title: Exact helical polymer synthesis by directionally fixed connection of a C2-chiral 9,9'-spirobifluorene unit with a C2- or C(s)-symmetric unit.
abstract: Two types of exact helical polymers, screw-shaped and coil-shaped, consisting of right-angled C2-chiral 9,9'-spirobifluorene skeletons were selectively synthesized based on a two-point-connection protocol by controlling the connecting direction between the monomers.
authors: Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 (H-126), Ookayama, Meguro, Tokyo 152-8552, Japan.
authors: Ryota
authors: R
authors: Seto
authors: Yasuhito
authors: Y
authors: Koyama
authors: Kun
authors: K
authors: Xu
authors: Susumu
authors: S
authors: Kawauchi
authors: Toshikazu
authors: T
authors: Takata