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Maufort A, Cerdá J, Van Hecke K, Deduytsche D, Verding A, Ruttens B, Li W, Detavernier C, Lutsen L, Quarti C, Vanderzande D, Beljonne D, Van Gompel WTM. Elucidating the Non-Covalent Interactions that Trigger Interdigitation in Lead-Halide Layered Hybrid Perovskites. Inorg Chem 2024; 63:5568-5579. [PMID: 38470041 DOI: 10.1021/acs.inorgchem.3c04536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
Two-dimensional (2D) hybrid organic-inorganic perovskites constitute a versatile class of materials applied to a variety of optoelectronic devices. These materials are composed of alternating layers of inorganic lead halide octahedra and organic ammonium cations. Most perovskite research studies so far have focused on organic sublattices based on phenethylammonium and alkylammonium cations, which are packed by van der Waals cohesive forces. Here, we report a more complex organic sublattice containing benzotriazole-based ammonium cations packed through interdigitated π-π stacking and hydrogen bonding. Single crystals and thin films of four perovskite derivatives are studied in depth with optical spectroscopy and X-ray diffraction, supported by density-functional theory calculations. We quantify the lattice stabilization of interdigitation, dipole-dipole interactions, and inter- as well as intramolecular hydrogen bonding. Furthermore, we investigate the driving force behind interdigitation by defining a steric occupancy factor σ and tuning the composition of the organic and inorganic sublattice. We relate the phenomenon of interdigitation to the available lattice space and to weakened hydrogen bonding to the inorganic octahedra. Finally, we find that the stabilizing interactions in the organic sublattice slightly improve the thermal stability of the perovskite. This work sheds light on the design rules and structure-property relationships of 2D layered hybrid perovskites.
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Affiliation(s)
- Arthur Maufort
- Hybrid Materials Design, Institute for Materials Research (imo-imomec), Hasselt University, Martelarenlaan 42, B-3500 Hasselt, Belgium
| | - Jesús Cerdá
- Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Kristof Van Hecke
- XStruct, Department of Chemistry, Ghent University, Krijgslaan 281-S3, B-9000 Ghent, Belgium
| | - Davy Deduytsche
- Conformal Coating of Nanomaterials, Department of Solid State Sciences, Ghent University, Krijgslaan 281-S1, B-9000 Ghent, Belgium
| | - Arne Verding
- Hybrid Materials Design, Institute for Materials Research (imo-imomec), Hasselt University, Martelarenlaan 42, B-3500 Hasselt, Belgium
| | - Bart Ruttens
- Imec-imomec, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - Wei Li
- Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Christophe Detavernier
- Conformal Coating of Nanomaterials, Department of Solid State Sciences, Ghent University, Krijgslaan 281-S1, B-9000 Ghent, Belgium
| | - Laurence Lutsen
- Hybrid Materials Design, Institute for Materials Research (imo-imomec), Hasselt University, Martelarenlaan 42, B-3500 Hasselt, Belgium
- Imec-imomec, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - Claudio Quarti
- Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Dirk Vanderzande
- Hybrid Materials Design, Institute for Materials Research (imo-imomec), Hasselt University, Martelarenlaan 42, B-3500 Hasselt, Belgium
- Imec-imomec, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - David Beljonne
- Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Wouter T M Van Gompel
- Hybrid Materials Design, Institute for Materials Research (imo-imomec), Hasselt University, Martelarenlaan 42, B-3500 Hasselt, Belgium
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