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Elaboration of Prussian Blue Analogue/Silica Nanocomposites: Towards Tailor-Made Nano-Scale Electronic Devices

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Author(s): Giulia Fornasieri | Merwen Aouadi | Emilie Delahaye | Patricia Beaunier | Dominique Durand | Eric Rivière | Pierre-Antoine Albouy | François Brisset | Anne Bleuzen

Journal: Materials
ISSN 1996-1944

Volume: 5;
Issue: 3;
Start page: 385;
Date: 2012;
Original page

Keywords: Prussian blue analogue | mesoporous silica | confined precipitation | photomagnetism | sol-gel

ABSTRACT
The research of new molecular materials able to replace classical solid materials in electronics has attracted growing attention over the past decade. Among these compounds photoswitchable Prussian blue analogues (PBA) are particularly interesting for the elaboration of new optical memories. However these coordination polymers are generally synthesised as insoluble powders that cannot be integrated into a real device. Hence their successful integration into real applications depends on an additional processing step. Nanostructured oxides elaborated by sol-gel chemistry combined with surfactant micelle templating can be used as nanoreactors to confine PBA precipitation and organize the functional nano-objects in the three dimensions of space. In this work we present the elaboration of different CoFe PBA/silica nanocomposites. Our synthetic procedure fully controls the synthesis of PBA in the porosity of the silica matrix from the insertion of the precursors up to the formation of the photomagnetic compound. We present results on systems from the simplest to the most elaborate: from disordered xerogels to ordered nanostructured films passing through mesoporous monoliths.
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