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Macromolecular Chemistry I:

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van der Zwan, K.P.; Steinlein, C.; Kreger, K.; Schmidt, H.-W.; Senker, J.: Crystal Engineering of Supramolecular 1,4-Benzene Bisamides by Side-Chain Modification – Towards Tuneable Anisotropic Morphologies and Surfaces, ChemPhysChem, 22(24), 2585-93 (2021) -- DOI: 10.1002/cphc.202100597
The crystal structures of two series of 1,4-benzene bisamides with symmetric and asymmetric peripheral substitution were solved by NMR crystallography. The authors found that the bulkiness of the side groups guides the supramolecular self-assembly into one of two specific packing patterns. Their anisotropic crystal-growth behavior results in a defined nano-object morphology. Slim side chains, in our case perfluorinated alky chains, led to ribbon-like nano-objects, whereas bulky side chains led to thin platelets
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