キハラ ノブヒロ   Kihara Nobuhiro
  木原 伸浩
   所属   神奈川大学  理学部 化学科
   職種   教授
言語種別 英語
発行・発表の年月 2012/01
形態種別 学術雑誌
査読 査読あり
招待 招待あり
標題 Polymer Architecture Assisted by Dynamic Covalent Bonds: Synthesis and Properties of Boronate-Functionalized Polyrotaxane and Graft Polyrotaxane
執筆形態 共著
掲載誌名 Polym. J.
巻・号・頁 44(1),pp.30-37
著者・共著者 Yasuhito Koyama, Yudai Suzuki, Tomonori Asakawa, Nobuhiro Kihara, Kazuko Nakazono, Toshikazu Takata
概要 Poly[2] rotaxane and graft polyrotaxane were synthesized from a mixture of poly(crown ether) as a trunk polymer, boronic-acid-terminated secondary ammonium salt as an axle component, and diol as an end-capping group by catalyst-free dehydrative bondage between the boronic acid and the diol moieties. Trunk polymers were prepared by copolymerization of diol-or diyne-substituted dibenzo-24-crown-8-ether and ditopic comonomers such as bifunctional acid dichloride and nitrile N-oxide. The use of the sufficiently bulky and stable homoditopic nitrile N-oxide gave the high-molecular-weight isoxazole-containing poly(crown ether) efficiently and without accidental penetration of the propagation end into the crown cavity, which would have caused gelation. The treatment of these poly(crown ether)s with boronic acid gave the corresponding polypseudorotaxanes, and subsequent graft-onto reaction with pinacol and a polymeric terminal diol gave poly[2] rotaxane and graft polyrotaxane.
DOI 10.1038/pj.2011.64
ISSN 0032-3896