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An Instrument for Isomer-Specific Action Spectroscopy of Charged Clusters: Electronic Spectra of C 14 + and Ca@C 60 +
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DOI：10.1002/cmtd.70145.png)
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Abstract
En 中文
Interpreting the spectra of mixtures of different isomers is a persistent challenge in gas-phase ion spectroscopy, particularly when dealing with large molecules. The ability of our new instrument to obtain spectroscopic information on carbon-rich molecular ions in an isomer-selected fashion is demonstrated. This approach relies on coupling drift-tube ion mobility and mass spectrometry with spectroscopic interrogation in a cryogenic 3D Paul trap. The instrument provides the possibility to employ two action spectroscopy techniques: two-color resonance-enhanced photodissociation and messenger-tagging spectroscopy, which together provide a versatile experimental framework for obtaining spectroscopic fingerprints of isomer-selected molecular ions. The method is illustrated on the example of C 14 + and Ca@C 60 + . Additionally, the first demonstration of the feasibility of messenger-tagging spectroscopy using helium as messenger in a 3D Paul trap is reported.
Keywords:
action spectroscopy
cluster compounds
isomers
mass spectrometry
metallofullerenes
Journal
IF:
6.1
Papers:
104
Citations:
694
Organization
Cited Papers