A data set of 181 diverse anionic surfactants has been investigated to relate the logarithm of critical micelle concentration (cmc) to the molecular structure using Comprehensive Descriptors for Structural and Statistical Analysis (CODESSA Pro) software. A fragment approach provided superior quantitative structure-property relationship (QSPR) models in terms of statistical characteristics and p...

Experimental measurements of the Critical Micelle Concentration (CMC) in diblock copolymer and molecular surfactant systems have shown a cross-over from the exponential decrease at short chain lengths to a much more shallow decay of the CMC when the solvophobic block length was increased. This effect was observed for a wide variety of surfactants, and has been attributed to the collapse of the ...

Aquantitative structure-property relationship studywasperformedon the criticalmicelle concentration (cmc) of nonionic surfactants using the CODESSA program. A known correlation between the logarithm of the cmc and counts of linear alkane carbon atoms and ethoxy groups in linear alkyl ethoxylates was improved (R2 ) 0.996) by adding cross terms of these molecular descriptors. A general three-para...

Solubilized proteins Detergent-solubilization of membrane proteins has proved to be a successful approach in many cases. Both ionic and nonionic detergents have been used: the choice of detergent may be crucial for retaining protein activity. Generally, detergents should be used at concentrations above their critical micelle concentration (CMC). Micelles formed above the CMC mimic a membrane en...

240 words Introduction: 421 words Results and Discussion: 1795 words Abbreviations: CMC, critical micelle concentration; HLM, human liver microsomes; HPLC, high performance liquid chromatography; NSB, non-specific binding; RED, rapid equilibrium dialysis; TKI, tyrosine kinase inhibitor This article has not been copyedited and formatted. The final version may differ from this version. DMD Fast F...

Mesoporous polymer materials were fabricated from micelle/polymer precursors prepared by the micelle template method in reverse microemulsion systems and the pore size could be tuned by varying the type and concentration of surfactant.

Micellization of surfactant solutions is a ubiquitous phenomenon in natural systems and technological processes, and its theoretical description represents one of the cornerstone problems in the physical chemistry of colloidal systems. However, successful attempts of quantitative modeling confirmed by experimental data remains limited. We show, for the first time, that the dissipative particle ...

A model for the limiting surface tension of surfactant solutions (surface tension at and above the critical micelle concentration, cmc) was developed. This model takes advantage of the equilibrium between the surfactant molecules on the liquid/vacuum surface and in micelles in the bulk at the cmc. An approximate analytical equation for the surface tension at the cmc was obtained. The derived eq...

The membrane/water partition coefficients, K, of 15 electrically neutral (non-charged or zwitterionic) detergents were measured with phospholipid vesicles by using isothermal titration calorimetry, and were compared to the corresponding critical micellar concentrations, cmc. The detergents measured were oligo(ethylene oxide) alkyl ethers (C(m)EO(n) with m = 10/n = 3, 7 and m = 12/n = 3.8); alky...

Figure 3 shows a HREM image of a silica ge112 specimen. The corresponding optical transform (inset Figure 3) indicates that the Scherzer defocus condition is well-satisfied, with spacings in the range 2.4-6.3 A appearing in the image. In this case there is no evidence for departures from randomness, either in the image or its optical transform, and it might be argued that this is consistent wit...