Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
In this paper we used a surfactant-stabilized lyotropic lamellar model system to study the interfacial behavior of an ion-extracting agent: N(1),N(3) dimethyl-N(1),N(3)-dibutyl-2-tetradecylmalonamide (DMDBTDMA). An analysis of small-angle X-ray scattering (SAXS) and polarized attenuated total reflectance-Fourier transform infrared (ATR-FTIR) data enabled us to describe the distribution of the malonamide extractant within the bilayers and its complexation state at the equilibrium. The lamellar phase was diluted with salt water containing varying amounts of complexing salt, and each structural state measured was described using a thermodynamic model based on three elementary equilibria: (i) partition of the extractant polar heads between the core and the polar shell of the bilayers, (ii) the complexation of ions by extractants at the bilayers surfaces, and (iii) the partition of bonded extractants between the core and interfaces of bilayers. This model enabled us to compare the energy cost of each step.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/jp108585f | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The Modulatory Role of Positional Isomerism in Diolein on the Structural Features of pH-Responsive 2-Hydroxyoleic Acid Nanocarriers.
J Am Chem Soc
August 2025
Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark.
pH-responsive nonlamellar liquid crystalline nano-self-assemblies are gaining substantial interest in drug delivery applications owing to their unique inherent structural architectures. Using two positional isomers of diolein (namely, 1,2-diolein and 1,3-diolein) and their mixture (designated as diolein) in combination with 2-hydroxyoleic acid (2OHOA, a therapeutic agent with anticancer activity), we report on a family of stabilizer-free and pH-responsive nanoparticles with internal architectures spanning from a lamellar (L) phase to inverse hexagonal (H) and discontinuous (micellar) cubic phases. In lipid composition- and pH-dependent manners, the triggered colloidal transformations in these aqueous nanodispersions, combined with alterations in the morphological features and size distributions, were investigated by small-angle X-ray scattering, cryo-transmission electron microscopy, and nanoparticle tracking analysis.
View Article and Find Full Text PDFDynamic Mosaicity Modulates Ion Transport in Stimuli-Responsive Liquid Crystal Electrolytes.
Adv Sci (Weinh)
August 2025
Univ. Grenoble Alpes, CNRS, CEA, Grenoble-INP, IRIG, SyMMES, Grenoble, 38000, France.
Structural mosaicity and defects are ubiquitous across materials and critically influence functional properties, from semiconductors to biological membranes. In soft matter electrolytes, these features remain difficult to probe and exploit due to complex synthesis and limited long-range structural order. A dimensionally tunable model system based on thermotropic ionic liquid crystals (TILCs) is introduced to investigate the interplay between structural mosaicity and ion transport.
View Article and Find Full Text PDFThis study focuses on the kinetics of light-induced mesophase transitions in lyotropic liquid crystals containing a mixture of phospho-lipids and azo-benzene amphiphiles. Lipid membranes organize in a wide range of morphologies, directly influencing their functionality and the efficiency of associated components such as proteins. Transitions between mesophases occur naturally during membrane fusion and can also be triggered by multiple factors, such as pH, salinity, temperature and light.
View Article and Find Full Text PDFViscoelastic Properties of Micellar Lyotropic Nematic Liquid Crystals: Exploring the Impact of Temperature and Surfactant Concentration.
Langmuir
August 2025
Institute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
The bulk elastic behavior of a nematic liquid crystal (LC) is commonly described by three elastic constants, involving splay (), twist (), and bend () director deformations. While the elastic properties of thermotropic nematic LCs are well-understood, knowledge of the elasticity of lyotropic liquid crystals (LLCs) is still quite limited. In particular, for micellar systems, which represent the largest and most ubiquitous class of LLCs, no systematic measurements of all three elastic constants have been reported so far.
View Article and Find Full Text PDFExploring the Self-Assembly of Glycolipids into Three-Dimensional Network Phases.
J Phys Chem B
August 2025
Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455-0431, United States.
Glycolipids are sugar-based amphiphiles that play crucial roles in many biological processes. Under thermotropic and lyotropic conditions, glycolipids self-assemble into a variety of mesophases, including cocontinuous network phases, such as the double gyroid. In this work, a two-stage molecular dynamics simulation workflow is developed to probe network formation for solvent-free amphiphiles at different temperatures.
View Article and Find Full Text PDF