High-resolution one- and two-photon spectra of matrix-isolated anthracene

摘要: Abstract Single-site fluorescence and one- two-photon excitation spectra of anthracene in an argon matrix at about 12 K are presented. The exhibit a resolution less than 4 cm −1 show almost no site contamination. discussed with respect to the transitions first second excited singlet state ( 1 L b ). confirm results earlier investigations that onset hidden transition lies 28000 nonpolar solvents. By choosing different sites for solvent shifts two were measured. Extrapolation these leads estimate separation between origins free molecule 500 . For one-photon absorption two-dimensional fluorescence/fluorescence spectrum is This shows case none bands observed up energy 1600 − above origine band can be assigned any confidence. All long axis polarized vibrational false transition.