Since often the non-radiative rate constant of the dye is affected by the solvent polarity while the radiative rate constant remains unaltered unless there is any change in the refractive index of the medium.
Yes, solvent polarity plays a role towards radiative rate constant. If you go from a non polar solvent to polar solvent, the TICT state dominate preferably. This causes a decrease in fluorescence QY.
Dear Banchhanidhi,
Thank you! for the answer.
But I have some doubt regarding how the preferable formation of TICT state in the polar solvents, changes the radiative rate constant? Will you please elaborate on this?
Dear T. H. Al-Noor
Thank you! for your response, Sorry, but I did not find anything after following the link you have send. I think it is the link for the online thesis reservior.
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