✦ LIBER ✦

Aggregate size and dielectric behaviour of phosphatidylcholine in non-polar solvents

✍ Scribed by J.P.M. Janson; M. Kunst; A. Rip; P. Bordewijk

Publisher: Elsevier Science
Year: 1972
Tongue: English
Weight: 540 KB
Volume: 9
Category: Article
ISSN: 0009-3084
DOI: 10.1016/0009-3084(72)90010-2

No coin nor oath required. For personal study only.

✦ Synopsis

It is demonstrated from vapour-pressure osmometric data on solutions of phosphatidylcholine in benzene in the concentration range 0.015-0.08 mole/1 that under these conditions PC forms aggregates of about 15 molecules. From dielectric measurements it follows that in these aggregates the dipoles of the PC molecules compensate each other to an important extent, the amount of compensation decreasing with increasing temperature. From the aggregate size it follows that the dielectric relaxation must be due to the reorientation of PC molecules within the aggregates.

📜 SIMILAR VOLUMES

Ionic association and dielectric relaxat

Ionic association and dielectric relaxation of alkylammonium salts in non polar solvents

✍ H. Cachet; J. C. Lestrade 📂 Article 📅 2010 🏛 Wiley (John Wiley & Sons) ⚖ 381 KB 👁 1 views

Mixtures of phenol with non-polar solven

Mixtures of phenol with non-polar solvents: thermodynamic, dielectric, and n.m.r. properties

✍ F. Kohler; E. Liebermann; R. Schano; H.E. Affsprung; J.K. Morrow; K. Sosnkowska- 📂 Article 📅 1975 🏛 Elsevier Science 🌐 English ⚖ 612 KB

Isomerization of 1,2-dichloroethane in p

Isomerization of 1,2-dichloroethane in polar and non-polar solvents

✍ J.-M. Depaepe; J.-P. Ryckaert 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 563 KB

We study the solvent effects on the isomerization of 1,2-dichloroethane in acetonitrile, chloromethane and carbon tetrachloride by molecular dynamics simulation. The stabilization of the gauche conformer in polar solvents is found to be accompanied by a decrease in the (transition state) isomerizati

The spectroscopic behaviour of rhodamine

The spectroscopic behaviour of rhodamine 6G in polar and non-polar solvents and in thin glass and PMMA films

✍ Renata Reisfeld; Rivka Zusman; Yoram Cohen; Marek Eyal 📂 Article 📅 1988 🏛 Elsevier Science 🌐 English ⚖ 509 KB

Absorption, fluorescence, quantum yields and lifetimes of rhodamine 6G in water, methanol, dichloroethane and chloroform were measured. From a comparison of these quantities with those for thin glass and plastic films conclusions are drawn about dimer formation and the stability of rhodamine 6G in t

Induced birefringence and dielectric pol

Induced birefringence and dielectric polarization in fluids of non-polar ellipsoids

✍ Wolffram Schröer 📂 Article 📅 1986 🏛 Elsevier Science 🌐 English ⚖ 557 KB

The local amplitude of an applied electric field polarizing a fluid comprising non-spherical molecules has components whrch depend on the average polarization of the sample and fluctuate with the molecular orientation. In isotropic fluids only the contraction of these fluctuations with the anisotrop

Adiabatic compressibility of polymer sol

Adiabatic compressibility of polymer solutions-IV polypropyleneoxide in polar and non-polar solvents

✍ W. Bell; R.A. Pethrick 📂 Article 📅 1975 🏛 Elsevier Science 🌐 English ⚖ 331 KB

Adiabatic compressibility measurements on solutions of polypropyleneoxides of various molecular weight in polar and non-polar solvents are reported. This study supports the previous observation of an apparent molecular weight dependence of the adiabatic compressibilit} of pol,,-alkyloxides in toluen