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Assembly behavior of inclusion complexes of β-cyclodextrin with 4-hydroxyazobenzene and 4-aminoazobenzene.

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Assembly behavior of inclusion complexes of β-cyclodextrin with 4-hydroxyazobenzene and 4-aminoazobenzene.

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dc.contributor.author Liu, Yu.
dc.contributor.author Zhao, Yanli.
dc.contributor.author Chen, Yong.
dc.contributor.author Guo, Dong Sheng.
dc.date.accessioned 2011-07-05T00:48:11Z
dc.date.available 2011-07-05T00:48:11Z
dc.date.copyright 2005
dc.date.issued 2011-07-05T00:48:11Z
dc.identifier.citation Liu, Y., Zhao, Y. L., Chen, Y., & Guo, D. S. (2005). Assembly behavior of inclusion complexes of β-cyclodextrin with 4-hydroxyazobenzene and 4-aminoazobenzene. Organic and biomolecular chemistry, 3, 584–591.
dc.identifier.issn 1477-0520
dc.identifier.uri http://hdl.handle.net/10220/6846
dc.description.abstract To further reveal the factors governing the supramolecular assembly of β-cyclodextrin (β-CD) inclusion complexes, two aggregates (1 and 2) were prepared from the inclusion complexes of β-CD with 4-hydroxyazobenzene and 4-aminoazobenzene, respectively, and their binding behavior were investigated by means of X-ray analysis, UV-vis, NMR, and circular dichroism spectra in both solution and the solid state. The obtained results indicated that the β-CD/4-hydroxyazobenzene complex 1 could form head-to-head dimers (triclinic system, space group P1) in the solid state, which were further self-assembled to a linear supramolecular architecture by the intra- and interdimer hydrogen bond interactions as well as the intradimer pi-pi interactions. However, when the included guest 4-hydroxyazobenzene was switched to a 4-aminoazobenzene, the resultant β-CD/4-aminoazobenzene complex 2 (monoclinic system, space group P2(1)) could be self-assembled to a wave-type supramolecular aggregate under similar conditions. Furthermore, the combination of crystallographic and spectral investigations jointly revealed the inclusion complexation geometry of β-CD with 4-hydroxyazobenzene and 4-aminoazobenzene in both solution and the solid state, which demonstrated that the disparity of substituents in the azobenzenes played an important role in the inclusion complexation and molecular assembly, affecting not only the structural features of aggregates but also the binding abilities of azobenzenes with β-CD.
dc.format.extent 8 p.
dc.language.iso en
dc.relation.ispartofseries Organic and biomolecular chemistry
dc.subject DRNTU::Science::Chemistry::Organic chemistry.
dc.title Assembly behavior of inclusion complexes of β-cyclodextrin with 4-hydroxyazobenzene and 4-aminoazobenzene.
dc.type Journal Article
dc.contributor.school School of Physical and Mathematical Sciences
dc.description.version Accepted version
dc.identifier.rims 159691

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