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    Smart High-κ Nanodielectrics Using Solid Supported Polyoxometalate-Rich Nanostructures

    Year: 2011

    Journal: ACS Nano, 2011, 5 (12), 9992–9999, 20131009

    Authors: Chiara Musumeci, Mali H. Rosnes, Filippo Giannazzo, Mark D. Symes, Leroy Cronin, Bruno Pignataro

    Organizations: Superlab-Consorzio Catania Ricerche, Stradale Primosole 50, 95121 Catania, Italy; School of Chemistry, WestCHEM, University of Glasgow, Glasgow, G12 8QQ, United Kingdom; CNR-IMM, Strada VIII, 5, Zona Industriale, 95121, Catania, Italy; Dipartimento di Chimica “S. Cannizzaro”, Università di Palermo, V.le delle Scienze 90128 Palermo, Italy

    Utilizing Langmuir–Blodgett deposition and scanning probe microscopy, we have investigated the extent to which cations alter the self-assembly processes of hybrid polyoxometalates (POMs) on surfaces. The well-defined 2D hexagonal nanostructures obtained were extensively characterized and their properties were studied, and this has revealed fascinating dielectric behavior and reversible capacitive properties. The nanostructures are extremely stable under ambient conditions, and yet exhibit fascinating self-patterning upon heating. These findings present POMs as effective smart nanodielectrics and open up a new field for future POM applications.