Synthesis and Characterization of Hybrid Materials Derived from Polyaniline and Lacunary Keggin‐type Polyoxotungstates

Abstract

AbstractOrganic‐inorganic hybrid materials are an upcoming class of materials that attract increasing research interest. In the present manuscript, we report on the combination of a particularly versatile organic matrix – the conductive polymer polyaniline (PAni) – with a special type of polyoxometalates (POMs), namely a lacunary Keggin anion, [AsW9O33]9–. Although the high application potential and the manifold structural motifs of POMs provide an almost infinite number of options for composite materials, up to now, only few POM‐polymer combinations have been explored in more detail. Thus, we have investigated the interaction of PAni with the unique reactivity of [AsW9O33]9– that combines building‐block facilities with the presence of a lone pair on the heteroatom. The resulting composite material was characterized with a wide spectrum of analytical techniques and the effect on the reaction conditions on the nanoscale structuring was investigated. Furthermore, the newly synthesized POM‐PAni composites display a stable temperature‐dependent resistivity that renders them promising for further applications.