A significant impact of host-guest stoichiometry on the extensibility of polyrotaxane gels
Kazuaki Kato1, Yoshinori Okabe1, Yuya Okazumi1
1Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan. kato@molle.k.u-tokyo.ac.jp kohzo@molle.k.u-tokyo.ac.jp.
Abstract:
Modification of the guest polymer ends efficiently and substantially decreases the density of the threaded rings. The minimized ring density drastically facilitates chain sliding through the cross-links in polyrotaxane gels. This molecular design is like regulating the "pressure" of the rings confined in the interlocked architecture, which counteracts the sliding.


