A short account of the developments and perspectives IKR (iso-kinetic relation) EEC (enthalpy (H) – entropy (S) compensation) has been presented. The are known to be extra thermodynamic or empirical correlations though linear H–S correlation can thermodynamically deduced. Attempt also made explain phenomena in terms statistical thermodynamics. In this study, we have briefly revisited fundamentals both from kinetic grounds. detailed revisit phenomenon on varied equilibrium processes Possible...

Individual amphiphiles, polymers, and colloidal dispersions influenced by temperature, pH, environmental conditions or interactions between their oppositely charged pairs in solvent medium often produce solvent-rich solvent-poor phases the system. The denser phase found either on top bottom of system is called coacervate. Coacervates have immense applications various technological fields. This review comprises a concise introduction, focusing types coacervates, influence different factors...

Mixed aquo-organic solvents are used in chemical, industrial, and pharmaceutical processes along with amphiphilic materials. Their fundamental studies reference to bulk interfacial phenomena thus considered be important, but such detailed limited. In this work, the adsorption of sodium dodecylsulfate (SDS, C12H25SO4(-)Na(+)) dioxane-water (Dn-W) methanol-water (Ml-W) media extensive mixing ratios its behavior have been investigated. The solvent-composition-dependent properties identified,...

The "enthalpy-entropy compensation" (EEC) effect has been a long-standing fascinating yet unresolved phenomenon in chemical thermodynamics. reasons for the observation of EEC are not clear. Various views such as empirical, extrathermodynamic, error-related, solvation, and so forth H/S linear correlation floating. Statistical hidden Carnot's cycle (involving microscopic "heating cooling" machines) have also proposed recently EEC. In this work, we attempted different line approach to...

Self-aggregation of MEGA-9 (N-nonanoyl-N-methyl-d-glucamine), a nonionic sugar-based surfactant, was studied with respect to the effect salt (NaCl) and ionic liquid (1-butyl-3-methylimidazolium tetrafluoroborate) on its critical micelle concentration (cmc), aggregation number, hydrodynamic dimensions, energetics micellization, micellar microenvironment. Fluorimetry (both steady state time resolved) used understand microenvironments under influence additives. NaCl found decrease cmc, increase...

The influence of the water soluble non-ionic tri-block copolymer L31 on microstructure and self-aggregation dynamics anionic surfactant sodium dodecylsulfate (SDS) in aqueous solution was investigated.

Sodium dicarboxylates (or Bola salts) with methylene spacers 0, 2, 4, 6, 8, and 10 were studied in aqueous solution to investigate their influence on the micellization of cetyltrimethylammonium bromide (CTAB). Since bolas spacer length ≤12 are known not micellize general, herein used sodium treated as 2:1 amphiphilic electrolytes which reduced surface tension water (except oxalate zero spacer) without self-association. Their concentration dependent conductance was also linear breaks. The...

Cholesterol aided micelle to vesicle transition of cationic gemini surfactant (14-4-14) in solution has been investigated.

We report a multifunctional nanotherapeutic platform based on liposomes loaded with drug and iron oxide nanoparticles (IONs) coated gold nanoshell synthesized using polyelectrolyte (layersome) soft templating technique. IONs nanoshells were used to provide combined hyperthermia triggered release via radio frequency (RF) or near-infrared (NIR) stimulation. the anticancer doxorubicin (DOX) coencapsulated inside composed of zwitterionic phosphatidylcholine, anionic phosphatidylglycerol,...

In this contribution, we have examined a composition dependent self aggregated structural modification of catanionic mixture the surface active ionic liquid (IL) 1-butyl-3-methylimidazolium octyl sulphate and cationic gemini surfactant (14-5-14) in aqueous medium.

Physicochemical studies on aqueous mixtures of ionic liquids (ILs) and reverse pluronics are limited. Self-aggregation dynamics microstructure a surface-active IL (SAIL), 1-butyl-3-methylimidazolium octylsulfate [C4mim] [C8OSO3], in the presence pluronic, PO8EO22PO8 (known as 10R5), were studied using isothermal titration calorimetry (ITC), high-resolution nuclear magnetic resonance (NMR), small-angle neutron scattering (SANS) methods. Also, cryo-/freeze-fracture transmission electron...

The behavior of SDS with increasing vol% Tf and Fa in water at 303 K.

Subtle changes in the microstructure and dynamics of triblock copolymer L121, (ethylene oxide)5 (propylene oxide)68 oxide)5i.e., E5P68E5, sodium dodecylsulfate (SDS) system aqueous medium were investigated using high-resolution nuclear magnetic resonance (NMR), electron paramagnetic (EPR) small-angle neutron scattering (SANS) methods. NMR self-diffusion measurements helped us to understand nature binding SDS with formation their mixed aggregates. These results showed that even at low [SDS]...

Micro and nanoplastics pose a growing environmental threat with complex implications for human health.

The influence of pH on the human serum albumin (HSA) interaction with ionic liquid (IL)1-butyl 3-methylimidazolium octyl sulfate ([BMIM][OSU]) at its sub-micellar concentration 5 mM (well below CMC ∼31 25 °C) in aqueous solution has been monitored employing different methods, viz., circular dichroism (CD), fluorescence, electrokinetic determination zeta potential (ZP), nuclear magnetic resonance (NMR), small-angle neutron scattering (SANS), and molecular docking (MD). CD analysis indicated a...

The gist of the morphological changes self-assemblies in solution by way SDS–L61 interaction primarily based on findings from SANS and FFTEM measurements supplemented with other methods.

Core/shell gold “raspberry” nanostructures capable of multiple therapeutic functionalities were synthesized using a template composed monodispersed anionic protein (bovine serum albumin) nanoparticles coated with cationic biopolymer (poly-l-lysine). The exhibited high photothermal conversion efficiency when exposed to near-infrared (NIR) laser, which led significant cellular inhibition A549 human lung cancer cells due intracellular hyperthermia. raspberry structures also provided hot spots...

Abstract Cationic surfactant cetyltrimethylammonium bromide (CTAB) and cetylpyridinium (CPB) bind to the calf thymus DNA (ct‐DNA) like anionic biopolymers electrostatically, establish equilibrium in aqueous medium at pH 7. At low concentration, ct‐DNA does not interact with surfactants, sodium dodecylsulfate (SDS) dodecylbenzylsulfonate (SDBS). However, ground state, is found clearly ct‐DNA‐bound cationic whereby same surfactant–DNA isosbestic point reappears. We herein report a detail...

The cavity in a porphyrin can accommodate metal ions through electron donor-acceptor (EDA) interaction acetonitrile media without any specially designed fabrication with the subunit. Alkali ion forms complex meso-tetraphenylporphyrin (TP) 2:1 stoichiometry, while bivalent Mg(2+) follows 1:1 stoichiometry. A fluorescence study indicated that TP behave like chemosensor for these present blood electrolytes. Specifically, alkali intensity-based sensing was observed, due to inhibition of...

Abstract In addition to enthalpy–entropy compensation (EEC), anti-enthalpy–entropy (AEEC) phenomenon is also found in literature. The reports on the latter are limited, and analyses justifications so far unclear. Herein we present demonstration nature possibility of AEEC phenomenon. Although literature have mostly shown linear AEEC, both non-linear dependences. non-linearity consider arises from large “free energy window” (FEW) like EEC, recently presented discussed. Attempts been made...