Conclusions
In this article we have presented some recent achievements of the polyoxometalates in the fields of molecular magnetism and functional molecular materials. In the context of the molecular magnetism we have shown that POMs provide ideal examples of magnetic clusters with coexisting ferro and antiferromagnetic exchange interactions which can be investigated using a variety of magnetic techniques, including the Inelastic Neutron Scattering spectroscopy, to get a thorough characterization of the magnetic levels in these large clusters, and to test the validity of the spin hamiltonians commonly used in magnetism.
In the context of the molecular materials we have shown that these cluster anions can be combined with perylene organic donors to form crystalline radical salts with unprecedented organic packings and large electrical conductivities. On the other hand, we have shown that nanostructured hybrid films formed by monolayers of ferromagnetic polyoxometalates alternating with of mixed-valence TTF-type monolayers can be constructed by using the Langmuir-Blodgett technique. More and more complex systems are expected to be obtained in the future starting from molecular units. POMs have shown to be very useful building blocks in this context.
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Clemente-Juan, J.M. et al. (2002). Polyoxometalates: From Magnetic Models to Multifunctional Materials. In: Yamase, T., Pope, M.T. (eds) Polyoxometalate Chemistry for Nano-Composite Design. Nanostructure Science and Technology. Springer, Boston, MA. https://doi.org/10.1007/0-306-47933-8_13
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