Absorption spectra of substituted biphenyl and related cations in solid argon and a comparison with photoelectron spectra
Abstract
One-photon and two-photon matrix photoionization experiments have been performed with substituted biphenyls, fluorene and 9,10-dihydrophenanthrene. Absorption spectra in the red region correlate with photoelectron spectra for a π3→π6 transition and indicate a relaxation of the dihedral angle upon ionization. Sharp ultraviolet absorption spectra are assigned to π→π* transitions for the matrix-isolated cations.