The interstellar chemistry of PAH cations

Details The interstellar chemistry of PAH cations The interstellar chemistry of PAH cations

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998natur.391..259s&link_type=abstract

Nature, vol. 391, p. 259, 260

Physics

53

Interstellar Chemistry, Stellar Spectra, Absorption Spectra, Polycyclic Aromatic Hydrocarbons, Cations, Vapor Phases, Interstellar Matter, Hydrogen, Chemical Reactions

Scientific paper

We report a laboratory study of the chemical reactivity of the PAH cations C6H6(+), C10H8(+), and C16H10(+) in the gas phase. We find that these PAH cations are very reactive, and are therefore unlikely to survive in high abundances in the interstellar medium. Rather, such molecules will react rapidly with hydrogen, and we therefore suggest that the resulting protonated PAH cations (and species derived from them) should become the focus of future searches for a correspondence between molecular absorption features and diffuse interstellar bands.

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