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The properties of novel bolaamphiphiles that carry epimers of vitamin C (L-ascorbic acid and/or D-isoascorbic acid) as hydrophilic head groups, and an interconnecting aliphatic C(12) chain (DD, DL, and LL) were investigated by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), small-angle X-ray scattering (SAXS), X-ray diffraction(More)
The solubility of some potassium salts (KF, KCl, KBr, KI, KNO(3), KClO(4), KSCN, and KSeCN) in ethylene carbonate (EC) was determined at different temperatures with an inductively coupled plasma atomic emission spectrometer. From the solubility measurements, the thermodynamic parameters ΔG, ΔH, and ΔS, of solution and of solvation, were calculated.(More)
An aqueous dispersion of lysozyme and sodium dodecyl sulfate phase separates below the cloud point. Two liquid phases are formed. At pH < pI electrolytes change the cloud point temperatures (T(c)). These follow an inverse Hofmeister series. Anions partition asymmetrically between the two phases. At fixed cation, the partitioning depends on the specific(More)
The occurrence of Hofmeister (specific ion) effects in various membrane-related physiological processes is well documented. For example the effect of anions on the transport activity of the ion pump Na(+), K(+)-ATPase has been investigated. Here we report on specific anion effects on the ATP-dependent Ca(2+) translocation by the sarcoplasmic reticulum(More)
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