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 2001/07
形態種別 学術雑誌
査読 査読あり
標題 Synthesis of Side-Chain Polyrotaxane by Radical Polymerizations of Pseudorotaxane Monomers Consisting of Crown Ether Wheel and Acrylate Axle Bearing Bulky End-Cap and Ammonium Group
執筆形態 共著
掲載誌名 Macromolecules
巻・号・頁 34(16),pp.5449-5456
著者・共著者 Toshikazu Takata, Hiroaki Kawasaki, Nobuhiro Kihara, and Yoshio Furusho
概要 The mixing of an acrylate (I) bearing secondary ammonium salt moiety and terminal di-tert-butylphenyl group with dibenzo-24-crown-8 (DB24C8) afforded the pseudorotaxane monomer (II). The assocn. const. Ka was 18 L mol-1 in CDCl3 at 25 °C. An equimolar mixt. of I and DB24C8 was heated at 60 °Cin the presence of AIBN to give side-chain-type polyrotaxane. The incorporation ratio of the rotaxane unit, which is denoted by R, in the polyrotaxane was 0.42. The effect of the molar ratio [DB24C8]/[I] on the R value was complicated. The R value increased until [DB24C8]/[I] reached 1.0 in benzene, chlorobenzene, and 1,2-dichloroethane. When [DB24C8]/[I] > 1, however, the R value increased gradually as [DB24C8]/[I] increased in polar solvent such as 1,2-dichloroethane, while the R value rather decreased in less polar solvent such as benzene. The copolymn. of II and styrene afforded the corresponding copolymer.
DOI 10.1021/ma0016679
ISSN 0024-9297