Tunable threading/dethreading efficiency of the pseudorotaxane by ether chain length |
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| Authors: | Junbo Li Weidong Zhou Yuliang Li Huibiao Liu Xiaodong Yin Haiyan Zheng Zicheng Zuo |
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| Institution: | a Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
b Graduate School of Chinese Academy of Sciences, Beijing 100190, PR China |
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| Abstract: | A series of axles containing the tetraethyl ester calix4]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. |
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| Keywords: | Molecular machine Pseudorotaxane Cyclobis(paraquat-p-phenylene) Threading/dethreading |
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