Advanced Materials

Inside Front Cover: Homeotropic Alignment of Columnar Liquid Crystals in Open Films by Means of Surface Nanopatterning (Adv. Mater. 6/2007)

Authors

  • R. I. Gearba,

    1. Institut de Chimie des Surfaces et Interfaces, CNRS UPR9069, 15, rue Jean Starcky, BP 2488, 68057 Mulhouse Cedex, France
    2. Present address: Brookhaven National Laboratory, National Synchrotron Light Source, 75 Brookhaven Avenue, Upton, NY 11973, USA
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  • D. V. Anokhin,

    1. Institut de Chimie des Surfaces et Interfaces, CNRS UPR9069, 15, rue Jean Starcky, BP 2488, 68057 Mulhouse Cedex, France
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  • A. I. Bondar,

    1. Laboratoire de Physique des Polymères, CP 223, Université Libre de Bruxelles, Bld. du Triomphe, 1050 Brussels, Belgium
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  • W. Bras,

    1. Netherlands Organization for Scientific Research (NWO), DUBBLE-CRG/ESRF, BP 220, 38043 Grenoble Cedex, France
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  • M. Jahr,

    1. Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09107 Chemnitz, Germany
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  • M. Lehmann,

    1. Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09107 Chemnitz, Germany
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  • D. A. Ivanov

    1. Institut de Chimie des Surfaces et Interfaces, CNRS UPR9069, 15, rue Jean Starcky, BP 2488, 68057 Mulhouse Cedex, France
    2. Laboratoire de Physique des Polymères, CP 223, Université Libre de Bruxelles, Bld. du Triomphe, 1050 Brussels, Belgium
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Abstract

Columnar liquid crystals (LCs) are found to spontaneously form homeotropically-aligned films when deposited on surfaces fabricated via friction transfer of polytetrafluoroethylene. The inside cover schematically shows the film structure of a phthalocyanine derivative together with the corresponding X-ray diffraction pattern (inset). The results, reported on p. 815 by Dmitri Ivanov and co-workers, indicate that not only are the columns homeotropically oriented but also that they form a single monodomain of macroscopic size. These findings can have an important impact for fabrication of LC-based organic solar cells.

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