The Headgroup (A)Symmetry Strongly Determines the Aggregation Behavior of Single-Chain Phenylene-Modified Bolalipids and Their Miscibility with Classical Phospholipids
作者:Simon Drescher、Bob-Dan Lechner、Vasil M. Garamus、László Almásy、Annette Meister、Alfred Blume
DOI:10.1021/la501160s
日期:2014.8.12
We show that different headgroup symmetries lead to a change in the aggregation behavior: Whereas PC-C17pPhC17-PC forms nanofibers with a diameter of 5.7 nm that transform into small ellipsoidal micelles at 23 °C, the PC-C17pPhC17-OH self-assembles into lamellae with bolalipid molecules in an antiparallel orientation up to high temperatures. Furthermore, the mixing behavior of both bolalipids with
Pair-Wise Interactions by Gas Chromatography; Part III:<sup>1,2</sup>Synthesis of Isosteric Stationary Phases for Gas Chromatography
作者:Roland Cloux、Guy Défayes、Klára Fóti、Jean-Claude Dutoit、Ervin Sz. Kováts
DOI:10.1055/s-1993-25968
日期:——
Retention in gas/liquid partition chromatography depends on the size and, to a lesser extent, on the form of the solvent used as stationary phase. How the measurement of interaction free enthalpies between a functional group and a solute free of size and form effects synthesis and properties of seven high molecular weight solvents is described. The monofunctional paraffin derivatives have the same form and nearly the same molar volume as that of their parent alkane 19,24-dioctadecyldotetracontane.