Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/91651
Title: Assembly behavior of inclusion complexes of β-cyclodextrin with 4-hydroxyazobenzene and 4-aminoazobenzene
Authors: Liu, Yu
Zhao, Yanli
Chen, Yong
Guo, Dong Sheng
Keywords: DRNTU::Science::Chemistry::Organic chemistry
Issue Date: 2005
Source: 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.
Series/Report no.: Organic and biomolecular chemistry
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.
URI: https://hdl.handle.net/10356/91651
http://hdl.handle.net/10220/6846
ISSN: 1477-0520
Schools: School of Physical and Mathematical Sciences 
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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