Improved Electronic Transport in Ion Complexes of Crown Ether Based Columnar Liquid Crystals

Electronic coupling responsible for energy transfer in columnar liquid crystals

Electronic coupling is the driving force for energy transfer in molecular materials and consists of several components. We determine the strength of dipolarrmultipolar coupling and coupling due to orbital overlap for excitation transport in triphenylene columnar liquid crystals. We use time-resolved fluorescence spectroscopy and computer simulations. The fit of the experimental and simulated fl...

Dielectric Investigations on Ferroelectric Columnar Liquid Crystals

Cold Spectroscopy of Metal Ion-Crown Ether Complexes in the Gas Phase

The effect of the presence of crown ether on ion transport across the lipid bilayer.

We studied the electric properties of phosphatidylcholine bilayers modified with crown ether (dibenzo[18] crown-6). The studies were carried out for various crown ether concentrations in forming solutions and various potassium ion concentrations in electrolyte solutions. The presence of crown ether in the membrane influences the membrane's impedance; there is a reduction in its resistivity, a d...

Heterogeneous dynamics in columnar liquid crystals of parallel hard rods.

In the wake of previous studies on the rattling-and-jumping diffusion in smectic liquid crystal phases of colloidal rods, we analyze here for the first time the heterogeneous dynamics in columnar phases. More specifically, we perform computer simulations to investigate the relaxation dynamics of a binary mixture of perfectly aligned hard spherocylinders. We detect that the columnar arrangement ...