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Cyclic Self-Assembled Structures of Chlorophyll Dyes on HOPG by the Dendron Wedge Effect

Authors

  • Shinobu Uemura Dr.,

    1. Universität Würzburg, Institut für Organische Chemie and Röntgen Research Center for Complex Material Systems, Am Hubland, 97074 Würzburg (Germany), Fax: (+49) 931-318-4756
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  • Sanchita Sengupta,

    1. Universität Würzburg, Institut für Organische Chemie and Röntgen Research Center for Complex Material Systems, Am Hubland, 97074 Würzburg (Germany), Fax: (+49) 931-318-4756
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  • Frank Würthner Prof. Dr.

    1. Universität Würzburg, Institut für Organische Chemie and Röntgen Research Center for Complex Material Systems, Am Hubland, 97074 Würzburg (Germany), Fax: (+49) 931-318-4756
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  • We thank the Volkswagen foundation for financial support of our work within the research priority program “Complex Materials: Cooperative Projects of the Natural, Engineering and Biosciences”. S.U. thanks the DFG (Research Training School 1221) for a postdoctoral fellowship. HOPG=highly oriented pyrolytic graphite.

Abstract

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A molecular cake: Zinc chlorins with different dendron wedges can form linear or circular self-assembled structures with different molecular packing. In particular, zinc chlorins with six alkyl chains in the dendron group self-assemble into hexameric cyclic structures on HOPG (see picture). Such cyclic structures are reminiscent of (bacterio)chlorophyll organization in natural light-harvesting systems.

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