Naphthyridine-Based Helical Foldamers and Macrocycles: Synthesis, Cation Binding, and Supramolecular Assemblies
作者:Anne Petitjean、Louis A. Cuccia、Marc Schmutz、Jean-Marie Lehn
DOI:10.1021/jo702495u
日期:2008.4.1
cations bind to the one-turn helices and macrocycles to promote fibril formation and aggregation. Also, polyammonium substrates are able to tune the length of the overall helix assemblies and the rigidity of long oligomers. The reported data on one-turn, two-turn helices and macrocycles not only allows one to devise a model for the ion-controlled supramolecularassembly of such systems but also provides evidence
equivalent dimetallic centers of each bis-dimetallic compound are split, with the splitting — a measure of the electronic coupling — depending on both the metal and bridging ligand. The mixed-valence species of the dirhodium species was investigated, and the electronic coupling matrix element calculated from the experimental intervalence band parameters for one of them (86 cm–1) indicates a significant