摘要

Aromatic oligoamides 2a, 2b, and 2c of increasing chain lengths were prepared and further characterized for their folding behaviour. These oligomers were derived by relaxing the backbone-constraint of a series of oligoamides that fold into well-defined conformations. With their backbones of increased flexibility, the resultant 2a-c were found to form with considerably improved efficiencies, and undergo highly cooperative folding that depends on chain length, solvents, and temperature.