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Cubic Mesoporous Frameworks with a Mixed Semiconductor Nanocrystalline Wall Structure and Enhanced Sensitivity to Visible Light

Authors

  • Michael H. Bartl Dr.,

    1. Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA, Fax: (+1) 805-893-4120
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  • Stefan P. Puls,

    1. Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA, Fax: (+1) 805-893-4120
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  • Jing Tang,

    1. Materials Department, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
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  • Helga C. Lichtenegger Dr.,

    1. Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA, Fax: (+1) 805-893-4120
    2. Institut für Werkstoffkunde und Materialprüfung, Technische Universität Wien, 1140 Wien, Austria
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  • Galen D. Stucky Prof. Dr.

    1. Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA, Fax: (+1) 805-893-4120
    2. Materials Department, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
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  • The authors thank Prof. Eric McFarland for access to his photo-electrochemistry set-up and Prof. Hellmut Eckert, Dr. Karen L. Frindell, Dr. Gernot Wirnsberger, and Prof. Alois Popitsch for helpful discussions. M.H.B. gratefully acknowledges the Austrian Academy of Sciences and the Max Kade Foundation for a Postdoctoral Research Fellowship. H.C.L. thanks the Fonds zur Förderung der Wissenschaftlichen Forschung (FWF), Austria, for financial support under award No. J2184. This work was supported in part by the NSF under Award No. DMR-02-33728. It made use of the MRL Central Facilities supported by the MRSEC Program of the NSF under Award No. DMR-00-80034. We thank BASF (Mt. Olive, NJ) for providing the Pluronic P123 block copolymer.

Abstract

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Hochgeordnete mesoporöse Filme mit einer Mehrkomponentenwandstruktur aus nanokristallinem Anatas zusammen mit amorphem Titandioxid und Cadmiumchalkogenid (siehe Bild, der Balken entspricht 20 nm) sind durch ein schnelles und einfaches Reagensglas-Syntheseverfahren auf der Grundlage von Sol-Gel-Chemie und supramolekularer Strukturdirektion zugänglich. Die Filme zeigten in Experimenten zur Photostromerzeugung erhöhte Empfindlichkeit für sichtbares Licht.

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