Comparison of the Excited-state Dipole Moments and Polarizabilities Estimated from Solvent Spectral Shifts with Those from Electrooptical Measurements

Abstract

On the assumption that the average energy for all transitions from a low-lying excited state to all other states was approximately the same as that for all transitions from the ground state to all excited states, Abe’s improved expression for the solvent spectral frequency shift (Bull. Chem. Soc. Jpn., 54, 327 (1981)) was applied to spectral data for some neutral organic molecules in solution in order to estimate their excited-state dipole moments and polarizabilities. The changes in the dipole moments and/or polarizabilities of these molecules upon excitation were compared with those obtained from electrooptical measurements. Both methods give results that are consistent.