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Binding ability and assembly behavior of β-cyclodextrin complexes with 2,2'-dipyridine and 4,4'-dipyridine

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Binding ability and assembly behavior of β-cyclodextrin complexes with 2,2'-dipyridine and 4,4'-dipyridine

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Title: Binding ability and assembly behavior of β-cyclodextrin complexes with 2,2'-dipyridine and 4,4'-dipyridine
Author: Liu, Yu; Zhao, Yanli; Zhang, Heng Yi; Yang, En Cui; Guan, Xu Dong
Copyright year: 2004
Abstract: Two channel-type supramolecular aggregations 1 and 2 were prepared by the inclusion complex of â-cyclodextrin with 2,2′-dipyridine and 4,4′-dipyridine, respectively, and their binding ability and assembly behavior were investigated comprehensively by X-ray crystallography, 1 H NMR, circular dichroism spectra, and microcalorimetric titration in solution and the solid state. The obtained results revealed that the hydrogen bonds and ð-ð stacking interactions are crucial factors for the formation of the molecular aggregations containing â-cyclodextrin and dipyridines. The disparity of nitrogen atom position in dipyridines leads not only to the distinct crystal system and space group, i.e., monoclinic system (C2) for 1 and triclinic system (P-1) for 2, but also different binding modes and thermodynamical parameters upon complexation of 2,2′-dipyridine and 4,4′-dipyridine with â-cyclodextrin in aqueous solution
Subject: DRNTU::Science::Biological sciences::Biochemistry.
Type: Journal Article
Series/ Journal Title: Journal of organic Chemistry
Rights: © 2004 American Chemical Society.
Version: None of the above

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