DETERMINATION OF THE EXCITED-STATE DIPOLE-MOMENT OF FLUORENONE USING THE METHOD OF SOLVATOCHROMISM

The absorption spectra and steady state fluorescence spectra of fluore none have been obtained at room temperature for various concentrations in a series of non polar and polar solvents. The concentration effect shows two fluorescence bands, one at shorter wavelength due to monome r and another at longer wavelength due to excimer formation by triplet -triplet annihilation process. The excited state dipole moments of bot h monomer and dimer are calculated by the method of solvatochromism. A reasonable agreement has been observed between the values obtained by the method of solvatochromism and electrochromism.