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Table 1

Transition origin (eV) for selected neutral and protonated PAHs and PANHs.

PAH Transition PANH Transition
origin (eV) origin (eV)

Anthracene 3.431 Acridine 3.222,3
AnthraceneH+ 2.524 AcridineH+ 2.805

Phenanthrene 3.636 Phenanthridine 3.647
PhenanthreneH+ 2.088,9 PhenanthridineH+ 3.125

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