Relative hydrophobicity of equilibrium phases in biphasic systems (ionic liquid + water)

► Experimental phase diagram of system ([C10mim][BF4] + water). ► Partition of DNP-amino acids in systems ([Cnmim][BF4] + water), n = 6, 8, and 10. ► Relative hydrophobicity of phases higher for [C8mim][BF4] than for [C6mim][BF4] or [C10mim][BF4]. ► Determination of critical micelle concentration for the ionic liquids, which increases with the decrease in alkyl chain.