Synthesis of Thermoplastic Elastomers by Yttrium-Catalyzed Isospecific <i>Trans</i>-1,4-Polymerization of (<i>E</i>)-1,3-Pentadiene
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- Kei Nishii
- Organometallic Chemistry Laboratory, RIKEN, Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198 , Japan
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- Guangli Zhou
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
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- Yusuke Saito
- Organometallic Chemistry Laboratory, RIKEN, Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198 , Japan
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- Atsushi Yamamoto
- Organometallic Chemistry Laboratory, RIKEN, Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198 , Japan
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- Masayoshi Nishiura
- Organometallic Chemistry Laboratory, RIKEN, Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198 , Japan
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- Yi Luo
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
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- Zhaomin Hou
- Organometallic Chemistry Laboratory, RIKEN, Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198 , Japan
抄録
<jats:title>Abstract</jats:title> <jats:p>Regio- and stereoselectivity control in the polymerization of 1,3-conjugated dienes is of much interest and importance. We report herein for the first time the isospecific trans-1,4-selective living polymerization of (E)-1,3-pentadiene (EPD) by a C5H5-ligated yttrium catalyst (C5H5)Y(CH2C6H4-NMe2-o)2/[Ph3C][B(C6F5)4], which afforded crystalline isotactic-trans-1,4-polypentadiene showing good elastic properties without vulcanization (tensile strength up to 7.1 MPa with elongation at break of 2600%). The DFT calculations revealed that the stereoselectivity was mainly due to steric repulsion between the C5H5 ligand in the catalyst and the methyl group in EPD.</jats:p>
収録刊行物
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- Bulletin of the Chemical Society of Japan
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Bulletin of the Chemical Society of Japan 94 (4), 1285-1291, 2021-02-20
Oxford University Press (OUP)
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詳細情報 詳細情報について
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- CRID
- 1360006529434578304
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- NII論文ID
- 130008037347
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- ISSN
- 13480634
- 00092673
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