Polyester-Containing 伪-Cyclodextrin-Based Polyrotaxane: Synthesis by Living Ring-Opening Polymerization, Polypseudorotaxanation, and End Capping Using Nitrile N-Oxide

详细信息    查看全文

• 作者：Hiroyuki Iguchi ; Satoshi Uchida ; Yasuhito Koyama ; Toshikazu Takata
• 刊名：ACS Macro Letters
• 出版年：2013
• 出版时间：June 18, 2013
• 年：2013
• 卷：2
• 期：6
• 页码：527-530
• 全文大小：262K
• 年卷期：v.2,no.6(June 18, 2013)
• ISSN：2161-1653

文摘

The first synthesis of polyrotaxanes consisting of polyester axles and 伪-cyclodextrin (伪-CD) wheels was achieved by the catalyst-free click end-capping reaction of polypseudorotaxanes using nitrile N-oxide. The polypseudorotaxanes contain acrylate-functionalized polyesters that are obtained by the living ring-opening polymerization of lactones. The yield and coverage ratio of polyrotaxanes are highly dependent on the reaction time, molecular weight of the polyester, polyester structure, and solvent used. From the thermal properties of the resulting polyrotaxanes, it was found that coverage with 伪-CDs efficiently suppresses the crystallization of the polyester main chain.