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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

Paul, Alison, Fallis, Ian Andrew, Cooper, Catherine, Wess, Timothy James, Thomas, Kate, Heenan, Richard, King, Stephen and Griffiths, Peter Charles 2010. 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. Soft Matter 6 (11) , pp. 2552-2556. 10.1039/b926812j

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Abstract

Metallosurfactants comprising copper(II) (Cu(NO3)2) and zinc(II) (Zn(NO3)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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Optometry and Vision Sciences
Subjects: Q Science > Q Science (General)
Publisher: RSC
ISSN: 1744-683X
Last Modified: 03 Apr 2018 20:36
URI: http://orca.cf.ac.uk/id/eprint/9740

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