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Inside Front Cover: Hexagonal Network Organization of Dye-Loaded Zeolite L Crystals by Surface-Tension Driven Autoassembly (Adv. Funct. Mater. 17/2006)

Authors

  • S. Yunus,

    1. Istituto per lo Studio delle Macromolecole, CNR, Via E. Bassini 15, 20133 Milano, Italy
    2. Polo Scientifico Tecnologico, CNR, Via Fantoli 16, 20133 Milano, Italy
    3. Present address: Laboratoire de Physico-Chimie et de Physique des Matériaux, Université Catholique de Louvain, Place Croix du Sud 1, 1348 Louvain-la-Neuve, Belgium
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  • F. Spano,

    1. Istituto per lo Studio delle Macromolecole, CNR, Via E. Bassini 15, 20133 Milano, Italy
    2. Polo Scientifico Tecnologico, CNR, Via Fantoli 16, 20133 Milano, Italy
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  • G. Patrinoiu,

    1. Istituto per lo Studio delle Macromolecole, CNR, Via E. Bassini 15, 20133 Milano, Italy
    2. Polo Scientifico Tecnologico, CNR, Via Fantoli 16, 20133 Milano, Italy
    3. Present address: I. G. Murgulescu Institute of Physical Chemistry, Spl. Independentei 202, 77208 Bucharest, Romania
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  • A. Bolognesi,

    1. Istituto per lo Studio delle Macromolecole, CNR, Via E. Bassini 15, 20133 Milano, Italy
    2. Polo Scientifico Tecnologico, CNR, Via Fantoli 16, 20133 Milano, Italy
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  • C. Botta,

    1. Istituto per lo Studio delle Macromolecole, CNR, Via E. Bassini 15, 20133 Milano, Italy
    2. Polo Scientifico Tecnologico, CNR, Via Fantoli 16, 20133 Milano, Italy
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  • D. Brühwiler,

    1. Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3000 Bern 9, Switzerland
    2. Present address: Institute of Inorganic Chemistry, University of Zurich, Winterhurerstrasse 190, 8057 Zurich, Switzerland
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  • A. Z. Ruiz,

    1. Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3000 Bern 9, Switzerland
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  • G. Calzaferri

    1. Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3000 Bern 9, Switzerland
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Abstract

The two-dimensional (2D) ordering of zeolite  L crystals on polydimethylsiloxane is reported in the Full Paper by Yunus et al. on p. 2213. The highly fluorescent dye-loaded zeolite L crystals are organized into a 2D hexagonal network by surface-tension-driven autoassembly. The resulting film displays a hexagonal pattern of polarized fluorescence, reflecting the properties of the dye molecules in the parallel nanochannels of the zeolite crystals.

Highly fluorescent dye-loaded zeolite L crystals, approximately 1.4 μm long and 650 nm in diameter, are organized in a hexagonal network by a surface-tension-driven autoassembly process. A polydimethylsiloxane (PDMS) film presenting a trigonal ordering of spherical protuberances, including a polystyrene (PS) hexagonal network occupying their interstices, is chosen as the platform for the assembly. The overall wettability and the difference in surface tension between PDMS and PS surfaces are found to offer good conditions for ordering micrometric dye-loaded zeolite L crystals in a 2D hexagonal network. The resulting film displays a regular hexagonal pattern of polarized fluorescence, reflecting the polarization properties of the dye molecules inserted in the parallel nanochannels of the zeolites.

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