On April 12, 2022, Singh, Himanshu; Sharma, Sumit published an article.Recommanded Product: 1-Decanethiol The title of the article was Determination of Equilibrium Adsorbed Morphologies of Surfactants at Metal-Water Interfaces Using a Modified Umbrella Sampling-Based Methodology. And the article contained the following:
Surfactants adsorb to metal-water interfaces in various morphologies, including self-assembled monolayers (SAMs), cylindrical and spherical micelles or hemimicelles. Current mol. simulation methods are unable to efficiently sample the formation of these morphologies because of the large diffusive/energetic barriers. We introduce a modified umbrella sampling-based methodol. that allows sampling of these morphologies from any initial configuration and provides free energy differences between them. Using this methodol., we have studied adsorption behavior of cationic [quaternary ammonium (quat) of 4 and 12 carbon long alkyl tails], uncharged [decanethiol], and anionic [phosphate monoester] surfactants and their mixtures at a gold-water interface. We find that while Coulombic repulsion between the charged head groups of quat-4 limits their adsorption to a sparse layer, stronger hydrophobic interactions between the alkyl tails of quat-12 promote adsorption resulting in a morphol. with adsorbed hemispherical micelles sitting atop a monolayer. Decanethiol mols. adsorb in a densely packed bilayer with the mols. standing-up on the surface in the first layer and lying parallel to the surface in the second layer. Cationic and anionic surfactant mixtures display a synergistic adsorption behavior. These results elucidate the role of mol. characteristics in dictating the nature of adsorbed morphologies of surfactants at metal-water interfaces. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).Recommanded Product: 1-Decanethiol
The Article related to surfactant adsorption liquid solid interface, Surface Chemistry and Colloids: Solid-Liquid Systems and other aspects.Recommanded Product: 1-Decanethiol
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