作者:Huaqiang Zeng、Rebecca S. Miller、Robert A. Flowers、Bing Gong
DOI:10.1021/ja9942742
日期:2000.3.1
This paper describes the design, synthesis, and characterization of a hydrogen-bonded molecular duplex (3·4). Two oligoamide molecular strands, 3 and 4, with the complementary hydrogen-bonding sequences ADAADA and DADDAD, respectively, were found to form an extremely stable (Ka = (1.3 ± 0.7) × 109 M-1) molecular duplex (3·4) in chloroform. Evidence from 1D and 2D 1H NMR spectroscopy, isothermal titration
本文描述了氢键分子双链体 (3·4) 的设计、合成和表征。发现分别具有互补氢键序列 ADAADA 和 DADDAD 的两条寡酰胺分子链 3 和 4 形成极其稳定的 (Ka = (1.3 ± 0.7) × 109 M-1) 分子双链体 (3·4)在氯仿中。来自 1D 和 2D 1H NMR 光谱、等温滴定量热法和薄层色谱的证据证实了双链体的形成和高稳定性。众多氢键和范德华相互作用之间的正协同作用以及分子内氢键对单个链的预组织可以解释这种特殊的稳定性。这种设计为具有可编程特异性和稳定性的超分子识别单元开辟了一条新途径。