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Physical Institute

Spectroscopy of soft Matter group - Prof. Dr. Jürgen Köhler

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Energy and Charge Transfer Processes in Biomimetic Molecular Aggregates

Efficient transfer of electronic excitation energy is a key process in molecular electronics. In our group, we investigate molecular aggregates and small oligomeric model systems to shed light on the underlying physical properties that determine the efficiency and the range of the transport process.

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  • A. Issac, R. Hildner, C. Hippius, F. Würthner, J. Köhler
    Stepwise Decrease of Fluorescence vs. Sequential Photobleaching in a Single Multichromophoric System
    ACS Nano 8 (2014) 1708-1717, DOI: 10.1021/nn4060946
  • A.T. Haedler, K. Kreger, A. Issac, M. Kivala, N. Hammer, J. Köhler, H.-W. Schmidt, R. Hildner
    Long-Range Energy Transport in Single Supramolecular Nanofibres at Room Temperature
    Nature 523 (2015) 196-199, DOI: 10.1038/nature14570
  • T. Brixner, R. Hildner, J. Köhler. C. Lambert, F. Würthner
    Exciton Transport in Molecular Aggregates from Natural Antennas to Synthetic Chromophore Systems
    Advanced Energy Materials 7 (2017) 1700236, DOI: 10.1002/aenm.201700236
  • A. Löhner, T. Kunsel, T.L.C. Jansen, S. Sengupta, F. Würthner, M.I.S. Röhr, J. Knoester, J. Köhler
    Spectal- and structural variations of biomimetic light-harvesting nanotubes
    J. Phys. Chem Lett. 10 (2019), 2715-2724, DOI: 10.1021/acs.jpclett.9b00303
  • B. Wittmann, F.A. Wenzel, S. Wiesneth, A.T. Haedler, M. Drechsler, K. Kreger, J.
    Köhler, E. W. Meijer, H.-W. Schmidt, R. Hildner
    Enhancing Long-Range Energy Transport in Supramolecular Architectures by
    Tailoring Coherence Properties
    J. Am. Chem. Soc. 142 (2020), 8323-8330, DOI: 10.1021/jacs.0c01392
  • T. Kunsel, A. Löhner, J. Mayo, J. Köhler, T.L. C. Jansen, J. Knoester
    Unraveling intra-aggregate structural disorder using single-molecule spectroscopy
    J. Chem. Phys., 153 (2020), 134304-134304-12, DOI: 10.1063/5.0023551
  • B. Wittmann, T. Biskup, K. Kreger, J. Köhler, H.W. Schmidt, R. Hildner
    All-optical control of singlet exciton transport in individual supramolecular
    nanostructures by triplet gating
    Nanoscale Horizons, 6 (2021), 998, DOI: 10.1039/d1nh00514f

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