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00925njm 22002777a 4500 dc García Melo, Fátima author Buendía, Julia author Sánchez Martín, Luis author 2011 Two amphiphilic C3-symmetric OPE-based trisamides have been synthesized and their self-assembling features investigated in solution and on surface. Variabletemperature UV vis experiments demonstrate the cooperative supramolecular polymerization of these trisamides that selfassemble by the operation of triple CdO 333 H N H-bonding arrays between the amide functional groups and π π stacking between the aromatic units. The helical organization of the aggregates has been demonstrated by circular dichroism at a concentration as low as 1 10 4 M in acetonitrile. In the reported trisamides, the large hydrophobic aromatic core acts as a solvophobic module impeding the interaction between the polar TEG chains and the amide H-bonds. This strategy makes unnecessary the separation of the amide functional groups to the polar tri(ethylene glycol) chains by paraffinic fragments. Achiral trisamide 1 self-assembles into flat ribbon-like structures that experience an amplification of chirality by the addition of a small amount of chiral 2 that generates twisted stripes Fátima García, Julia Buendía, and Luis Sánchez The Journal of Organic Chemistry 2011 76 (15), 6271-6276 DOI: 10.1021/jo201055t 1520-6904 10.1021/jo201055t https://hdl.handle.net/20.500.14352/94845 https://doi.org/10.1021/jo201055t Supramolecular Ribbons from Amphiphilic Trisamides Self-Assembly