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Schlagwörter:
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Zusammenfassung:
Two-dimensional supramolecular honeycomb networks with cavities of an
internal diameter of 2.95 nm were formed by the self-assembly of
4,4',4"-benzene-1,3,5-triyl-tribenzoic acid (BTA) on a Ag(111) surface
at room temperature. Annealing to higher temperatures resulted in two
sequential phase transformations into closer-packed supramolecular
arrangements. The phase transformations are associated with stepwise
deprotonation of the carboxylic acid groups. The voids of the honeycomb
network of BTA have a suitable size for the construction of
hierarchical structures with guest molecules. Single molecules of the
macrocyclic compound mt-33 were successfully confined inside 2D
nanocavities of the honeycomb networks and released when the phase was
transformed to the close-packed structure.
