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

A Paul, I Fallis, C Cooper, Timothy Wess, K Thomas, R Heenan, S King, P Griffiths

Research output: Contribution to journalArticle

2 Citations (Scopus)
13 Downloads (Pure)

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.
Original languageEnglish
Pages (from-to)2552-2557
Number of pages6
JournalSoft Matter
Volume6
Issue number11
DOIs
Publication statusPublished - Jun 2010

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Butanols
Toluene
Surface-Active Agents
Hydroxyl Radical
toluene
Oils
oils
surfactants
Microemulsions
Scattering
microstructure
Microstructure
Water
scattering
water
Physical chemistry
physical chemistry
versatility
Nitrates
Phase diagrams

Cite this

Paul, A ; Fallis, I ; Cooper, C ; Wess, Timothy ; Thomas, K ; Heenan, R ; King, S ; Griffiths, P. / A contrast variation small-angle scattering study of the microstructure of 2,5-dimethyl -7- hydroxyl -2, 5-diazaheptadecane-toluene-butanol oil-in-water metallomicroemulsions. In: Soft Matter. 2010 ; Vol. 6, No. 11. pp. 2552-2557.
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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.",
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A contrast variation small-angle scattering study of the microstructure of 2,5-dimethyl -7- hydroxyl -2, 5-diazaheptadecane-toluene-butanol oil-in-water metallomicroemulsions. / Paul, A; Fallis, I ; Cooper, C; Wess, Timothy; Thomas, K; Heenan, R; King, S; Griffiths, P.

In: Soft Matter, Vol. 6, No. 11, 06.2010, p. 2552-2557.

Research output: Contribution to journalArticle

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AU - Paul, A

AU - Fallis, I

AU - Cooper, C

AU - Wess, Timothy

AU - Thomas, K

AU - Heenan, R

AU - King, S

AU - Griffiths, P

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N2 - 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.

AB - 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.

KW - Open access version available

KW - Aqueous phase

KW - Contrast variation

KW - Metallosurfactants

KW - Nitrate complexes

KW - Oil-in-water

KW - Oil-in-water microemulsions

KW - Pulsed gradient spin echos

KW - Scattering analysis

KW - Small-angle scattering

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DO - 10.1039/b926812j

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SP - 2552

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JF - Soft Matter

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