Two bis(p-phenylene)-34-crown-10-based cryptand constitutional isomers: different binding abilities induced by structural alterations |
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Authors: | Peifa Wei Zhengtao LiBinyuan Xia |
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Institution: | Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China |
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Abstract: | Two novel bis(p-phenylene)-34-crown-10-based cryptand constitutional isomers were prepared and their host–guest complexations with paraquat were studied by ESI-MS, UV–vis spectroscopy, 1H NMR spectra, and X-ray crystal structures. Notably, though the only difference between the two hosts is the location of the nitrogen atom on the third arms, they exhibited quite different binding abilities with paraquat. Competitive complexation was carried out and it may provide a simple way to construct sophisticated supramolecular materials with reversibility and adaptability. |
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Keywords: | Cryptands Macrocycles Constitutional isomers Host&ndash guest system Supramolecular chemistry |
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