作者:Mark R. Sambrook、Paul D. Beer、Michael D. Lankshear、R. Frederick Ludlow、James A. Wisner
DOI:10.1039/b518178j
日期:——
method for rotaxanesynthesis. The anion-templated synthesis of three new [2]rotaxanes containing positively charged pyridinium axles and neutral isophthalamide macrocyclic components is described. The incorporation of electron withdrawing substituents, such as the nitro group, into the 5-position of an isophthalamide bis-vinyl acyclic precursor results in a significant improvement in [2]rotaxane assembly
作者:James A. Wisner、Paul D. Beer、Michael G. B. Drew、Mark R. Sambrook
DOI:10.1021/ja027519a
日期:2002.10.1
of the chloride template. These results were exploited in the construction of a chloride anion-templated [2]rotaxane which, after aniontemplate removal, was studied with regards to its anion recognition properties. Encirclement of the neutral macrocycle around the dumbbell-shaped pyridinium cation in the [2]rotaxane produced a dramatic increase in its selectivity for chloride anions as compared to