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- W2950952905 abstract "This Feature Article gives an account for a host of readily available foldamers and macrocycles with well-defined shapes and non-deformable cavities that appeared over the last decade. Efforts to create porous molecular structures have led to the establishment of an effective strategy for enforcing the folding of unnatural aromatic oligoamide strands based on an especially robust three-center (bifurcated) hydrogen-bonding interaction. Based on such a strategy, aromatic oligoamides adopting crescent and helical conformations that contain non-collapsible cavities of tunable diameters have been created. Extending the same folding principle to the preparation of aromatic polyamides that would adopt pore-containing helical conformation instead led to the discovery of a highly efficient, one-pot macrocyclization process. Such a one-pot macrocyclization process has been successfully applied to the preparation of macrocycles with aromatic amide, hydrazide, urea and other backbones. Mechanistic study indicates that the high efficiencies observed for the formation of these macrocycles are due to the folding of the corresponding uncyclized oligomeric precursors of the corresponding macrocycles. Oligoamide macrocycles, along with their uncyclized, cavity-containing counterparts, i.e., crescent oligoamides, bind guests such as guanidinium (G) and octylguanidinium (OG) ions with tunable selectivity. Recent studies revealed that these rigid macrocycles tend to engage in extraordinarily strong, directional aggregation, leading to nanotubular assemblies containing pores of fixed sizes. Consistent with the presence of self-assembling nanopores, oligoamide macrocycles were found to assemble into transmembrane channels with high conductance." @default.
- W2950952905 created "2019-06-27" @default.
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- W2950952905 date "2013-03-14" @default.
- W2950952905 modified "2023-09-27" @default.
- W2950952905 title "ChemInform Abstract: Cavity-Containing, Backbone-Rigidified Foldamers and Macrocycles" @default.
- W2950952905 cites W2024777504 @default.
- W2950952905 doi "https://doi.org/10.1002/chin.201312223" @default.
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