Shahed Rana

Influence of electrolytes/urea on the interaction of tetradecyltrimethylammonium bromide and antibiotic levofloxacin hemihydrate drug

ABSTRACT A study of the interaction of tetradecyltrimethylammonium bromide (TTAB) and levofloxacin hemihydrate (LFH) mixtures has been studied by conductivity measurement method in aqueous medium and in the presence of inorganic electrolyte (KNO3 and K2SO4)/urea at various temperatures (298.15−318.15 K) with typical gap of 5 K. For pure TTAB along with drug–TTAB mixture in aqueous as well as in salts/urea solution, a single critical micelle concentration (CMC) was noticed. The CMC values for LFH-TTAB mixtures in the presence of salts exhibited lower in magnitude as compared to aqueous solution. The ΔGm values were found to be negative in the entire cases signifying the spontaneous formation of micelles. Both ΔHm and ΔSm indicated that hydrophobic as well as electrostatic interactions were enhanced in the presence of electrolytes compared to an aqueous solution. Other thermodynamics variables such as transfer enthalpy (ΔHm.tr), transfer energy (ΔGm.tr), and transfer entropy (ΔS°m.tr) were evaluated and explained thoroughly.

Experimental and theoretical investigation of micellization behavior of sodium dodecyl sulfate with cetyltrimethylammonium bromide in aqueous/urea solution at various temperatures

AbstractMixed micelle formation behavior of cationic surfactant-cetyltrimethylammonium bromide (CTAB) and anionic surfactant sodium dodecyl sulfate (SDS) in aqueous as well as in urea medium from 303.15 K to 323.15 K at 5 K interval was carried out by conductometric method. The differences between the experimental values of critical micelle concentrations (cmc) and ideal critical micelle concentrations (cmcid) illustrate the interaction between the amphiphiles studied. The values of micellar mole fraction (

Interaction of cetyltrimethylammonium bromide with drug in aqueous/electrolyte solution: A combined conductometric and molecular dynamics method study

\text{X}_1^{Rub}

Influence of salt and temperature on the interaction of bovine serum albumin with cetylpyridinium chloride: Insights from experimental and molecular dynamics simulation

X1Rub (Rubingh),

Hydrogenase biomimetics: structural and spectroscopic studies on diphosphine-substituted derivatives of Fe2(CO)6(µ-edt) (edt = ethanedithiolate) and Fe2(CO)6(µ-tdt) (tdt = 1,3-toluenedithiolate)

\text{X}_1^{M}

Aggregation Behavior of Sodium Dodecyl Sulfate and Cetyltrimethylammonium Bromide Mixtures in Aqueous/Chitosan Solution at Various Temperatures: An Experimental and Theoretical Approach

X1M (Motomura),