期刊
ORGANIC LETTERS
卷 14, 期 7, 页码 1712-1715出版社
AMER CHEMICAL SOC
DOI: 10.1021/ol300284c
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资金
- National Natural Science Foundation of China [20834004, 91027006, 21125417]
- Fundamental Research Funds for the Central Universities [2010QNA3008]
- National Basic Research Program [2009CB930104]
- Zhejiang Provincial Natural Science Foundation of China [R4100009]
We demonstrate that n-octylethyl ammonium hexafluorophosphate (G) can thread through the cavity of 1,4-dimethoxypillar[5]arene to form a [2]pseudorotaxane with a binding constant of 1.09 (+/- 0.31) x 10(3) M-1 in chloroform. The formation of this threaded structure has been confirmed by proton NMR spectroscopy, electrospray ionization mass spectrometry, and X-ray single crystal analysis. The complexation between 1,4-dimiethoxypillar[5]arene and G in chloroform can be switched off by adding Cl. For comparison, the complexation between 1,4-bis(n-propoxy)pillar[5]arene and G has also been investigated.
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