Lyotropic liquid-crystalline mesophases of [Zn(H2O)6](NO3)2-C12EO10-CTAB-H2O and [Zn(H2O)6](NO3)2-C12EO10-SDS-H2O systems
Author
Albayrak, C.
Soylu, A. M.
Dag, Ö.
Date
2008Source Title
Langmuir
Print ISSN
0743-7463
Volume
24
Issue
19
Pages
10592 - 10595
Language
English
Type
ArticleItem Usage Stats
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Abstract
The mixture of two surfactants (C12EO10-CTAB and C 12EO10-SDS) forms lyotropic liquid-crystalline (LLC) mesophases with [Zn(H2O)6](NO3)2 in the presence of a minimum concentration of 1.75 H2O per C 12EO10. The metal ion/C12EO10 mole ratio can be increased up to 8.0, which is a record high metal ion density in an LLC mesophase. The metal ion concentration can be increased in the medium by increasing the CTAB/C12EO10 or SDS/C12EO 10 mole ratio at the expense of the stability of the LLC mesophase. The structure and some thermal properties of the new mesophase have been investigated using XRD, POM, FTIR, and Raman techniques. © 2008 American Chemical Society.
Keywords
Concentration (process)Crystalline materials
Diffusers (optical)
Fourier transform infrared spectroscopy
Metal ions
Surface active agents
Thermodynamic properties
Zinc
Ion densities
Lyotropic
Mesophases
Metal ion concentrations
Mole ratios
Raman techniques
Thermal properties
Ions