[Luminescence of thymine aqueous solutions at the room temperature]

The distinguishing features of luminescence of aqueous thymine solutions at room temperature (a broadening of luminescence spectra as compared with low-temperature spectra and differences between excitation and absorption spectra) are discussed. It is shown that these features are due to bimolecular photochemical reactions that lead to the formation of photoproducts (at the first stages, photoadducts) with a comparatively high luminescence ability.