Abstract
The exchange of electric charges between a chemical reaction centre and an external electrical circuit is critical for many real-life technologies. This perspective explores the "wiring" of highly redox-active molecular metal oxide anions, so-called polyoxometalates (POMs) to conductive organic polymers (CPs). The major synthetic approaches to these organic-inorganic hybrid materials are reviewed. Typical applications are highlighted, emphasizing the current bottlenecks in materials development. Utilization of the composites in the fields of energy conversion, electrochemical energy storage, sensors and nanoparticle "wiring" into conductive materials are discussed. The outlook section presents the authors' views on emerging fields of research where the combination of POMs and CPs can be expected to provide novel materials for groundbreaking new technologies. These include light-weight energy storage, high-sensitivity toxin sensors, artificial muscles, photoelectrochemical devices and components for fuel cells.
Highlights
IntroductionUniversity Erlangen-Nuremberg (Germany) and completed his MSc project in 2013 in the group of Carsten Streb
Since the pioneering days of polymer development in the late 18th century, polymeric materials have conquered virtually allOne ground-breaking polymer class with high relevance for applications in electronics and energy systems are conductingSven Herrmann studied chemistry at Friedrich-Alexander-University Erlangen-Nuremberg (Germany) and completed his MSc project in 2013 in the group of Carsten Streb
The results suggest that evaporation-driven polymerization could be developed into a general process to coat substrates with thin films of conductive POM/conductive organic polymers (CPs) composites, significantly widening their application range
Summary
University Erlangen-Nuremberg (Germany) and completed his MSc project in 2013 in the group of Carsten Streb. In 2013 he became Professor of Inorganic Chemistry at Ulm University (Germany) His current research interests are novel synthetic routes to functional molecular metal oxides for sustainable energy conversion and storage. One striking feature of POMs is their ability to be functionalized by incorporation of virtually any metal ion from the periodic table, giving one of the chemically and structurally most diverse classes of inorganic materials.[20] This versatility can be used to form highly redox-active molecular materials which can undergo complex one- and multi-electron transfer, making POMs highly sought-after functional materials for a myriad of applications.[17,21] This Perspective will summarize the most outstanding recent accomplishments in polyoxometalate-functionalized conducting polymers and will give an overview of the principal synthetic routes to POM/CP composites and their current applications.
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