The Asymmetry is Derived from Mechanical Interlocking of Achiral Axle and Achiral Ring Components -Syntheses and Properties of Optically Pure [2]Rotaxanes-. - Keiji Hirose; Masaya Ukimi; Shota Ueda; Chie Onoda; Ryohei Kano; Kyosuke Tsuda; Yuko Hinohara; Yoshito Tobe (Symmetry, 2018)