可利用酸碱控制的分子器件:准轮烷的“开”与“关”

NMR Spectroscopic Studies of a Novel Molecular Pseudorotaxane Controlled by acid-base

4,4′-二氨基二苯醚衍生物 (A)和缺电子联吡啶大环 (CPQT)发生 π- π堆积作用进行自组装形成准轮烷 ;准轮烷的“开”与“关”可以利用酸碱调控。

A new pseudorotaxanes formed in solution by self\|assembly of a wire\|type electron donor derivate of 4,4′ diaminobiphenyl (A) and electron accepter cyclobis (paraquat\|phenylene) tetracationic cyclophance (CPQT) can be unthreaded and rethreaded by acid\|base.The threading/unthreading processes are accompanied with each other and therefore can be monitored by strong changes in 1H\|NMR chemical shift data of system.