Nanoarchitectures constructed from resulting polypseudorotaxanes of the β-cyclodextrin/4,4'-dipyridine inclusion complex with Co2+ and Zn2+ coordination centers

• Main Authors: Zhao, Yanli, Zhang, Heng Yi, Guo, Dong Sheng, Liu, Yu
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2011
• Subjects: DRNTU::Science::Biological sciences::Biochemistry
• Online Access: https://hdl.handle.net/10356/92173; http://hdl.handle.net/10220/7036
• Institution: Nanyang Technological University

Six supramolecular polypseudorotaxanes (2-7) like the missing link have been constructed by coordination of the β-cyclodextrin/4,4'-dipyridine inclusion complex (1) with cobalt chloride, cobalt acetate, cobalt nitrate, zinc chloride, zinc acetate, and zinc nitrate, respectively, and investigated using 1H NMR spectroscopy, circular dichroism, FT-IR, gel permeation chromatography, powder X-ray diffraction, thermogravimetric and differential thermal analysis, transmission electron microscopy, and cyclic voltammetry. The obtained results indicate that polypseudorotaxanes 2-7 could self-assemble to form square or rodlike nanostructures. The counteranions play critical roles in the formation of the polypseudorotaxane nanoarchitectures. Especially polypseudorotaxane 2 shows better electrochemical property as compared with that of other polypseudorotaxanes 3-7, which may potentially be used as an electroactive soft material.