The aggregation of ionic liquid-based double-tailed surfactant, 1, 3-dioctylimidazolium bromide ([Doim] Br) and its interaction with pluronic copolymer F127 were systematically investigated by nuclear magnetic resonance (NMR), surface tension, dynamic light scattering (DLS), and isothermal titration calorimetry (ITC). It was found that the [Doim] Br aggregates are composed with the alkyl chains embedded in the micellar core and with ...