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Connecting Molecular Structure and Exciton Diffusion Length in Rubrene Derivatives

Authors

  • Tyler K. Mullenbach,

    1. Department of Chemical Engineering and Materials Science, University of Minnesota, 151 Amundson Hall, 421 Washington Ave. S.E., Minneapolis, MN 55455, USA
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  • Kathryn A. McGarry,

    1. Department of Chemistry, 139 Smith Hall, 207 Pleasant St. S.E., Minneapolis MN 55455, USA
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  • Wade A. Luhman,

    1. Department of Chemical Engineering and Materials Science, University of Minnesota, 151 Amundson Hall, 421 Washington Ave. S.E., Minneapolis, MN 55455, USA
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  • Christopher J. Douglas,

    Corresponding author
    1. Department of Chemistry, 139 Smith Hall, 207 Pleasant St. S.E., Minneapolis MN 55455, USA
    • Department of Chemistry, 139 Smith Hall, 207 Pleasant St. S.E., Minneapolis MN 55455, USA.
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  • Russell J. Holmes

    Corresponding author
    1. Department of Chemical Engineering and Materials Science, University of Minnesota, 151 Amundson Hall, 421 Washington Ave. S.E., Minneapolis, MN 55455, USA
    • Department of Chemical Engineering and Materials Science, University of Minnesota, 151 Amundson Hall, 421 Washington Ave. S.E., Minneapolis, MN 55455, USA
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Abstract

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Connecting molecular structure and exciton diffusion length in rubrene derivatives demonstrates how the diffusion length of rubrene can be enhanced through targeted functionalization aiming to enhance self-Förster energy transfer. Functionalization adds steric bulk, forcing the molecules farther apart on average, and leading to increased photoluminescence efficiency. A diffusion length enhancement greater than 50% is realized over unsubstituted rubrene.

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