2D Supramolecular Assemblies of Benzene-1,3,5-triyl-tribenzoic Acid: Temperature-Induced Phase Transformations and Hierarchical Organization with Macrocyclic Molecules

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• 作者：Mario Ruben ; Dietmar Payer ; Aitor Landa ; Alessio Comisso ; Chiara Gattinoni ; Nian Lin ; Jean-Paul Collin ; Jean-Pierre Sauvage ; Alessandro De Vita ; Klaus Kern
• 刊名：Journal of the American Chemical Society
• 出版年：2006
• 出版时间：December 13, 2006
• 年：2006
• 卷：128
• 期：49
• 页码：15644 - 15651
• 全文大小：736K
• 年卷期：v.128,no.49(December 13, 2006)
• ISSN：1520-5126

文摘

Two-dimensional supramolecular honeycomb networks with cavities of an internal diameter of2.95 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 phasetransformations into closer-packed supramolecular arrangements. The phase transformations are associatedwith stepwise deprotonation of the carboxylic acid groups. The voids of the honeycomb network of BTAhave a suitable size for the construction of hierarchical structures with guest molecules. Single moleculesof the macrocyclic compound mt-33 were successfully confined inside 2D nanocavities of the honeycombnetworks and released when the phase was transformed to the close-packed structure.