In non-polar solvents such as cyclohexane or heptane, we are observing biexponential fluorescence lifetime decay in few amine derivatives, which is an unusual observation. Could someone be able to provide some insights into this observation.
I think, Biexponential fluorescence lifetime decay in nonpolar solvents for amine derivatives could be due to multiple fluorescent species or excited-state processes like charge transfer.
Thank you Srinivasan sir for your kind response. But sir, with the non-interacting/nonpolar solvent, how is it possible to get ICT species. In general, ICT species are noticed in polar solvents due to the solute-solvent dipole interactions.
ICT species can form in nonpolar solvents if the molecule has a suitable donor-acceptor structure, even though they might be more stabilized in polar solvents. The formation of ICT states is mainly determined by the molecule's intrinsic properties rather than the solvent polarity.
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