Abstract
Abstract A theoretical expression for the solvent fluorescence spectral shifts of a neutral solute molecule has been developed by following the same treatment as in Abe’s expression for solvent absorption spectral shifts (Bull. Chem. Soc. Jpn., 54, 327 (1981); 58, 3415 (1985)). Compared with all previous applicable expressions being applied to only polar solute molecules, the present expression has the advantage that it can be applied to not only the polar solute molecules but also nonpolar solute molecules. The polarizabilities of the ground and excited states concerning fluorescence are treated as being different from the corresponding values concerning absorption. Applications to nonpolar solute molecules are successfully presented.
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