Synthesis and characterization of fluoro-substituted beta-enaminoketonato titanium complexes and their catalytic behavior of regioselective ethylene/cyclopentadiene copolymerization
文献类型：期刊论文
| 作者 | Li, Yan-guo; Hong, Miao; Zhang, Gui-bao; Li, Yue-sheng |
| 刊名 | CHINESE JOURNAL OF POLYMER SCIENCE
 |
| 出版日期 | 2013-04-01 |
| 卷号 | 31期号:4页码:574-582 |
| 关键词 | Ziegler-natta Polymerization Titanium Catalyst Cyclopentadiene Copolymer |
| ISSN号 | 0256-7679 |
| DOI | 10.1007/s10118-013-1249-0 |
| 英文摘要 | The ethylene/cyclopentadiene (CPD) copolymerization behavior by using fluoro-substituted bis(beta-enaminoketonato) titanium complexes [FC6H4NC(CH3)CHCO(CF3)](2)TiCl2 (1a-1c) has been investigated in detail. Upon utilizing MMAO as a cocatalyst, complexes 1a-1c exhibit high catalytic activities, affording the copolymers with high molecular weight and unimodal molecular weight distribution. Compared with non-substituted complex [C6H5NC(CH3)CHCO(CF3)](2)TiCl2 (1), complexes 1a-1c can produce the copolymers with CPD incorporation adjusted in a wide range due to the enhancement of electrophilicity of metal center caused by introducing electron-withdrawing groups. Especially complex 1c bearing fluorine at the para-position of N-aryl moiety provides the highest CPD incorporation, which is nearly two times (18.5 mol%) higher than the non-substituted complex 1 (8.9 mol%) under the same conditions. The highest CPD incorporation up to 24.6 mol% can be easily achieved using this complex. H-1- and C-13-NMR spectra demonstrate that these fluoro-substituted complexes possess regioselective nature with exclusive 1,2-insertion fashion, and alternating ethylene-CPD sequence can be detected at high CPD incorporation. |
| 语种 | 英语 |
| WOS记录号 | WOS:000316079600004 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/46675]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, Yue-sheng |
| 作者单位 | Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yan-guo,Hong, Miao,Zhang, Gui-bao,et al. Synthesis and characterization of fluoro-substituted beta-enaminoketonato titanium complexes and their catalytic behavior of regioselective ethylene/cyclopentadiene copolymerization[J]. CHINESE JOURNAL OF POLYMER SCIENCE,2013,31(4):574-582. |
| APA | Li, Yan-guo,Hong, Miao,Zhang, Gui-bao,&Li, Yue-sheng.(2013).Synthesis and characterization of fluoro-substituted beta-enaminoketonato titanium complexes and their catalytic behavior of regioselective ethylene/cyclopentadiene copolymerization.CHINESE JOURNAL OF POLYMER SCIENCE,31(4),574-582. |
| MLA | Li, Yan-guo,et al."Synthesis and characterization of fluoro-substituted beta-enaminoketonato titanium complexes and their catalytic behavior of regioselective ethylene/cyclopentadiene copolymerization".CHINESE JOURNAL OF POLYMER SCIENCE 31.4(2013):574-582. |
入库方式： OAI收割
来源：化学研究所
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