Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 17, Issue 31, Pages S2841-S2846Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/17/31/009
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The sliding modes of cyclic molecules in polyrotaxane and of cross-linking junctions in topological gel or slide-ring gel were investigated by quasi-elastic light scattering. We found that a polyrotaxane sparsely including alpha-cyclodextrin showed the sliding mode in solution other than the self- and cooperative-diffusion modes whereas the sliding mode was not observed in a polyrotaxane densely including alpha-cyclodextrin. After gelation of the sparse polyrotaxane, the self-diffusion mode of the polyrotaxane disappeared but the sliding mode was still observed. This indicated that the figure-of-eight cross-links in the slide-ring gel slid in the polymer network, passing through the polymer chains.
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