Slidable Organic-Inorganic Hybrid Material based on Polyrotaxanes that have silicone as the backbones
| Project/Area Number |
22750099
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Polymer chemistry
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KATO Kazuaki 東京大学, 大学院・新領域創成科学研究科, 特任助教 (80570069)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | ポリロタキサン / 環動性 / 有機・無機複合材料 / ミセル / 環動ゲル / スライディ ング転移 / エントロピー / 粘弾性緩和 / 有機無機ハイブリッド / シリコーン / ダイナミクス / スライディング転移 / スライディング弾性 / 超分子化学 / 自己組織化 / 有機・無機複合材 |
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| Research Abstract |
To create an innovative organic-inorganic hybrid materials in which the relative position of each component is variable, detailed structural analyses on the precursor polyrotaxane was carried out in solution. As a result, we revealed that the solventphilic cyclic components dispersed on the solventphobic axis polymer to cover thesolventphobic core with the solventphilic rings, like an amphiphilic random copolymer. In addition, we developed a versatile synthesis of polyrotaxane to clarify the effect of the end groups on the micelle formation and to simplify the synthesis. The synthetic breakthrough leaded to the finding of a novel viscoelastic relaxation of slide-ring materials. A systematic measurement of the relaxation on various slide-ring materials with different axis polymers revealed the dynamics of the sliding of partial chains through the cross-links. The observed dynamics corresponds to that of the variation of the relative position of each component of slide-ring materials. Furthermore, the detailed analysis of the equilibrium elasticity provided us a novel concept of the elasticity.
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Report
(4 results)
Research Products
(46 results)
