title: A significant impact of host-guest stoichiometry on the extensibility of polyrotaxane gels.
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.
authors.affiliation: Department 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.
authors.forename: Kazuaki
authors.initials: K
authors.lastname: Kato
authors.affiliation: Department 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.
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Okabe
authors.affiliation: Department 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.
authors.forename: Yuya
authors.initials: Y
authors.lastname: Okazumi
authors.affiliation: Department 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.
authors.forename: Kohzo
authors.initials: K
authors.lastname: Ito