Fig. 3. Pyrene (1 μM) II/IIII intensity ratio vs. log [Bmim][OS] within 5 wt% aqueous DESs solutions at ambient conditions (λmax = 337 nm and slit width 2.5 nm and 1 nm) respectively, [A] [Bmim][OS]–[ChCl–Gly] and [B] [Bmim][OS]–[ChCl–urea].
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