:
- To investigate the production of oxygen-containing diatomic dications (XO2+) using ion beam sputtering.
- To characterize these species using mass spectrometry.
- To present a theoretical study of the Beryllium oxide dication (BeO2+).
Main Methods:
- Prolonged high-current (16)O(-) ion surface bombardment of diverse sample materials.
- Gas-phase species detection using mass spectrometry.
- Theoretical calculations for the BeO2+ dication system.
Main Results:
- Successful production of various XO2+ dications, including AsO2+, GaO2+, SbO2+, AgO2+, CrO2+, and BeO2+.
- Detection of these species at half-integer m/z values.
- Observation of ion flight times on the order of ~10-5 s.
- Presentation of a detailed theoretical study for BeO2+.
Conclusions:
- Oxygen ion beam sputtering is an effective method for generating gas-phase diatomic dications.
- Mass spectrometry is suitable for detecting and characterizing these short-lived species.
- The study provides new insights into the formation and properties of XO2+ ions.
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