title: Aromatic oligoamide macrocycles with a backbone of reduced constraint.
abstract: Oligoamide macrocycles with a backbone partially constrained by hydrogen bonds have been prepared. These macrocycles, carrying multiple H-bonding side chains, underwent strong aggregation in solution and form long fibers in the solid state. In contrast to the strong and specific complexation of the guanidinium ion by analogous macrocycles with fully H-bond-constrained backbones, these macrocycles failed to recognize the same cation, indicating that reducing backbone constraint has led to a drastic change in their cavity.
authors.affiliation: Department of Chemistry, The State University of New York at Buffalo , Buffalo, New York 14260, United States, and College of Chemistry, Beijing Normal University , Beijing 100875, China.
authors.forename: Mark
authors.initials: M
authors.lastname: Kline
authors.forename: Xiaoxi
authors.initials: X
authors.lastname: Wei
authors.forename: Bing
authors.initials: B
authors.lastname: Gong
mesh_terms: D000577:Amides / Q000737:chemistry; D019791:Guanidine / Q000737:chemistry; D006860:Hydrogen Bonding; D007477:Ions / Q000737:chemistry; D047028:Macrocyclic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure
chemical_list: D000577:Amides; D007477:Ions; D047028:Macrocyclic Compounds; D019791:Guanidine