Supramolecular Self-Assembly as a Tool To Preserve the Electronic Purity of Perylene Diimide Chromophores.

Autor: Heckelmann I; Cavendish Laboratory, University of Cambridge, Cambridge, CB30HE, UK.; Institute for Quantum Electronics, ETH Zürich, 8093, Zurich, Switzerland., Lu Z; Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB21EW, UK., Prentice JCA; Department of Materials, University of Oxford, Oxford, OX13PH, UK., Auras F; Cavendish Laboratory, University of Cambridge, Cambridge, CB30HE, UK.; Department of Synthetic Materials and Functional Devices, Max Planck Institute of Microstructure Physics, 06120, Halle, Germany., Ronson TK; Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB21EW, UK., Friend RH; Cavendish Laboratory, University of Cambridge, Cambridge, CB30HE, UK., Nitschke JR; Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB21EW, UK., Feldmann S; Cavendish Laboratory, University of Cambridge, Cambridge, CB30HE, UK.; Rowland Institute, Harvard University, Cambridge, MA 02142, USA.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2023 Mar 13; Vol. 62 (12), pp. e202216729. Date of Electronic Publication: 2023 Feb 08.
DOI: 10.1002/anie.202216729
Abstrakt: Organic semiconductors are promising for efficient, printable optoelectronics. However, strong excited-state quenching due to uncontrolled aggregation limits their use in devices. We report on the self-assembly of a supramolecular pseudo-cube formed from six perylene diimides (PDIs). The rigid, shape-persistent cage sets the distance and orientation of the PDIs and suppresses intramolecular rotations and vibrations, leading to non-aggregated, monomer-like properties in solution and the solid state, in contrast to the fast fluorescence quenching in the free ligand. The stabilized excited state and electronic purity in the cage enables the observation of delayed fluorescence due to a bright excited multimer, acting as excited-state reservoir in a rare case of benign inter-chromophore interactions in the cage. We show that self-assembly provides a powerful tool for retaining and controlling the electronic properties of chromophores, and to bring molecular electronics devices within reach.
(© 2023 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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