Formation of a polymer layer from monomers adsorbed at a liquid∣liquid interface

Compact poly-pyrrole layers formed at a liquid|liquid interface

“…In contrast to the previous studies [1,5], polymer layers formed by the new monomers are sufficiently dense to inhibit the proton transfer reaction. …”

“…Simultaneously, inhibition of the transfer of base electrolyte ions TBA + and CBB À limiting the potential window can be observed. In the previous study [5] the forward reversible peak decreased only slightly and was shifted by 70 mV to more positive potentials in the presence of a polymer layer. Inhibition of H + transfer reaction assisted by DB18C6 is not as strong as in the case of potassium ion.…”

“…1) were determined by cyclic voltammetry at a gold microelectrode in 1,2-DCE. In contrast to monomers with one pyrrole unit in the molecule [1,5], the oxidation potentials of the new monomers were lower enabling a weaker oxidant Fe 3+ to be used in the aqueous phase, compared with Ce 4+ [1,5]. The use of Fe 3+ is advantageous because the solution acidity need not be as high as with Ce 4+ .…”

“…A typical example is stabilization of the phospholipid monolayer in the presence of multiply charged cations in the aqueous phase. However, at positive potentials the formed complex decomposes and the protonated phospholipid desorbs from the interface due to its positive charge [1,2]. Another example of a followup reaction is the formation of a chemical bond between the adsorbed molecules.…”

“…Another example of a followup reaction is the formation of a chemical bond between the adsorbed molecules. For actual preparation of a polymeric layer from a monomer, two approaches have been followed so far: 1. formation of oligomers in the organic phase and their precipitation at the interface [3,4]; 2. polymerization of the monomer adsorbed at the interface [1,5].…”