Solubilization of hydrophobic molecules in nanoparticles formed by polymer–surfactant interactions

Polymer–surfactant interactions: Binding mechanism of sodium dodecyl sulfate to poly(diallyldimethylammonium chloride)

“…A significant contribution to the entropy-driven binding may be also attributed to the recovery of translational entropy of released counter-ions [62,64]. The other factors contributing to the positive entropy may be folding of the polymeric chain into a random coil configuration due to screening of the electrostatic forces between the segments [69,70] and formation of nanoparticle composed SDS/PDAC aggregates [23,71].…”

3,3′-Dioctadecyloxacarbocyanine perchlorate (DiO) as a fluorogenic probe for measurement of critical micelle concentration

“…However, as the surfactant concentration increases above the CMC, the molecules assemble to form micelles. 20,21 In these cases, the authors hypothesize that this anomalous behavior may be the result of dye aggregation. 7 CMC values have been measured using a variety of methods including tensiometry, 8 conductivity, 9 dynamic light scattering (DLS), 10 fluorescence polarization, 11 and capillary electrophoresis.…”

Investigation of binary polymer/surfactant or ternary polymer/surfactant/Cu2+ complexes in aqueous solution through Nile red probing

“…Moreover, while the quantum yield of Nile red in a purely aqueous microenvironment is reported to be very low,10 it presents a strong emission when it is solubilized in a lower polarity environment. Because of these properties, Nile red is widely used as a staining agent in biology,15 in the investigation of disperse systems, like microemulsions16, 17 or other polymeric colloids,18, 19 as well as a guest for studying host–guest systems 20–22. While Nile red has been used for the characterization of surfactants23–28 and polymer/surfactant interactions,18 it has not been systematically exploited for the determination of CAC or CMC 18, 26…”