Amidourea-Based Hydrogen-Bonded Heteroduplexes: Structure and Assembling Selectivity

摘要

A new class of multiply hydrogen-bonded heteroduplexes from readily available amidourea derivatives wasndesigned, and their structures and selective assembling behaviors were investigated. Amidourea derivative 3 could selectivelynassemble with 1 to form a stable heteroduplex via eight intermolecular bifurcated hydrogen bonds, but could not assemble with 2nat all, because of their unique structures and the spacing effect, although 1 and 2 possessed the same hydrogen-bonding sequence.nThe high stability and selectivity will make the amidourea-based hydrogen-bonded heteroduplexes be potentially applicable in thendesign of well-defined supramolecular architectures and novel functional materials.