Utilization Of Micelles Research Articles

Exploitation and utilization of template micelles: Novel absorbent–releaser of NO derived from as-synthesized mesoporous silica

Novel NO absorbent–releaser is discovered by utilizing the as-synthesized mesoporous silica MCM-41 or MCM-48, not only saving the energy and time for removal of template, but also establishing the way to utilize the micelles for new applications of health care. The micelles of cetyltrimethylammonium bromide (CTAB) in the as-synthesized MCM-48 or MCM-41 have a configuration of spoke-like in the wheel or net-like inside the channel, intercepting and capturing the NO in gas flow with an unwonted high absorption capacity. Once NO is absorbed on these composites, it forms surface nitrous species and nitrates that are stable in atmosphere, achieving the storage of NO in ambient environment. Finally, the NO can be acid-triggered released in the solution with the pH value same as that of the gastric juice, providing a new low-cost candidate for delivering exogenous NO. Various factors, including surfactant types, framework structures, and absorption temperatures, are investigated to expatiate this new controllable absorption–release process, exploiting further the utilization of micelles and affording a new application of as-synthesized mesoporous material in the drug delivery system.

Elucidation of the mechanism of an aromatic substitution reaction by the utilization of micelles as mechanistic probes

A mechanistic study has been performed in order to elucidate the mechanism of the iodination of aniline and the iodination species in this reaction. For this purpose, the reaction has been performed in the presence of cationic and anionic surfactants in order to utilize from micellar charge effect. The results of this study provided evidence to support the hyphothesis that the iodination reagent in this reaction is hypoiodous acid.

Micelles in Analytical Chemistry

Abstract Molecules which possess both hydrophilic and hydrophobic structures may associate in aqueous media to form dynamic aggregates commonly called micelles. Interest in these aggregates commonly called micelles. Interest in these aggregates has grown over the years from the original work of Hartley,1 which describes what is still accepted as a functional model of the geometry of micelles. Fortunately, our understanding of the geometry as well as other features of micelles has increased markedly over the intervening years as evidence by the abundance of reviews concerning micelles just since 1980 (over 350 reviews as searched via online CAS). While mose of these papers deal with micelle structure, catalysis, or dynamics, this report continues a tradition of reviews concerning the utility of micelles in analytical chemistry.