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DOI | 10.1126/science.aaw1703 |
Catalyst-controlled stereoselective cationic polymerization of vinyl ethers | |
Teator, A. J.; Leibfarth, F. A. | |
2019-03-29 | |
发表期刊 | SCIENCE
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ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2019 |
卷号 | 363期号:6434页码:1439-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The tacticity of vinyl polymers has a profound effect on their physical properties. Despite the well-developed stereoselective methods for the polymerization of propylene and other nonpolar alpha-olefins, stereoselective polymerization of polar vinyl monomers has proven more challenging. We have designed chiral counterions that systematically bias the reactivity and chain-end stereochemical environment during cationic polymerization. This approach overrides conventional chain-end stereochemical bias to achieve catalyst-controlled stereoselective polymerization. We demonstrate that this method is general to vinyl ether substrates, providing access to a range of isotactic poly(vinyl ether)s with high degrees of isotacticity. The obtained materials display the tensile properties of commercial polyolefins but adhere more strongly to polar substrates by an order of magnitude, indicating their promise for next-generation engineering applications. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000462738000033 |
WOS关键词 | CHIRAL BRONSTED ACID ; COORDINATION-INSERTION COPOLYMERIZATION ; DESIGNED LEWIS-ACIDS ; INITIATING SYSTEMS ; PHOSPHORIC-ACID ; METAL CATALYSTS ; STEREOREGULATION ; RESOLUTION ; SPECTRA ; IMINES |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/201073 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA |
推荐引用方式 GB/T 7714 | Teator, A. J.,Leibfarth, F. A.. Catalyst-controlled stereoselective cationic polymerization of vinyl ethers[J]. SCIENCE,2019,363(6434):1439-+. |
APA | Teator, A. J.,&Leibfarth, F. A..(2019).Catalyst-controlled stereoselective cationic polymerization of vinyl ethers.SCIENCE,363(6434),1439-+. |
MLA | Teator, A. J.,et al."Catalyst-controlled stereoselective cationic polymerization of vinyl ethers".SCIENCE 363.6434(2019):1439-+. |
条目包含的文件 | 条目无相关文件。 |
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