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Article
The Effect of Shape and Concentration on Translational Diffusion of Proteins Measured by PFG NMR
The concentration dependences of self-diffusion coefficient for irregular-shaped fibrinogen, for globular, spheroidal trypsin and α-chymotrypsin were studied by pulsed field gradient nuclear magnetic resonance...
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Article
Structure and properties of aqueous dispersions of sodium dodecyl sulfate with carbon nanotubes
The dispersing action of the surfactant (sodium dodecyl sulfate, SDS) on the carbon nanotubes (CNT) in aqueous medium has been studied. Electron microscopy, molecular docking, NMR and IR spectroscopies were ap...
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Article
The structure and activity of fungal lipases in bile-salt solutions
The changes in the structure and catalytic properties of fungal lipases (Candida rugosa, Rhizomucor miehei, Mucor javanicus) were investigated in micellar solutions of bile salts that differ in their hydrophilic–...
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Article
Structure and dynamics of concentrated micellar solutions of sodium dodecyl sulfate
In micellar solutions of sodium dodecyl sulfate, as the concentration of surfactants increases, the spheroid shape of the micelles changes from almost spherical to ellipsoidal with increasing ratio of half-axe...
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Article
Association of sodium dodecyl sulfate in aqueous solutions according to chemical shifts in 1H NMR spectra
Proton chemical shifts of different atomic groups in sodium dodecyl sulfate (SDS) have been studied by 1H NMR spectroscopy as functions of surfactant concentration in aqueous solutions. Three surfactant concentra...
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Article
Micellar catalytic effect as a factor of lipase activity regulation
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Article
Micellization in sodium deoxycholate solutions
NMR self-diffusion, tensiometry, and measurement of solubilization capacity are employed to comparatively study micellization in aqueous solutions of a facial amphiphilic compound, sodium deoxycholate (NaDC), ...
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Article
Mixed micellar systems of geminal alkylammonium surfactants and long-chain amines
Numerical characteristics of the aggregation behavior of geminal alkylammonium surfactants in aqueous solutions (the size of micelles, the packing of surfactant molecules, the surface potential, the extent of ...
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Article
Effect of the charge of the interface surface on the structure and activity of trypsin in reversed mycelles
The effect of the sign and value of the charge of the interface surface on the catalytic activity of trypsin in systems of reversed mycelles was investigated. n-Butanol was used for the modification of the phase ...
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Article
Sodium dodecyl sulfate self-diffusion in premicellar and low-concentrated micellar solutions in the presence of a background electrolyte
The Fourier transform pulsed field gradient NMR method is employed to investigate the self-diffusion of surface active sodium dodecyl sulfate ions in premicellar and low-concentrated micellar solutions at diff...
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Article
Catalytic properties of microheterogeneous systems based on cationic surfactants in transesterification processes
The kinetic parameters of the transesterification processes of carboxylic acid esters under the action of alkylphenolates in aqueous micellar solutions of cetyltrimethylammonium bromide (CTAB) are found. The o...
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Article
Structural properties of microheterogeneous surfactant-based catalytic systems: Multicomponent self-diffusion NMR approach
The possibilities of the Fourier transform pulsed-gradient spin-echo1H nuclear magnetic resonance approach in the structural study of surfactant-based microheterogeneous liquid systems are examined by the example...
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Article
Influence of the Structure of Cetyltrimethylammonium Bromide Based Microemulsions on Base Hydrolysis of Carboxylic Acid Esters
The structure of water/cetyltrimethylammonium bromide/n-butanol/hexane microemulsions was studied by conductometry, viscometry, and Fourier transform 1H NMR spectroscopy with pulse magnetic field gradient. The re...
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Article
Effects of solubilized dodecylamine on the microstructure of cetylpyridinium bromide-n-butanol-hexane-water system studied by pulsed-gradient spin echo NMR and ESR spin label methods
The effect of solubilized dodecylamine (DDA) on the structure of the cetylpyridinium bromide-n-butanol-hexane-water microemulsions has been studied by the Fourier-transform pulsed-gradient spin-echo1H nuclear mag...
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Article
Structure and Properties of Water-Oil Microemulsions
The parameters determining the structure and properties (surface potential and size of microdrops) of oil-water microemulsions containing various surfactants, and also the distribution of components between th...
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Chapter
Alternation in the Structure of Water-in-Oil Microemulsions by the Action of Poly(Ethylene Glycol)
One of the ways of changing the properties of water media in lipid systems is the replacement of a part of water by some lipid with a different polarity. For this purpose water-soluble poly(ethylene glycol) (P...
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Chapter
Structural Factors in Micellar Catalysis: NMR Self-Diffusion Study
The use of surfactants is one of the most important ways affecting reactivity of organic compounds. The micellar effect in reaction kinetics is mainly due to increase in concentration of reagents in the micell...
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Article
Cetylpyridinium bromide-based oil-in-water microemulsions as a medium for hydrolysis of esters of phosphorus acids in the presence of primary amines
High-resolution 1H NMR technique with Fourier-transform and pulsed-gradient spin-echo was used to study the structure of oil-in-water microemulsions based on cetylpyridinium bromide. The sizes of microdrops and t...
