A contrast variation small-angle scattering study of the microstructure of 2,5-dimethyl-7-hydroxy-2,5-diazaheptadecane-toluene-butanol oil-in-water metallomicroemulsions

作者：Paul Alison^*; Fallis Ian; Cooper Catherine; Wess Timothy; Thomas Kate; Heenan Richard; King Stephen; Griffiths Peter

来源：Soft Matter, 2010, 6(11): 2552-2556.

DOI：10.1039/b926812j

Metallosurfactants comprising copper(II) (Cu(NO(3))(2)) and zinc(II) (Zn(NO(3))(2)) nitrate complexes of 2,5-dimethyl-7-hydroxy-2,5-diazaheptadecane were found to form stable oil-in-water microemulsions-metallomicroemulsions-that could solubilise toluene in the presence of butanol. A detailed contrast-variation scattering analysis, employing both neutrons and X-rays, in conjunction with pulsed-gradient spin-echo NMR and simple phase diagram construction, demonstrated that the system formed is that of a conventional microemulsion-a core comprising toluene, separated from the aqueous phase by the surfactant and co-surfactant/co-solvent. This study further demonstrates the versatility of metallosurfactants and the similarity of their physical chemistry behaviour to that of conventional surfactants.

• 出版日期2010