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The spectroscopy and dynamics of the lowest excited states of the jet formed anthracene clusters (n<6) were investigated by fluorescence, fluorescence depletion and mass selected excitation spectroscopy. For all cluster sizes, only excimer emission was detected, indicating that the relaxation proceeds predominantly by an electron transfer between the initially excited state and an ionic state....
The electronic spectrum of laser-desorbed, jet-cooled guanine has been obtained by resonance enhanced two-photon ionization, laser induced fluorescence and hole-burning spectroscopy. Three tautomers of the molecule have been found, characterized by well-defined vibronic spectra and different excited state dynamics (fluorescence decay times of 12, 22 and 360 ns). For one of the tautomers the origin...
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