Anion-Controlled Ion-Pair Recognition of Paraquat by a Bis(<i>m</i>-phenylene)-32-crown-10 Derivative Heteroditopic Host
作者:Kelong Zhu、Shijun Li、Feng Wang、Feihe Huang
DOI:10.1021/jo802683d
日期:2009.2.6
been demonstrated that the complexation of the divalent salts of paraquat can be greatly improved (a Ka increase up to 219 times was observed) by the introduction of ion-pair recognition through use of urea moieties on the crown ether. This improvement is controlled by not only the solvent polarity but also the nature of the anion. Furthermore, it was found that the binding motif for paraquat guest incorporation