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Design of molecule-based magnetic conductors

Nano Research 2014年第12期7卷 1832-1842页

作者： Naureen Akhtar Graeme R. Blake Roberto Felici Heinz Amenitsch Thomas T. M. Palstra Petra Rudolf Zernike Institute for Advanced materials University of Groningen Nijenborgh 4 NL-9747AG Groningen The Netherlands ESRF BP 220 F-38043 Grenoble Cedex 9 France Institute of Inorganic Chemistry Graz University of Technology Stremayerg. 9/IV A-8010 Graz Austria

Enabling the use of rationally designed thin films in technological devices is a recognized goal in materials science. However, constructing such thin films using highly ordered supramolecular architectures with well-controlled size and growth direction has remained an elusive target. Here, we introduce a layer-by- layer protocol to grow hybrid thin films of molecule-based magnetic conductors comprising arachidic acid and donor bis（ethylenedioxy）tetrathiafulvalene （BEDO-TTF） as the organic component and Cu/Gd complexes as the inorganic component. The construction of layered hybrid thin films was achieved at ambient conditions by employing the Langmuir-Blodgett method, which provides good control over film thickness and packing of molecules in the monolayer. As demonstrated by X-ray diffraction, these films are crystalline with distinct organic and inorganic sublattices, where the BEDO-TTF molecular layer is interfaced with the inorganic layer. Due to the flexibility of the Langmuir-Blodgett deposition technique, this result indicates a route toward the preparation of well-ordered films with various functionalities, determined by the choice of the inorganic compound that is combined with the π-unit of BEDO-TFF. Moreover, the ability to deposit films on a variety of substrates establishes the potential for lower-cost device fabrication on inexpensive substrates.

关键词： molecule-based materials self-assembly ordered heterostructures multifunctionality ultra-thin films

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