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Anisotropic energy transfer in crystalline chromophore assemblies

Author

Listed:
  • Ritesh Haldar

    (Hermann-von-Helmholtz Platz-1)

  • Marius Jakoby

    (Hermann-von-Helmholtz Platz-1)

  • Antoine Mazel

    (Universitè Lunam, Universitè de Nantes, CNRS, Chimie et Interdisciplinaritè: Synthèse, Analyse, Modèlisation (CEISAM), UMR 6230)

  • Qiang Zhang

    (Hermann-von-Helmholtz Platz-1
    Karlsruhe Institute of Technology (KIT))

  • Alexander Welle

    (Hermann-von-Helmholtz Platz-1)

  • Tawheed Mohamed

    (Hermann-von-Helmholtz Platz-1
    National Research Tomsk Polytechnic University (TPU), 30 Lenin ave)

  • Peter Krolla

    (Hermann-von-Helmholtz Platz-1)

  • Wolfgang Wenzel

    (Karlsruhe Institute of Technology (KIT))

  • Stéphane Diring

    (Universitè Lunam, Universitè de Nantes, CNRS, Chimie et Interdisciplinaritè: Synthèse, Analyse, Modèlisation (CEISAM), UMR 6230)

  • Fabrice Odobel

    (Universitè Lunam, Universitè de Nantes, CNRS, Chimie et Interdisciplinaritè: Synthèse, Analyse, Modèlisation (CEISAM), UMR 6230)

  • Bryce S. Richards

    (Hermann-von-Helmholtz Platz-1
    Karlsruhe Institute of Technology (KIT) Light Technology Institute (LTI), Engesserstrasse 13)

  • Ian A. Howard

    (Hermann-von-Helmholtz Platz-1
    Karlsruhe Institute of Technology (KIT) Light Technology Institute (LTI), Engesserstrasse 13)

  • Christof Wöll

    (Hermann-von-Helmholtz Platz-1)

Abstract

An ideal material for photon harvesting must allow control of the exciton diffusion length and directionality. This is necessary in order to guide excitons to a reaction center, where their energy can drive a desired process. To reach this goal both of the following are required; short- and long-range structural order in the material and a detailed understanding of the excitonic transport. Here we present a strategy to realize crystalline chromophore assemblies with bespoke architecture. We demonstrate this approach by assembling anthracene dibenzoic acid chromophore into a highly anisotropic, crystalline structure using a layer-by-layer process. We observe two different types of photoexcited states; one monomer-related, the other excimer-related. By incorporating energy-accepting chromophores in this crystalline assembly at different positions, we demonstrate the highly anisotropic motion of the excimer-related state along the [010] direction of the chromophore assembly. In contrast, this anisotropic effect is inefficient for the monomer-related excited state.

Suggested Citation

  • Ritesh Haldar & Marius Jakoby & Antoine Mazel & Qiang Zhang & Alexander Welle & Tawheed Mohamed & Peter Krolla & Wolfgang Wenzel & Stéphane Diring & Fabrice Odobel & Bryce S. Richards & Ian A. Howard , 2018. "Anisotropic energy transfer in crystalline chromophore assemblies," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06829-3
    DOI: 10.1038/s41467-018-06829-3
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