The lamellar liquid crystalline phases composed of either imidazolium salt, the hydrophilic 1-butyl-3-methylimidazolium tetrafluoroborate (bmim-BF4) or the hydrophobic 1-butyl-3-methylimidazolium hexafluorophosphate (bmim-PF6), in aqueous solution of Brij-30 (tetraethylene glycol lauryl ether, C12E4) have been assembled at a constant temperature (T = 25 °C). Their elaborate structures such as the distribution of hydrophobic or hydrophilic parts of surfactant bilayer and water are revealed quantitatively by several structural parameters derived from small-angle X-ray scattering (SAXS) measurements. The effects of system composition and temperature on the lamellae are discussed with comparison to the corresponding Brij-30/water binary mixture. It concludes that the bmim-PF6 molecules tend to situate at the interface between polar and apolar regions and therefore cause a decrease of combined water amount around EO blocks. Bmim-BF4 molecules, however, like to locate themselves at water interlayers as well as in the polar domains. In addition, the pseudo-hexagonal columnar structures or micelles observed respectively at low or high temperatures are analyzed by SAXS and differential scanning calorimetry (DSC) methods.

The polypseudorotaxanes (PPRs) have been prepared by supramolecular self-assembly of β-cyclodextrins (β-CDs) threaded onto the triblock copolymers (Pluronic F127) in an ionic liquid [1-n-butyl-3-methylimidazolium hexafluorophosphate (bmimPF6)] with two different manners. Structural characterizations of the assembled PPRs are carried out in detail respectively with XRD, 13C CP/MAS NMR, 1H NMR and DSC techniques. The results obtained indicate a channel-type crystalline structure for such produced inclusion complexes (ICs). Which one will finally be included inside β-CD, F127 or bmimPF6, is related to the ethanol amount around the initially β-CD/bmimPF6 ICs. At higher ethanol concentration, F127 may squeeze bmimPF6 molecules out from β-CD and thread themselves instead into the cavity of β-CD and finally precipitate with more CDs being stacked.