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Synthesis and characterization of hybrid materials derived from polyaniline and lacunary Keggin-type polyoxotungstates


Chimamkpam, E F C; Hussain, F; Engel, A; Schilling, A; Patzke, Greta R (2009). Synthesis and characterization of hybrid materials derived from polyaniline and lacunary Keggin-type polyoxotungstates. Zeitschrift für Anorganische und Allgemeine Chemie, 635(4-5):624-630.

Abstract

Organic-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.

Abstract

Organic-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.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:530 Physics
540 Chemistry
Language:English
Date:2009
Deposited On:05 Jan 2010 10:10
Last Modified:06 Dec 2017 22:21
Publisher:Wiley-Blackwell
ISSN:0044-2313
Publisher DOI:https://doi.org/10.1002/zaac.200801394

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