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Some manganese potentialities for modification of solid-state electrodes are discussed in the work. In particular, the ability of Mn2+ to incorporate easily thin lipid films deposited on to the electrode surface is stressed. The voltammetric analysis of thus modified glassy carbon electrodes (GCE) reveals possibilities for driving redox reactions in the electrolyte. The results suggest a transfer of electrons across the lipid phase mediated through the transitions of the embedded manganese. On the other hand, at higher concentrations the Mn2+ integration within the supported liquid films leads to changes in their structural parameters, evident from impedance data. In this respect, a comparison with the action of Ca2+ and Mg2+ shows a somewhat stronger impact of the Mn2+ ions. [Copyright &y& Elsevier]

The impact of some divalent cations on the structure of a model membrane system, comprising wetting lipid films, is assayed in this work. The results from impedimetry suggest prominent structural changes upon the addition of the discussed ions to the electrolyte solution contacting the film. These changes are manifested by the increase of resistivity of the films as well as by the decrease of capacitance dispersion. In accordance with other data in the literature, manganese (Mn2+) turned out to have an effect greater than those of Mg2+ and Ca2+. [Copyright &y& Elsevier]

Solid-supported thin liquid films of lipids, contacting an electrolyte phase, turned out to be a dependable system in the field of bosensors. The investigations of these objects during the past decade reveal some of their intriguing features enabling the application in constructions of receptor part with ‘two-dimensional’ arrangement. As a model system, complementary to the other artificial analogs of biomembranes, the wetting films of lipids offer certain advantages concerning the compromise between the stability and flexibility of the molecular structures involved in sensing. The basic principles underlaying the techniques of formation, as well as the conditions of the films stability are emphasized in the present consized review. While no limitations are imposed by the way of preparation, the films seem especially profitable in conjunction with methods for electrochemical signal transduction. In this regard some prominent examples are discussed. [Copyright &y& Elsevier]