新規重合触媒の開発と新しい高分子材料の創製
メンバー： 中野幸司
分野： 複合化学、材料化学
所属： 工学研究院
キーワード： 重合触媒、二酸化炭素、環状モノマー、機能性高分子、バインダー
ウェブサイト：
研究概要
メタロセン触媒（Kaminsky触媒）やGrubbs触媒に代表されるように、金属錯体触媒は高分子合成の分野で大きな役割を果たしていて、ポリエチレンなどわれわれの身の回りで利用されているさまざまな高分子材料を提供しています。
われわれの研究グループでは、分子レベルでの緻密な構造・機能の制御が可能であるという金属錯体触媒の利点を活かして、重合機構に立脚した新しい重合触媒の開発とその触媒を利用した新しい高分子材料の創製を目指して研究を行っています。特に、エポキシドと二酸化炭素（CO2）との共重合に着目して研究を行っています。これまでに、高活性・高選択性を持つ触媒の開発や、触媒の新しい回収・再利用プロセスの開発に成功しています。また、得られる脂肪族ポリカルボナートの熱分解温度の制御にも成功しており、バインダー材料としての応用も進めています。
主要論文・参考事項
1."Facile Estimation of Catalytic Activity and Selectivities in Co-polymerization of Propylene Oxide with Carbon Dioxide Medi-ated by Metal Complexes with Planer Tetradentate Ligand"
Ohkawara, T.; Suzuki, K.; Nakano, K.; Mori, S.; Nozaki, K.
J. Am. Chem. Soc. 2014, 136, 10728-10735.
2. "Efficient catalyst removal and recycling in copolymerization of epoxides with carbon dioxide via simple liquid-liquid phase separation"
Nakano, K.; Fujie, R.; Shintani, R.; Nozaki, K.
Chem. Commun. 2013, 49, 9332-9334.
3. "Copolymerization of Epoxides with Carbon Dioxide Catalyzed by Iron-Corrole Complexes: Synthesis of a Crystalline Copolymer"
Nakano, K.; Kobayashi, K.; Ohkawara, H.; Imoto, H.; Nozaki, K.
J. Am. Chem. Soc. 2013, 135, 8456-8459.
4. "Tetravalent Metal Complexes as a New Family of Catalysts for Copolymerization of Epoxides with Carbon Dioxid”
Nakano, K.; Kobayashi, K.; Nozaki, K."
J. Am. Chem. Soc. 2011, 133, 10720−10723.
5. "Stereocomplex of Poly(propylene carbonate): Synthesis of Stereogradient Poly(propylene carbonate) by Regio- and Enantioselective Copolymerization of Propylene Oxide with Carbon Dioxide"
Nakano, K.; Hashimoto, S.; Nakamura, M.; Kamada, T.; Nozaki, K.
Angew. Chem. Int. Ed. 2011, 50, 4868−4871.
お問い合わせ先
東京農工大学・先端産学連携研究推進センター
urac[at]ml.tuat.ac.jp（[at]を@に変換してください）
Development of Novel Polymerization Catalysts and Functional Polymeric Materials
Research members： Dr. Koji Nakano
Research fields： Applied chemistry, Materials chemistry
Departments： Institute of Engineering
Keywords： Polymerization Catalysts, Carbon Dioxide, Cyclic Monomers, Functional Polymeric Material, Binder
Web site：
Summary
Metal complex catalysts, such as metallocene (Kaminsky) catalysts and Grubbs catalysts, have served a crucial role in the field of polymer syntheses and have afforded a variety of polymeric materials which are indispensable in our daily life.
Our group develops novel polymerization catalysts through precise design of metal complexes. In particular, we have investigated the copolymerization of epoxides with carbon dioxide (CO2) and have developed highly-active and/or selective catalysts and the new catalyst recycle process. Our research interest is also directed toward the development of new polymeric materials based on aliphatic polycarbonates prepared by the copolymerization. We have succeeded in the control of thermal degradation temperature of the polycarbonates and currently investigate their application as binders.
Reference articles and patents
1."Facile Estimation of Catalytic Activity and Selectivities in Co-polymerization of Propylene Oxide with Carbon Dioxide Medi-ated by Metal Complexes with Planer Tetradentate Ligand"
Ohkawara, T.; Suzuki, K.; Nakano, K.; Mori, S.; Nozaki, K.
J. Am. Chem. Soc. 2014, 136, 10728-10735.
2. "Efficient catalyst removal and recycling in copolymerization of epoxides with carbon dioxide via simple liquid-liquid phase separation"
Nakano, K.; Fujie, R.; Shintani, R.; Nozaki, K.
Chem. Commun. 2013, 49, 9332-9334.
3. "Copolymerization of Epoxides with Carbon Dioxide Catalyzed by Iron-Corrole Complexes: Synthesis of a Crystalline Copolymer"
Nakano, K.; Kobayashi, K.; Ohkawara, H.; Imoto, H.; Nozaki, K.
J. Am. Chem. Soc. 2013, 135, 8456-8459.
4. "Tetravalent Metal Complexes as a New Family of Catalysts for Copolymerization of Epoxides with Carbon Dioxid”
Nakano, K.; Kobayashi, K.; Nozaki, K."
J. Am. Chem. Soc. 2011, 133, 10720−10723.
5. "Stereocomplex of Poly(propylene carbonate): Synthesis of Stereogradient Poly(propylene carbonate) by Regio- and Enantioselective Copolymerization of Propylene Oxide with Carbon Dioxide"
Nakano, K.; Hashimoto, S.; Nakamura, M.; Kamada, T.; Nozaki, K.
Angew. Chem. Int. Ed. 2011, 50, 4868−4871.
Contact
University Research Administration Center(URAC),
Tokyo University of Agriculture andTechnology
urac[at]ml.tuat.ac.jp
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