polypseudorotaxane (2D PPRs) (Fig. 9) [74]. 2D PPRs with different contents of CB
[6] presented different condensation abilities with pEGFP-C2 plasmid DNA in the
agarose gel electrophoresis assay. Correspondingly, hexamethylene diamine hydrochloride-modified β-CD monomers have almost no condensation effect on plasmid
DNA. Therefore, the regulation of plasmid DNA condensation ability can be
achieved by adjustment of the CB [6] content, so that an efficient gene vector can
be achieved. Besides, our group reported polypseudorotaxane constructed by tryptophan-modified β-CD and PPG-NH 2 . The polypseudorotaxane not only can be
Fig. 8 Schematic illustration of (a) polypseudorotaxanes by the self-assembly of lactoside-modified α-CDs and polyviologen [71]. (Reprinted (adapted) with permission from Ref. [71]. Copyright
(2004) American Chemical Society.) And (b) fluorescent polypseudorotaxanes based on the
anthryl-modified β-CDs and PPG-NH 2 [73]
Fig. 9 Schematic illustration of the new type of two-dimensional polypseudorotaxane (2D PPRs)
[74]
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