Collect. Czech. Chem. Commun. 2011, 76, 1917-1930
Published online 2012-01-26 13:14:09

Phospholipid layer stabilization via Yb(III) on ITIES and facilitated K(I) transport

Jana Jaklová Dytrtováa,*, Tomáš Navrátilb and Vladimír Marečekb

a Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, v.v.i., Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
b J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 3, 182 23 Prague 8, Czech Republic


The stabilization of lecithin layer physically adsorbed on the interface between two immiscible electrolyte solutions (ITIES) using addition of Yb3+ to the aqueous phase was studied using cyclic voltammetry. Stability of this layer was evaluated according to the time of the layer formation; the optimal time amounted to 180 s. The stability of the layer as a function of the potential applied on the system during the layer formation was investigated. The behavior of the monolayer during the layer polarization was studied by the facilitated K+ transport using dibenzo-18-crown-6. The stoichiometry of Yb/anion/lecithin complexes was investigated using electrospray ionization mass spectrometry (ESI-MS).

Keywords: Phospholipids; Membranes; Zwitterions; Ytterbium; Potassium; Electrochemistry; Artificial membranes; Cyclic voltammetry; Dipalmitoylphosphatidylcholine; Polarization; Electrospray ionization mass spectrometry (ESI-MS).

References: 47 live references.