Cover Picture: Supramolecular Self鈥怉ssembly as a Tool To Preserve the Electronic Purity of Perylene Diimide Chromophores (Angew. Chem. Int. Ed. 12/2023)
Angewandte Chemie International Edition Wiley 62:12 (2023)
Supramolecular Self鈥怉ssembly as a Tool To Preserve the Electronic Purity of Perylene Diimide Chromophores**
Angewandte Chemie Wiley 135:12 (2023)
Titelbild: Supramolecular Self鈥怉ssembly as a Tool To Preserve the Electronic Purity of Perylene Diimide Chromophores (Angew. Chem. 12/2023)
Angewandte Chemie Wiley 135:12 (2023)
Supramolecular self-assembly as a tool to preserve the electronic purity of perylene diimide chromophores
Angewandte Chemie International Edition Wiley 62:12 (2023) e202216729
Abstract:
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.Efficiently computing excitations of complex systems: linear-scaling time-dependent embedded mean-field theory in implicit solvent
ArXiv 2203.0471 (2022)