Nature research paper: Single Molecule Infrared Spectroscopy in the Gas Phase
Spectroscopy is a key analytical tool that provides valuable insight into molecular structure and is widely used to identify chemical samples. Tagging spectroscopy is a form of action spectroscopy in which the absorption of a single photon by a molecular ion is detected via the loss of a weakly attached, inert “tag” particle .The absorption spectrum is derived from the tag loss rate as a function of incident radiation frequency.
) molecular ion; to our knowledge the first recorded spectrum of a single gas phase polyatomic molecule. Our method’s high sensitivity revealed spectral features previously unobserved using traditional tagging methods.Our approach in principle enables analysis of multi-component mixtures by identifying constituent molecules one at a time.
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