| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5289066 | Tetrahedron Letters | 2006 | 4 Pages |
Abstract
A rotaxane, containing both oligo ethylene glycol and secondary ammonium cation binding sites for a threaded crown ether, has been prepared. 1H NMR spectroscopy has been used to show that the crown ether moiety in the rotaxane undergoes acid-base and alkali metal cation dependent switch from binding at the ammonium cation position to cooperative binding to the metal cation at the oligo ethylene glycol site.
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Authors
Yuji Tokunaga, Tatsuya Nakamura, Megumi Yoshioka, Youji Shimomura,