Selective recognition of quaternary ammonium ions and zwitterions by using a biomimetic bis-calix[6]arene-based receptor
作者:Steven Moerkerke、Volodymyr Malytskyi、Lionel Marcélis、Johan Wouters、Ivan Jabin
DOI:10.1039/c7ob02031g
日期:——
as a heteroditopic receptor that can bind biologically relevant quaternary ammonium ions and zwitterions. This host can selectively extract carbamylcholine G3 from water, opening the way for the sensing of this acetylcholine agonist. In some cases, a kinetic selectivity is observed for the shorter guests whereas kinetically stable host–guest complexes can be detected under conditions where they are thermodynamically
能够有效识别带有季铵基团的化学物种的人工受体在生物和环境分析领域具有潜在的应用。加工此类受体的可能的仿生策略包括将多芳族腔与极性结合位点紧密结合在一起。在这里,我们表明,bis-calix [6] arene 1表现为可与生物学相关的季铵离子和两性离子结合的异位受体。该宿主可以选择性地提取氨基甲胆碱G3从水中提取,为检测这种乙酰胆碱激动剂开辟了道路。在某些情况下,对较短的客人观察到动力学选择性,而在热力学上不利的条件下,可以检测到动力学稳定的宿主-客体复合物。这些结果可以通过访客进入和进入bis-calix [6] arene 1的独特方式合理化。所有这些结合特性都与相关的基于杯芳烃的受体所报道的那些完全不同。