Fig. 5. ln(F0/FQ) of pyrene (1 μM) as a function of concentration of the fluorescence quenching CPC in 120 mM [Bmim][OS] IL aqueous solution in the presence of 5 wt% DES respectively, 
[Bmim][OS]–water, 
[Bmim][OS]–[ChCl–Gly] and 
[Bmim][OS]–[ChCl–urea]. Solid lines represent the result of the linear regression analysis.
