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      Interplay Between J‐ and H‐Type Coupling in Aggregates of π‐Conjugated Polymers: A Single‐Molecule Perspective

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          Abstract

          Strong dipole–dipole coupling within and between π‐conjugated segments shifts electronic transitions, and modifies vibronic coupling and excited‐state lifetimes. Since J‐type coupling between monomers along the conjugated‐polymer (CP) chain and H‐type coupling of chromophores between chains of a CP compete, a superposition of the spectral modifications arising from each type of coupling emerges, making the two couplings hard to discern in the ensemble. We introduce a single‐molecule H‐type aggregate of fixed spacing and variable length of up to 10 nm. HJ‐type aggregate formation is visualized intuitively in the scatter of single‐molecule spectra.

          Abstract

          Coupling therapy: In organic electronics, J‐type coupling between monomers along the chain and H‐type coupling of chromophores between chains compete, which makes the two types of coupling hard to discern in the ensemble. A single‐molecule H‐type aggregate of fixed spacing and variable length of up to 10 nm is introduced, and HJ‐type aggregate formation is visualized intuitively in the scatter of single‐molecule spectra.

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          Author and article information

          Contributors
          jan.vogelsang@ur.de
          hoeger@uni-bonn.de
          john.lupton@ur.de
          Journal
          Angew Chem Int Ed Engl
          Angew. Chem. Int. Ed. Engl
          10.1002/(ISSN)1521-3773
          ANIE
          Angewandte Chemie (International Ed. in English)
          John Wiley and Sons Inc. (Hoboken )
          1433-7851
          1521-3773
          06 November 2019
          19 December 2019
          : 58
          : 52 ( doiID: 10.1002/anie.v58.52 )
          : 18898-18902
          Affiliations
          [ 1 ] Institut für Angewandte und Experimentelle Physik Universität Regensburg Universitätsstrasse 31 93053 Regensburg Germany
          [ 2 ] Kekulé-Institut für Organische Chemie und Biochemie Universität Bonn Gerhard-Domagk-Strasse 1 53121 Bonn Germany
          Article
          ANIE201912374
          10.1002/anie.201912374
          6973276
          31596527
          © 2019 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.

          This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

          Page count
          Figures: 4, Tables: 0, References: 59, Pages: 5, Words: 0
          Product
          Funding
          Funded by: Deutsche Forschungsgemeinschaft , open-funder-registry 10.13039/501100001659;
          Award ID: 319559986
          Categories
          Communication
          Communications
          Organic Electronics
          Custom metadata
          2.0
          December 19, 2019
          Converter:WILEY_ML3GV2_TO_JATSPMC version:5.7.5 mode:remove_FC converted:21.01.2020

          Chemistry

          single-molecule spectroscopy, organic electronics, macrocycles, electronic coupling

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