Jet-cooled chrysene anions have been produced by attachment of slow laser-induced photoelectrons. The mols. have been studied by photodetachment-photoelectron spectroscopy using various wavelengths of the detachment laser. The adiabatic electron affinity of chrysene was directly detd. to be 0.32 ± 0.01 eV. In the S0 state of neutral chrysene two different vibrational modes are visible. Both are assigned to breathing modes of the arom. ring system. In addn., the first excited triplet state is obsd. and a singlet triplet energy gap of 2.64 ± 0.01 eV has been detd. In this state it was also possible to resolve a vibrational mode. At 355 nm an anion resonance was found that ended up in vibrationally highly excited neutral chrysene. As an explanation a special relaxation pathway is suggested. [on SciFinder(R)]     «

Jet-cooled chrysene anions have been produced by attachment of slow laser-induced photoelectrons. The mols. have been studied by photodetachment-photoelectron spectroscopy using various wavelengths of the detachment laser. The adiabatic electron affinity of chrysene was directly detd. to be 0.32 ± 0.01 eV. In the S0 state of neutral chrysene two different vibrational modes are visible. Both are assigned to breathing modes of the arom. ring system. In addn., the first excited triplet state is obs...     »