Ionic liquid crystalline phases in 3-hexadecylimidazolium bromide and binary mixtures with 1-decanol

► 3-hexadecyl-imidazolium bromide exhibits thermotropic liquid crystalline phases. ► The peaks in XRD patterns indicate the structural order within the layers. ► Lyotropic liquid crystalline structures and self-assembly behavior studied. ► The layer spacing increases with increasing the IL content.