https://scholars.lib.ntu.edu.tw/handle/123456789/623905
標題: | Visible-Light-Induced Living/Controlled Radical Copolymerization of 1-Octene and Acrylic Monomers Mediated by Organocobalt Complexes | 作者: | Wu Z. Wang Z. Wang B.-W. Peng C.-H. CHI-HOW PENG |
公開日期: | 2020 | 卷: | 53 | 期: | 1 | 起(迄)頁: | 212-222 | 來源出版物: | Macromolecules | 摘要: | Compared with homopolymers, the copolymers exhibit improved properties, providing a broad application prospect. Herein, we report the visible-light-induced living/controlled radical copolymerization of acrylates or acrylamides and 1-octene mediated by organocobalt complexes at ambient temperature, giving copolymers with well-predictable molecular weights from 4400 to 27200 and low polydispersities in the range 1.17-1.28. The acrylic monomer reactivity ratio was calculated by monomer conversion and molar fraction of 1-octene without a complex fitting process. The electron-withdrawing groups on acrylic monomers resulted in low reactivity ratio down to 1.1 along with high molar fraction of 1-octene up to 34%, while electron-donating group led to increased reactivity ratio as 43 with a declined molar fraction of 1-octene as 3%. For the first time, a linear relationship between the logarithm of the reactivity ratio and the atomic charge of the propagating radical was observed, which affords a potential quantitative model to evaluate the electronic effect in other copolymerization systems. Copyright ? 2019 American Chemical Society. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85077016066&doi=10.1021%2facs.macromol.9b02066&partnerID=40&md5=ad43e2b901ee13dbc3813dd856fc1e31 https://scholars.lib.ntu.edu.tw/handle/123456789/623905 |
DOI: | 10.1021/acs.macromol.9b02066 | SDG/關鍵字: | Copolymerization;Light;Molar ratio;Electron withdrawing group;Electron-donating group;Monomer reactivity ratios;Organocobalt complexes;Predictable molecular weight;Quantitative modeling;Radical copolymerization;Visible light induced;Acrylic monomers |
顯示於: | 化學系 |
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