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One-Pot Synthesis of Polyethylene-Based Block Copolymers via a Dual Polymerization Pathway
http://hdl.handle.net/2261/0002007593
http://hdl.handle.net/2261/00020075933d348d10-87b2-4a32-8b53-8e85ddaca5c8
| 名前 / ファイル | ライセンス | アクション |
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jacs1c08512.pdf (786 KB)
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© 2021 American Chemical Society
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||
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| 公開日 | 2023-06-20 | |||||||
| タイトル | ||||||||
| タイトル | One-Pot Synthesis of Polyethylene-Based Block Copolymers via a Dual Polymerization Pathway | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||||
| タイプ | journal article | |||||||
| 著者 |
Tang, Shan
× Tang, Shan× Jung, Jin
× Nozaki, Kyoko |
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| 著者所属 | ||||||||
| 言語 | en | |||||||
| 著者所属 | Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo | |||||||
| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | Polyethylene–poly(methyl acrylate) multiblock copolymers were obtained using a catalyst system consisting of a pentamethylcyclopentadienyl cobalt complex (CoIII(η5-C5H5)P(OMe)3I2) and iso-butyl modified methylaluminoxane (MMAO). As the chain-growth mechanism, the self-switching between organometallic-mediated radical polymerization (OMRP) and coordination–insertion polymerization (CIP) is suggested. As a possible polymerization mechanism, we propose that (1) the methyl and iso-butyl groups transfer from Al to Co and the single methyl acrylate (MA) unit insertion into the Me–Co and H–Co allows for the in situ formation of Co–C(COOMe) bonds as an initiator for OMRP of MA, (2) the migratory insertion of ethylene into Co–C(COOMe) bonds leads to the formation of an alkyl-Co species as active species for CIP of ethylene, and (3) MA insertion to the alkyl-Co to regenerate a Co–C(COOMe) bond. The architectures of copolymers were confirmed by various nuclear magnetic resonance (NMR), thermogravimetric analysis (TGA)/differential scanning calorimetry (DSC), and size-exclusion chromatography (SEC) analyses. | |||||||
| 言語 | en | |||||||
| 書誌情報 |
en : Journal of the American Chemical Society 巻 143, 号 45, p. 18832-18837, 発行日 2021-11-05 |
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| ISSN | ||||||||
| 収録物識別子タイプ | PISSN | |||||||
| 収録物識別子 | 00027863 | |||||||
| 権利 | ||||||||
| 権利情報 | This document is the Accepted Manuscript version of a Published Work that appeared in final form in [Journal of the American Chemical Society], copyright [© 2021 American Chemical Society] after peer review and technical editing by the publisher. To access the final edited and published work see [https://doi.org/10.1021/jacs.1c08512]. | |||||||
| 出版者 | ||||||||
| 出版者 | American Chemical Society | |||||||
| 言語 | en | |||||||
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| 関連タイプ | isVersionOf | |||||||
| 識別子タイプ | URI | |||||||
| 関連識別子 | https://doi.org/10.1021/jacs.1c08512 | |||||||
| 出版タイプ | ||||||||
| 出版タイプ | AM | |||||||
