文件名称：杯芳烃 套娃 chem.200500968.pdf
文件大小：181KB
文件格式：PDF
更新时间：2023-05-13 05:27:43
超分子
杯芳烃形成俄罗斯套娃结构的分子 Diffusion-ordered 1H NMR spectroscopy techniques have been used to determine the binding strength of p-sulfonatocalix[4]arene (SO3[4]) towards a number of charged crown ether species in aqueous conditions. For several (doubly) charged (di)azacrown ethers, all were bound by SO3[4] either well or very well with binding constants between 5.1;102–9.9; 105m1. These results correlate with, and thus explain the phenomenon of rapid capture of azacrown ethers in molecular capsules based on p-sulfonatocalix[ 4]arene and lanthanide metals. Similarly, the formation of “Russian doll” superanions in the solution phase is also elucidated.