Ring-Opening Metathesis Polymerization by a Ru Phosphine Derivative of Cyclodextrin in Water

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• 作者：Yoshinori Takashima ; Kunio Uramatsu ; Daisuke Jomori ; Aiko Harima ; Miyuki Otsubo ; Hiroyasu Yamaguchi ; Akira Harada
• 刊名：ACS Macro Letters
• 出版年：2013
• 出版时间：May 21, 2013
• 年：2013
• 卷：2
• 期：5
• 页码：384-387
• 全文大小：218K
• 年卷期：v.2,no.5(May 21, 2013)
• ISSN：2161-1653

文摘

Trimethylated cyclodextrins with a phosphine ligand and ruthenium (PCy₂Ru-CDs) realize supramolecular polymerization catalysts for ring-opening metathesis polymerization (ROMP). Although PCy₂Ru-尾CD shows a low polymerization activity for 7-oxanorbornene dimethanol (7-ONorOH₂) in organic solvents, it exhibits a high ROMP activity for 7-ONorOH₂ in aqueous solutions. The ROMP activity of PCy₂Ru-尾CD is higher than that of PCy₂Ru-伪CD. The addition of competitive guest molecules decreases the polymer yield, indicating that complexation between PCy₂Ru-CD and 7-ONorOH₂ in water plays an important role in the increased polymer yield.