Oxovanadium-based surfactants which display binary (surfactant/H2O) and ternary (surfactant/H2O/decanol) mesomorphism at room temp. are reported. The phase behavior of the ternary system was studied and both hexagonal and lamellar phases were identified.the investigated ligand systems are based on a tetra-anionic diamidate-diphenolate ligand which forms dianionic oxovanadium complexes with high stability in aq. environments. [on SciFinder(R)]