We reinvestigated the stationary singlet absorption spectrum of flavone and its transient triplet spectrum at excitation wavelengths of 266 and 355 nm in cyclohexane as solvent. The S-0-S-n spectra obtained by Density Functional/Multi Reference Configuration Interaction (DFT/MRCI) calculations agree well with experiment. The calculated intense T-1-T-n transitions qualitatively reproduce the experimental band maxima observed at similar to 330, 365 and 600 nm in cyclohexane. (C) 2009 Elsevier B.V. All rights reserved.