| 第一作者： | Zhu, GQ (Zhu, Guangqian); Wang, L (Wang, Liang); Kuang, J (Kuang, Jia); Xu, GQ (Xu, Guangqiang); Zhang, YQ (Zhang, Yongqiang); Wang, QG (Wang, Qinggang); |
|---|---|
| 联系作者： | Zhu, GQ (Zhu, Guangqian); Wang, L (Wang, Liang); Kuang, J (Kuang, Jia); Xu, GQ (Xu, Guangqiang); Zhang, YQ (Zhang, Yongqiang); Wang, QG (Wang, Qinggang); |
| 发表年度： | 2021 |
| 期： | 13 |
| 卷： | 54 |
| 页： | 6109-6116 |
| 摘要： | The highly selective cationic polymerization of isoprene has been a great challenge over the last 70 years. Here, a synergistic Tf2NH-ionic liquid (IL) catalytic system has been developed to address this issue under mild conditions. Tf2NH serves as a highly efficient catalyst for the cationic polymerization with 0.01 mol % loading, and its counteranion IL serves as a remarkable selectivity-controlled medium delivering low-molecular-weight (M-n < 1500 g/mol) polyisoprenes with excellent yields (up to 99%), double bond content (DBs, up to 99%), and trans-1,4 selectivities (>95%). Mechanistic investigations indicated that an IL cation could effectively suppress the reprotonation of double bonds in polymer chains by reducing the electron density, leading to highly linear desired polymers. The industrial application prospects are illustrated by the IL recycling process, which could be used for more than five rounds with excellent yields and DBs. |
| 刊物名称： | MACROMOLECULES |
| 影响因子： | 5.997 |
| 全文链接： | https://pubs.acs.org/doi/10.1021/acs.macromol.1c00418 |
