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- W3160997302 abstract "• Supramolecular 3D framework of pyrene and Schiff base , as donor-acceptor pair. • Nonporous and dynamic porous structure rendered by the variation of the pyrene-linker length. • Facile pyrene-Schiff base charge transfer at room tempearture, confirmed by EPR and DFT calculations. We report the synthesis, structural characterization and photophysical properties of two 3D supramolecular architectures formed by the coordination driven self-assembly of pyrene and Schiff base linkers, as a donor-acceptor (D-A) pair. The monotopic functionality of the pyrene (as pyrenemonocarboxylic acid and pyrenebutyric acid) and ditopic Schiff base with Cd 2+ render 1D coordination polymers (CPs), which are interdigitated via non-covalent interactions to form 3D supramolecular frameworks. The pyrenemonocarboxylic acid containing CP forms a dense structure, while the pyrenebutyric acid containing CP is porous and dynamic, as confirmed by the gas and solvent vapour adsorption experiments. Structural insight from the X-ray crystal structures and photophysical characterizations of the CPs reveal that pyrene and Schiff base form a stable charge transfer (CT) state. The variable alkyl chain lengths of the pyrene linkers tune the porosity, however, allow strong π-π and C–H-π interactions among the D-A units rendering facile CT, as confirmed by EPR and DFT calculations." @default.
- W3160997302 created "2021-05-24" @default.
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- W3160997302 date "2021-10-01" @default.
- W3160997302 modified "2023-09-25" @default.
- W3160997302 title "Coordination driven self-assembly of donor-acceptor linkers in 3D supramolecular frameworks: Ground state charge transfer and tunable porosity" @default.
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- W3160997302 doi "https://doi.org/10.1016/j.materresbull.2021.111388" @default.
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