Sorption isotherms and swelling of POPC in H2O and 2H2O

Thermodynamic and structural behaviour of equimolar POPC/CnE4 (n=8, 12, 16) mixtures by sorption gravimetry, 2H NMR spectroscopy and X-ray diffraction

“…The samples were directly hydrated by 2 H 2 O vapour because the same samples were subsequently used for the 2 H NMR measurements. From a previous study it is known that the sorption behaviour for pure POPC is nearly identical for the sotopes H 2 O and 2 H 2 O (Klose et al, 1992), and the probability is high that this holds approximately for the respective POPC mixtures.…”

Hydration and Lyotropic Melting of Amphiphilic Molecules: A Thermodynamic Study Using Humidity Titration Calorimetry

“…Note that this detail of the adsorption isotherm has not been detected in a previous study on water adsorption onto POPC where RH has been adjusted using saturated salt solutions (26). The RHdependence of the integrated pulses, q ITC , resembles closely that of RЈ W/L as in the case of DTAB (cf.…”

Fourier transform infrared spectroscopy as a probe for the study of the hydration of lipid self‐assemblies. I. Methodology and general phenomena

“…This estimation based on the data volved in the process of water binding. The significant difference between DOPC and DPPC may from different gravimetric studies 26,27,29 yields the water-per-lipid stoichiometry or hydration numbe understood as follows. The cis configuration of the C|C double bond of the acyl chains in DOPC ber, n w , on a basis that A wr unity corresponds to about 3.0 ({0.3) water molecules per lipid.…”

“…Thus, hydrophobic regions are generally arranged in the ''central core'' of such biomolecules ized by procedure (2) has been used, on the other hand, mainly in gravimetric experiments. [26][27][28][29] so as not to be exposed to water. In this way, water plays a crucial role in the structural organization Another valuable tool in lipid research is vibrational spectroscopy with its complementary techof proteins (folding) [2][3][4] as well as nucleic acids (especially for the polymorphism of DNA) [5][6][7] and niques IR and Raman spectroscopy; this is evidenced by the appearance of several reviews and carbohydrates.…”