Solution behavior of mixed systems based on novel amphiphilic cyclophanes and Triton X100: Aggregation, cloud point phenomenon and cloud point extraction of lanthanide ions

Novel membrane mimetic systems based on amphiphilic oxyethylated calix[4]arene: Aggregative and liquid crystalline behavior

“…ACOs were synthesized according to the published procedure [11]. La(NO 3 ) 3 ·6H 2 O (99% grade) was purchased from Aldrich.…”

“…In particular, lyotropic mesophases find application in heterogeneous catalysis, biology, pharmacy, optical-communication systems, and organic and molecular electronics [10]. Some aspects of colloid behavior and cloud point extraction of Ln(III) ions in the mixed ACO-Triton-X-100 systems was discussed in our recent work [11]. It was shown that there are deviations in their behavior from those of typical surfactants.…”

Synthesis and aggregation properties of new biodegradable amphiphilic derivatives of p-tert-butylphenol for green separation of Gd(III) ions

“…These regularities are of great impact in a development of new ecofriendly extraction techniques for f-ions. Thus the present work is a continuation of our previous studies of the CPE of lanthanide ions by means of nonionic surfactants and triblock copolymers [20][21][22].…”

QSPR modeling of nonionic surfactant cloud points: An update

“…This instant separation is a peculiar characteristic of a nonionic surfactant, which differentiates it from an ionic surfactant. It also enables NSs to be applied extensively in many industrial processes, e.g., solubilizers in preparing O/W emulsions [2], emulsifiers in the pharmaceutical field [3], detergents, and especially extracting agents in the cloud-point extraction (CPE) of organic compounds [4], proteins [5], and metal ions [6]. In the above applications or studies, CP temperature is a key parameter.…”

“…In addition, the binding ability of the polyoxyethylene chains of C m E n -TX100 aggregates toward lanthanide ions correlates with the CP temperature. Both CPE efficiency and CP temperature exhibit an unusual dependence on the structure of alkyl upper rim substituents of surfactants and the lengthening of the polyoxyethylene chains results in an increase of the extraction extent [6]. Therefore, the CP is an important property for selecting NSs in the formulation of such disperse systems.…”