The critical micelle concentration (cmc) of IL 1-butyl-3-methylimidazolium octyl sulphate in the presence and absence of 5 wt% deep eutectic solvents in aqueous solution by fluorescence and UV-vis spectroscopic methods.

DESs	cmc (mM)			Pyrene II/IIII
	Fluorescence		UV-vis
	Pyrene	1-PyCHO	Pyrene
Water	30.0	28	32	1.00
ChCl–Gly	14.46	14	14	1.12
ChCl–urea	11.36	10	12	1.50