Author/Authors :
Li، نويسنده , , Junbo and Zhou، نويسنده , , Weidong and Li، نويسنده , , Yuliang and Liu، نويسنده , , Huibiao and Ouyang، نويسنده , , Canbin and Yin، نويسنده , , Xiaodong and Zheng، نويسنده , , Haiyan and Zuo، نويسنده , , Zicheng، نويسنده ,
Abstract :
A series of axles containing the tetraethyl ester calix[4]arene derivative unit and 1,5-dioxynaphthalene (DNP) unit, with different lengths of ether chains, have been synthesized. Complexation of the axles and the cyclobis(paraquat-p-phenylene) (CBPQT4+) has been investigated by UV–vis and 1H NMR spectra. The effect of the length of ether chain on the threading/dethreading processes has also been demonstrated, which indicated that the efficiency of threading/dethreading process decreases with the extension of ether chain.
Keywords :
molecular machine , Pseudorotaxane , Threading/dethreading , Cyclobis(paraquat-p-phenylene)
