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Mixing oil and water by a DNA-based surfactant

Bilalov, Azat LU ; Leal, Cecilia LU and Lindman, Björn LU (2004) In The Journal of Physical Chemistry Part B 108(39). p.15408-15414
Abstract
The self-assembly behavior of a cationic surfactant (dodecyltrimethylammonium) with DNA as counterion in mixtures of water and decanol was investigated. The phase diagram was established and the different regions of the phase diagram characterized with respect to microstructure by H-2 NMR (D2O), small-angle X-ray scattering (SAXS), and other techniques. The DNA-cationic surfactant aggregate is virtually insoluble in water but shows a high solubility in decanol; in decanol, highly viscous solutions/rubberlike solid material is found. In the presence of both solvents, there is a formation of liquid crystalline phases. Both lamellar and reversed hexagonal phases are found, the former favored by higher water contents, the latter by higher... (More)
The self-assembly behavior of a cationic surfactant (dodecyltrimethylammonium) with DNA as counterion in mixtures of water and decanol was investigated. The phase diagram was established and the different regions of the phase diagram characterized with respect to microstructure by H-2 NMR (D2O), small-angle X-ray scattering (SAXS), and other techniques. The DNA-cationic surfactant aggregate is virtually insoluble in water but shows a high solubility in decanol; in decanol, highly viscous solutions/rubberlike solid material is found. In the presence of both solvents, there is a formation of liquid crystalline phases. Both lamellar and reversed hexagonal phases are found, the former favored by higher water contents, the latter by higher concentrations of decanol. The liquid crystalline phases are in equilibrium, via two-phase and three-phase regions, with the essentially pure components. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
The Journal of Physical Chemistry Part B
volume
108
issue
39
pages
15408 - 15414
publisher
The American Chemical Society
external identifiers
  • wos:000224070200085
  • scopus:6344244585
ISSN
1520-5207
DOI
10.1021/jp048219d
language
English
LU publication?
yes
id
f1e8cd2b-f2a3-4ef2-919f-5b07b79bc853 (old id 154001)
date added to LUP
2007-07-10 17:17:36
date last changed
2017-03-26 04:20:43
@article{f1e8cd2b-f2a3-4ef2-919f-5b07b79bc853,
  abstract     = {The self-assembly behavior of a cationic surfactant (dodecyltrimethylammonium) with DNA as counterion in mixtures of water and decanol was investigated. The phase diagram was established and the different regions of the phase diagram characterized with respect to microstructure by H-2 NMR (D2O), small-angle X-ray scattering (SAXS), and other techniques. The DNA-cationic surfactant aggregate is virtually insoluble in water but shows a high solubility in decanol; in decanol, highly viscous solutions/rubberlike solid material is found. In the presence of both solvents, there is a formation of liquid crystalline phases. Both lamellar and reversed hexagonal phases are found, the former favored by higher water contents, the latter by higher concentrations of decanol. The liquid crystalline phases are in equilibrium, via two-phase and three-phase regions, with the essentially pure components.},
  author       = {Bilalov, Azat and Leal, Cecilia and Lindman, Björn},
  issn         = {1520-5207},
  language     = {eng},
  number       = {39},
  pages        = {15408--15414},
  publisher    = {The American Chemical Society},
  series       = {The Journal of Physical Chemistry Part B},
  title        = {Mixing oil and water by a DNA-based surfactant},
  url          = {http://dx.doi.org/10.1021/jp048219d},
  volume       = {108},
  year         = {2004},
}