我們利用大環分子可以辨識胍鹽(guanidinium)及聯吡啶(bipyridine)衍生物的特性,合成一個具有胍鹽和聯吡啶兩種辨識中心的車輪烷分子,並成功地藉由加入/移除金屬陽離子來加以控制大環分子與胍鹽辨識端間的錯合與解離,進而操作分子開關的移動異構化(translational isomerization)。
Based on the knowledge that a macrocycle is capable of complexing guanidinium and bipyridinium ions, we synthesize a [2]rotaxane incorporating both recognition sites. The translational isomerization of the macrocyclic component between the two stations can be controlled through the addition and removal of metal ions.