Protons as the Triggers to Regulate Hydrogen-Bonding Receptors
作者:Mohammad H. Al-Sayah、Neil R. Branda
DOI:10.1021/ol0170915
日期:2002.3.1
[reaction: see text] The protonation of alkylamines in twonovel receptors results in intramolecular host-guest associations between the resulting ammonium ions and crown ether macrocycles. These interactions result in conformational changes of the receptors and prevent them from acting as hydrogen bond complements for uracil and carboxylate guest species.