Synthesis of functional polysiloxanes using molybdenum-catalyst
| Project/Area Number |
17K05856
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Synthetic chemistry
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| Research Institution | Yokohama National University |
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Principal Investigator |
Minato Makoto 横浜国立大学, 大学院工学研究院, 准教授 (40239306)
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| Co-Investigator(Kenkyū-buntansha) |
周 大揚 大阪大学, 産業科学研究所, 助教 (00324848)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | ポリシロキサン / 触媒的重合 / 機能性材料 / 遷移金属錯体触媒 / 脱水素重合 / モリブデン / 機能性ポリマー / 錯体触媒 / フェロセン / モリブデンーケイ素錯体 / ケイ素ポリマー / 錯体 / 有機金属触媒 |
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| Outline of Final Research Achievements |
Using silyl-molybdenum complexes in conjunction with DMF (Me2NCHO), dihydroorganosilanes (R1R2SiH2) can be converted catalytically to polysiloxanes (-(R1R2SiO)n-). In the reactions, DMF plays a dual role of a solvent and more importantly as the oxygen source. The addition of fluoride compounds (TBAF (( n-C4H9)4NF) or KF) as a cocatalyst has been found to enhance the molecular weight of the resulting polysiloxanes. Since the reactions proceed under mild conditions, a variety of dihydroorganosilanes bearing sensitive functional groups such as amino, methoxycarbonyl, perfluorophenyl, ferrocenylalkyl, and (-)-menthyl groups, were amenable to our protocol. The present one-step procedure is an efficient method for synthesis of functional polysiloxanes that are highly modified.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究で行う重合反応では，錯体触媒を利用することにより，繊細な機能性官能基を有するジヒドロシランモノマーを原料とし，これらの官能基が重合中に影響を受けること無くポリマーが得られるという点が独創的である。しかも従来法が多段階を要するのに対して，わずか一段階で簡便に行えるという利点がある。高い潜在能力を有すると期待されるものの，合成の難しさからこれまであまり利用されてこなかったSi-O結合骨格を有するポリシロキサンを，機能性材料へ展開し，その適用性を解明する点に学術的な特色がある。従来にない高機能の無機高分子の創製が期待される
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Report
(4 results)
Research Products
(18 results)
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[Journal Article] Precise Manipulation of Temperature-Driven Chirality Switching of Molecular Universal Joints through Solvent Mixing2019
Author(s)
Fan, Chunying; Yao, Jiabin; Li, Guojuan; Guo, Cheng; Wu, Wanhua; Su, Dan; Zhong, Zhihui; Zhou, Dayang; Wang, Yuliang; Chruma, Jason J.; Yang, Cheng
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Journal Title
Chemistry - A European Journal
Volume: 25
Pages: 12526-12537
Related Report
Peer Reviewed
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[Journal Article] Temperature-driven braking of γ-cyclodextrin-curcubit[6]uril-cowheeled [4]rotaxanes2019
Author(s)
Liu, Ran; Zhang, Yuxue; Wu, Wanhua; Liang, Wenting; Huang, Qinfei; Yu, Xingke; Xu, Wei; Zhou, Dayang; Selvapalam, Narayanan; Yang, Cheng
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Journal Title
Chinese Chemical Letters
Volume: 30
Pages: 577-581
Related Report
Peer Reviewed
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