Charge Resonance and Charge Transfer Interactions
نویسنده
چکیده
Abstrtct Chrge resonance interaction in naphthalene homomd heterodimer cations is studied by photodissociation spc'troscopy ofthe charge resonance and the local excitation transitions. The resonance interaction in naphthalene dimer cation is slightly weaker than that ofa benzene dimer cation because ofpartial overlapping ofthe respective aromatic rings. A local excitationband ofthe benzene cationchromophore is obscrved in the specfium ofa naphthalcne-benzene hetero-dimcr cation at ncarly the same position as that of thc benzene dimer cation. This indicates that in spite ofits higher ionization potential the positive charge stays on the benzeiremolecule in some probability . On the basis ofthe band position ofthe charge resonance transition as well as the intensity of the local orcitation band, the probability is analyzod to be approximately 9 %. This means 9l % is localized on the naphthalene chromophore in this hetero-dimer.
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