Highly Cis-1,4-Selective Living Polymerization of 1,3-Conjugated Dienes and Copolymerization with E-Caprolactone by Bis(phosphino)carbazolide Rare-Earth-Metal Complexes
文献类型：期刊论文
| 作者 | Wang, Lingfang1; Cui, Dongmei1; Hou, Zhaomin2; Li, Wei3; Li, Yang3 |
| 刊名 | ORGANOMETALLICS
 |
| 出版日期 | 2011-02-28 |
| 卷号 | 30期号:4页码:757-767 |
| ISSN号 | 0276-7333 |
| DOI | 10.1021/om1009395 |
| 英文摘要 | molecular weight (M-n = (10-70) x 10(4)) and narrow polydispersity (PDI = 1.15-1.47).Bis(phosphino)carbazole, HL (HL = 3,6-(tBu)(2)-1,8-(PPh2)(2)-carbazole), reacted with rare-earthmetal tris(aminobenzyl) complexes (Ln(CH2C6H4N(Me)(2)-o)(3)) to afford the first PNP-carbazolide rare-earth-metal bis(alkyl) complexes, LLn(C6H4CH2N(Me)(2))(2) (Ln=Y (1), Sc (2), Er (3)). The yttrium complex 1 was characterized by X-ray diffraction analysis as a solvent-free monomer, in which the carbazolide ligand coordinates to the Y3+ in a kappa P:kappa N:kappa P'-tridentate mode and the two aminobenzyl groups coordinate to the Y3+ ion in eta C-1:kappa N-bidentate modes. Complexes 1-3 combined with [Ph3C][B(C6F5)(4)] gave cationic catalyst systems that initiated cis-1,4-polymerizations of 1,3-conjugated dienes with high activities. Especially, the system 1/[Ph3C][B(C6F5)(4)] displayed excellent cis-1,4-selectivity (> 99%) and living mode at a broad range of polymerization temperatures (0-80 degrees C). Remarkably, the living yttrium polydiene active species could further initiate the ring-opening polymerization of epsilon-caprolactone to give selectively poly(cis-1,4-diene)b-polycaprolactone block copolymer with controllable |
| 语种 | 英语 |
| WOS记录号 | WOS:000287546600014 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/72719]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Cui, Dongmei |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.RIKEN, Adv Sci Inst, Organometall Chem Lab, Wako, Saitama 3510198, Japan 3.Dalian Univ Technol, Coll Chem Engn, Dalian, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Lingfang,Cui, Dongmei,Hou, Zhaomin,et al. Highly Cis-1,4-Selective Living Polymerization of 1,3-Conjugated Dienes and Copolymerization with E-Caprolactone by Bis(phosphino)carbazolide Rare-Earth-Metal Complexes[J]. ORGANOMETALLICS,2011,30(4):757-767. |
| APA | Wang, Lingfang,Cui, Dongmei,Hou, Zhaomin,Li, Wei,&Li, Yang.(2011).Highly Cis-1,4-Selective Living Polymerization of 1,3-Conjugated Dienes and Copolymerization with E-Caprolactone by Bis(phosphino)carbazolide Rare-Earth-Metal Complexes.ORGANOMETALLICS,30(4),757-767. |
| MLA | Wang, Lingfang,et al."Highly Cis-1,4-Selective Living Polymerization of 1,3-Conjugated Dienes and Copolymerization with E-Caprolactone by Bis(phosphino)carbazolide Rare-Earth-Metal Complexes".ORGANOMETALLICS 30.4(2011):757-767. |
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来源：化学研究所
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