Synthesis and self-inclusion of bipyridine-spaced cyclodextrin dimers |
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| Authors: | Nelissen Hubertus F M Feiters Martinus C Nolte Roeland J M |
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| Affiliation: | Department of Organic Chemistry, Nijmegen Science Research Institute of Matter, University of Nijmegen, Toernooiveld 1, 6525 ED Nijmegen, The Netherlands. |
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| Abstract: | The synthesis and conformational behavior of two cyclodextrin dimers containing aromatic bipyridine spacers is presented. The proton NMR spectra of these dimers in aqueous solution show a doubling of signals in the aromatic region due to complete or partial self-inclusion of the spacer. The degree and the strength of self-inclusion is dependent on the substitution pattern of the bipyridine unit. This unexpected difference in the self-inclusion behavior is revealed by 2D NOESY and circular dichroism spectra. |
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